mirror of
https://github.com/openssl/openssl.git
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dbb478a51d
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com> Reviewed-by: Neil Horman <nhorman@openssl.org> (Merged from https://github.com/openssl/openssl/pull/23063)
2502 lines
80 KiB
Plaintext
2502 lines
80 KiB
Plaintext
=pod
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=head1 NAME
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ossl-guide-migration, migration_guide
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- OpenSSL Guide: Migrating from older OpenSSL versions
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=head1 SYNOPSIS
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See the individual manual pages for details.
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=head1 DESCRIPTION
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This guide details the changes required to migrate to new versions of OpenSSL.
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Currently this covers OpenSSL 3.0 & 3.1. For earlier versions refer to
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L<https://github.com/openssl/openssl/blob/master/CHANGES.md>.
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For an overview of some of the key concepts introduced in OpenSSL 3.0 see
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L<crypto(7)>.
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=head1 OPENSSL 3.1
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=head2 Main Changes from OpenSSL 3.0
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The FIPS provider in OpenSSL 3.1 includes some non-FIPS validated algorithms,
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consequently the property query C<fips=yes> is mandatory for applications that
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want to operate in a FIPS approved manner. The algorithms are:
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=over 4
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=item Triple DES ECB
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=item Triple DES CBC
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=item EdDSA
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=back
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There are no other changes requiring additional migration measures since OpenSSL 3.0.
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=head1 OPENSSL 3.0
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=head2 Main Changes from OpenSSL 1.1.1
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=head3 Major Release
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OpenSSL 3.0 is a major release and consequently any application that currently
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uses an older version of OpenSSL will at the very least need to be recompiled in
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order to work with the new version. It is the intention that the large majority
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of applications will work unchanged with OpenSSL 3.0 if those applications
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previously worked with OpenSSL 1.1.1. However this is not guaranteed and some
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changes may be required in some cases. Changes may also be required if
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applications need to take advantage of some of the new features available in
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OpenSSL 3.0 such as the availability of the FIPS module.
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=head3 License Change
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In previous versions, OpenSSL was licensed under the L<dual OpenSSL and SSLeay
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licenses|https://www.openssl.org/source/license-openssl-ssleay.txt>
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(both licenses apply). From OpenSSL 3.0 this is replaced by the
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L<Apache License v2|https://www.openssl.org/source/apache-license-2.0.txt>.
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=head3 Providers and FIPS support
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One of the key changes from OpenSSL 1.1.1 is the introduction of the Provider
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concept. Providers collect together and make available algorithm implementations.
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With OpenSSL 3.0 it is possible to specify, either programmatically or via a
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config file, which providers you want to use for any given application.
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OpenSSL 3.0 comes with 5 different providers as standard. Over time third
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parties may distribute additional providers that can be plugged into OpenSSL.
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All algorithm implementations available via providers are accessed through the
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"high level" APIs (for example those functions prefixed with C<EVP>). They cannot
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be accessed using the L</Low Level APIs>.
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One of the standard providers available is the FIPS provider. This makes
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available FIPS validated cryptographic algorithms.
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The FIPS provider is disabled by default and needs to be enabled explicitly
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at configuration time using the C<enable-fips> option. If it is enabled,
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the FIPS provider gets built and installed in addition to the other standard
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providers. No separate installation procedure is necessary.
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There is however a dedicated C<install_fips> make target, which serves the
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special purpose of installing only the FIPS provider into an existing
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OpenSSL installation.
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Not all algorithms may be available for the application at a particular moment.
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If the application code uses any digest or cipher algorithm via the EVP interface,
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the application should verify the result of the L<EVP_EncryptInit(3)>,
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L<EVP_EncryptInit_ex(3)>, and L<EVP_DigestInit(3)> functions. In case when
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the requested algorithm is not available, these functions will fail.
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See also L</Legacy Algorithms> for information on the legacy provider.
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See also L</Completing the installation of the FIPS Module> and
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L</Using the FIPS Module in applications>.
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=head3 Low Level APIs
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OpenSSL has historically provided two sets of APIs for invoking cryptographic
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algorithms: the "high level" APIs (such as the C<EVP> APIs) and the "low level"
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APIs. The high level APIs are typically designed to work across all algorithm
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types. The "low level" APIs are targeted at a specific algorithm implementation.
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For example, the EVP APIs provide the functions L<EVP_EncryptInit_ex(3)>,
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L<EVP_EncryptUpdate(3)> and L<EVP_EncryptFinal(3)> to perform symmetric
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encryption. Those functions can be used with the algorithms AES, CHACHA, 3DES etc.
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On the other hand, to do AES encryption using the low level APIs you would have
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to call AES specific functions such as L<AES_set_encrypt_key(3)>,
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L<AES_encrypt(3)>, and so on. The functions for 3DES are different.
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Use of the low level APIs has been informally discouraged by the OpenSSL
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development team for a long time. However in OpenSSL 3.0 this is made more
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formal. All such low level APIs have been deprecated. You may still use them in
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your applications, but you may start to see deprecation warnings during
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compilation (dependent on compiler support for this). Deprecated APIs may be
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removed from future versions of OpenSSL so you are strongly encouraged to update
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your code to use the high level APIs instead.
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This is described in more detail in L</Deprecation of Low Level Functions>
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=head3 Legacy Algorithms
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Some cryptographic algorithms such as B<MD2> and B<DES> that were available via
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the EVP APIs are now considered legacy and their use is strongly discouraged.
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These legacy EVP algorithms are still available in OpenSSL 3.0 but not by
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default. If you want to use them then you must load the legacy provider.
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This can be as simple as a config file change, or can be done programmatically.
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See L<OSSL_PROVIDER-legacy(7)> for a complete list of algorithms.
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Applications using the EVP APIs to access these algorithms should instead use
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more modern algorithms. If that is not possible then these applications
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should ensure that the legacy provider has been loaded. This can be achieved
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either programmatically or via configuration. See L<crypto(7)> man page for
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more information about providers.
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=head3 Engines and "METHOD" APIs
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The refactoring to support Providers conflicts internally with the APIs used to
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support engines, including the ENGINE API and any function that creates or
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modifies custom "METHODS" (for example L<EVP_MD_meth_new(3)>,
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L<EVP_CIPHER_meth_new(3)>, L<EVP_PKEY_meth_new(3)>, L<RSA_meth_new(3)>,
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L<EC_KEY_METHOD_new(3)>, etc.). These functions are being deprecated in
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OpenSSL 3.0, and users of these APIs should know that their use can likely
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bypass provider selection and configuration, with unintended consequences.
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This is particularly relevant for applications written to use the OpenSSL 3.0
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FIPS module, as detailed below. Authors and maintainers of external engines are
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strongly encouraged to refactor their code transforming engines into providers
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using the new Provider API and avoiding deprecated methods.
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=head3 Support of legacy engines
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If openssl is not built without engine support or deprecated API support, engines
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will still work. However, their applicability will be limited.
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New algorithms provided via engines will still work.
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Engine-backed keys can be loaded via custom B<OSSL_STORE> implementation.
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In this case the B<EVP_PKEY> objects created via L<ENGINE_load_private_key(3)>
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will be considered legacy and will continue to work.
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To ensure the future compatibility, the engines should be turned to providers.
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To prefer the provider-based hardware offload, you can specify the default
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properties to prefer your provider.
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Setting engine-based or application-based default low-level crypto method such
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as B<RSA_METHOD> or B<EC_KEY_METHOD> is still possible and keys inside the
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default provider will use the engine-based implementation for the crypto
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operations. However B<EVP_PKEY>s created by decoding by using B<OSSL_DECODER>,
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B<PEM_> or B<d2i_> APIs will be provider-based. To create a fully legacy
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B<EVP_PKEY>s L<EVP_PKEY_set1_RSA(3)>, L<EVP_PKEY_set1_EC_KEY(3)> or similar
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functions must be used.
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=head3 Versioning Scheme
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The OpenSSL versioning scheme has changed with the OpenSSL 3.0 release. The new
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versioning scheme has this format:
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MAJOR.MINOR.PATCH
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For OpenSSL 1.1.1 and below, different patch levels were indicated by a letter
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at the end of the release version number. This will no longer be used and
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instead the patch level is indicated by the final number in the version. A
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change in the second (MINOR) number indicates that new features may have been
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added. OpenSSL versions with the same major number are API and ABI compatible.
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If the major number changes then API and ABI compatibility is not guaranteed.
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For more information, see L<OpenSSL_version(3)>.
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=head3 Other major new features
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=head4 Certificate Management Protocol (CMP, RFC 4210)
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This also covers CRMF (RFC 4211) and HTTP transfer (RFC 6712)
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See L<openssl-cmp(1)> and L<OSSL_CMP_exec_certreq(3)> as starting points.
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=head4 HTTP(S) client
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A proper HTTP(S) client that supports GET and POST, redirection, plain and
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ASN.1-encoded contents, proxies, and timeouts.
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=head4 Key Derivation Function API (EVP_KDF)
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This simplifies the process of adding new KDF and PRF implementations.
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Previously KDF algorithms had been shoe-horned into using the EVP_PKEY object
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which was not a logical mapping.
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Existing applications that use KDF algorithms using EVP_PKEY
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(scrypt, TLS1 PRF and HKDF) may be slower as they use an EVP_KDF bridge
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internally.
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All new applications should use the new L<EVP_KDF(3)> interface.
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See also L<OSSL_PROVIDER-default(7)/Key Derivation Function (KDF)> and
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L<OSSL_PROVIDER-FIPS(7)/Key Derivation Function (KDF)>.
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=head4 Message Authentication Code API (EVP_MAC)
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This simplifies the process of adding MAC implementations.
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This includes a generic EVP_PKEY to EVP_MAC bridge, to facilitate the continued
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use of MACs through raw private keys in functionality such as
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L<EVP_DigestSign(3)> and L<EVP_DigestVerify(3)>.
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All new applications should use the new L<EVP_MAC(3)> interface.
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See also L<OSSL_PROVIDER-default(7)/Message Authentication Code (MAC)>
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and L<OSSL_PROVIDER-FIPS(7)/Message Authentication Code (MAC)>.
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=head4 Algorithm Fetching
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Using calls to convenience functions such as EVP_sha256() and EVP_aes_256_gcm() may
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incur a performance penalty when using providers.
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Retrieving algorithms from providers involves searching for an algorithm by name.
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This is much slower than directly accessing a method table.
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It is recommended to prefetch algorithms if an algorithm is used many times.
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See L<crypto(7)/Performance>, L<crypto(7)/Explicit fetching> and L<crypto(7)/Implicit fetching>.
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=head4 Support for Linux Kernel TLS
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In order to use KTLS, support for it must be compiled in using the
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C<enable-ktls> configuration option. It must also be enabled at run time using
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the B<SSL_OP_ENABLE_KTLS> option.
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=head4 New Algorithms
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=over 4
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=item *
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KDF algorithms "SINGLE STEP" and "SSH"
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See L<EVP_KDF-SS(7)> and L<EVP_KDF-SSHKDF(7)>
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=item *
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MAC Algorithms "GMAC" and "KMAC"
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See L<EVP_MAC-GMAC(7)> and L<EVP_MAC-KMAC(7)>.
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=item *
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KEM Algorithm "RSASVE"
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See L<EVP_KEM-RSA(7)>.
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=item *
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Cipher Algorithm "AES-SIV"
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See L<EVP_EncryptInit(3)/SIV Mode>.
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=item *
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AES Key Wrap inverse ciphers supported by EVP layer.
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The inverse ciphers use AES decryption for wrapping, and AES encryption for
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unwrapping. The algorithms are: "AES-128-WRAP-INV", "AES-192-WRAP-INV",
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"AES-256-WRAP-INV", "AES-128-WRAP-PAD-INV", "AES-192-WRAP-PAD-INV" and
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"AES-256-WRAP-PAD-INV".
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=item *
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CTS ciphers added to EVP layer.
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The algorithms are "AES-128-CBC-CTS", "AES-192-CBC-CTS", "AES-256-CBC-CTS",
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"CAMELLIA-128-CBC-CTS", "CAMELLIA-192-CBC-CTS" and "CAMELLIA-256-CBC-CTS".
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CS1, CS2 and CS3 variants are supported.
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=back
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=head4 CMS and PKCS#7 updates
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=over 4
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=item *
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Added CAdES-BES signature verification support.
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=item *
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Added CAdES-BES signature scheme and attributes support (RFC 5126) to CMS API.
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=item *
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Added AuthEnvelopedData content type structure (RFC 5083) using AES_GCM
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This uses the AES-GCM parameter (RFC 5084) for the Cryptographic Message Syntax.
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Its purpose is to support encryption and decryption of a digital envelope that
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is both authenticated and encrypted using AES GCM mode.
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=item *
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L<PKCS7_get_octet_string(3)> and L<PKCS7_type_is_other(3)> were made public.
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=back
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=head4 PKCS#12 API updates
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The default algorithms for pkcs12 creation with the PKCS12_create() function
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were changed to more modern PBKDF2 and AES based algorithms. The default
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MAC iteration count was changed to PKCS12_DEFAULT_ITER to make it equal
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with the password-based encryption iteration count. The default digest
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algorithm for the MAC computation was changed to SHA-256. The pkcs12
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application now supports -legacy option that restores the previous
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default algorithms to support interoperability with legacy systems.
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Added enhanced PKCS#12 APIs which accept a library context B<OSSL_LIB_CTX>
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and (where relevant) a property query. Other APIs which handle PKCS#7 and
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PKCS#8 objects have also been enhanced where required. This includes:
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L<PKCS12_add_key_ex(3)>, L<PKCS12_add_safe_ex(3)>, L<PKCS12_add_safes_ex(3)>,
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L<PKCS12_create_ex(3)>, L<PKCS12_decrypt_skey_ex(3)>, L<PKCS12_init_ex(3)>,
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L<PKCS12_item_decrypt_d2i_ex(3)>, L<PKCS12_item_i2d_encrypt_ex(3)>,
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L<PKCS12_key_gen_asc_ex(3)>, L<PKCS12_key_gen_uni_ex(3)>, L<PKCS12_key_gen_utf8_ex(3)>,
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L<PKCS12_pack_p7encdata_ex(3)>, L<PKCS12_pbe_crypt_ex(3)>, L<PKCS12_PBE_keyivgen_ex(3)>,
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L<PKCS12_SAFEBAG_create_pkcs8_encrypt_ex(3)>, L<PKCS5_pbe2_set_iv_ex(3)>,
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L<PKCS5_pbe_set0_algor_ex(3)>, L<PKCS5_pbe_set_ex(3)>, L<PKCS5_pbkdf2_set_ex(3)>,
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L<PKCS5_v2_PBE_keyivgen_ex(3)>, L<PKCS5_v2_scrypt_keyivgen_ex(3)>,
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L<PKCS8_decrypt_ex(3)>, L<PKCS8_encrypt_ex(3)>, L<PKCS8_set0_pbe_ex(3)>.
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As part of this change the EVP_PBE_xxx APIs can also accept a library
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context and property query and will call an extended version of the key/IV
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derivation function which supports these parameters. This includes
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L<EVP_PBE_CipherInit_ex(3)>, L<EVP_PBE_find_ex(3)> and L<EVP_PBE_scrypt_ex(3)>.
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=head4 PKCS#12 KDF versus FIPS
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Unlike in 1.x.y, the PKCS12KDF algorithm used when a PKCS#12 structure
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is created with a MAC that does not work with the FIPS provider as the PKCS12KDF
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is not a FIPS approvable mechanism.
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See L<EVP_KDF-PKCS12KDF(7)>, L<PKCS12_create(3)>, L<openssl-pkcs12(1)>,
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L<OSSL_PROVIDER-FIPS(7)>.
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=head4 Windows thread synchronization changes
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Windows thread synchronization uses read/write primitives (SRWLock) when
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supported by the OS, otherwise CriticalSection continues to be used.
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=head4 Trace API
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A new generic trace API has been added which provides support for enabling
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instrumentation through trace output. This feature is mainly intended as an aid
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for developers and is disabled by default. To utilize it, OpenSSL needs to be
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configured with the C<enable-trace> option.
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If the tracing API is enabled, the application can activate trace output by
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registering BIOs as trace channels for a number of tracing and debugging
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categories. See L<OSSL_trace_enabled(3)>.
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=head4 Key validation updates
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L<EVP_PKEY_public_check(3)> and L<EVP_PKEY_param_check(3)> now work for
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more key types. This includes RSA, DSA, ED25519, X25519, ED448 and X448.
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Previously (in 1.1.1) they would return -2. For key types that do not have
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parameters then L<EVP_PKEY_param_check(3)> will always return 1.
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=head3 Other notable deprecations and changes
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=head4 The function code part of an OpenSSL error code is no longer relevant
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This code is now always set to zero. Related functions are deprecated.
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=head4 STACK and HASH macros have been cleaned up
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The type-safe wrappers are declared everywhere and implemented once.
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See L<DEFINE_STACK_OF(3)> and L<DEFINE_LHASH_OF_EX(3)>.
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=head4 The RAND_DRBG subsystem has been removed
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The new L<EVP_RAND(3)> is a partial replacement: the DRBG callback framework is
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absent. The RAND_DRBG API did not fit well into the new provider concept as
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implemented by EVP_RAND and EVP_RAND_CTX.
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=head4 Removed FIPS_mode() and FIPS_mode_set()
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These functions are legacy APIs that are not applicable to the new provider
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model. Applications should instead use
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L<EVP_default_properties_is_fips_enabled(3)> and
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L<EVP_default_properties_enable_fips(3)>.
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=head4 Key generation is slower
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The Miller-Rabin test now uses 64 rounds, which is used for all prime generation,
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including RSA key generation. This affects the time for larger keys sizes.
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The default key generation method for the regular 2-prime RSA keys was changed
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to the FIPS186-4 B.3.6 method (Generation of Probable Primes with Conditions
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Based on Auxiliary Probable Primes). This method is slower than the original
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method.
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=head4 Change PBKDF2 to conform to SP800-132 instead of the older PKCS5 RFC2898
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This checks that the salt length is at least 128 bits, the derived key length is
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at least 112 bits, and that the iteration count is at least 1000.
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For backwards compatibility these checks are disabled by default in the
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default provider, but are enabled by default in the FIPS provider.
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To enable or disable the checks see B<OSSL_KDF_PARAM_PKCS5> in
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L<EVP_KDF-PBKDF2(7)>. The parameter can be set using L<EVP_KDF_derive(3)>.
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=head4 Enforce a minimum DH modulus size of 512 bits
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Smaller sizes now result in an error.
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=head4 SM2 key changes
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EC EVP_PKEYs with the SM2 curve have been reworked to automatically become
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EVP_PKEY_SM2 rather than EVP_PKEY_EC.
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Unlike in previous OpenSSL versions, this means that applications cannot
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call C<EVP_PKEY_set_alias_type(pkey, EVP_PKEY_SM2)> to get SM2 computations.
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Parameter and key generation is also reworked to make it possible
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to generate EVP_PKEY_SM2 parameters and keys. Applications must now generate
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SM2 keys directly and must not create an EVP_PKEY_EC key first. It is no longer
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possible to import an SM2 key with domain parameters other than the SM2 elliptic
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curve ones.
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Validation of SM2 keys has been separated from the validation of regular EC
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keys, allowing to improve the SM2 validation process to reject loaded private
|
|
keys that are not conforming to the SM2 ISO standard.
|
|
In particular, a private scalar I<k> outside the range I<< 1 <= k < n-1 >> is
|
|
now correctly rejected.
|
|
|
|
=head4 EVP_PKEY_set_alias_type() method has been removed
|
|
|
|
This function made a B<EVP_PKEY> object mutable after it had been set up. In
|
|
OpenSSL 3.0 it was decided that a provided key should not be able to change its
|
|
type, so this function has been removed.
|
|
|
|
=head4 Functions that return an internal key should be treated as read only
|
|
|
|
Functions such as L<EVP_PKEY_get0_RSA(3)> behave slightly differently in
|
|
OpenSSL 3.0. Previously they returned a pointer to the low-level key used
|
|
internally by libcrypto. From OpenSSL 3.0 this key may now be held in a
|
|
provider. Calling these functions will only return a handle on the internal key
|
|
where the EVP_PKEY was constructed using this key in the first place, for
|
|
example using a function or macro such as L<EVP_PKEY_assign_RSA(3)>,
|
|
L<EVP_PKEY_set1_RSA(3)>, etc.
|
|
Where the EVP_PKEY holds a provider managed key, then these functions now return
|
|
a cached copy of the key. Changes to the internal provider key that take place
|
|
after the first time the cached key is accessed will not be reflected back in
|
|
the cached copy. Similarly any changes made to the cached copy by application
|
|
code will not be reflected back in the internal provider key.
|
|
|
|
For the above reasons the keys returned from these functions should typically be
|
|
treated as read-only. To emphasise this the value returned from
|
|
L<EVP_PKEY_get0_RSA(3)>, L<EVP_PKEY_get0_DSA(3)>, L<EVP_PKEY_get0_EC_KEY(3)> and
|
|
L<EVP_PKEY_get0_DH(3)> have been made const. This may break some existing code.
|
|
Applications broken by this change should be modified. The preferred solution is
|
|
to refactor the code to avoid the use of these deprecated functions. Failing
|
|
this the code should be modified to use a const pointer instead.
|
|
The L<EVP_PKEY_get1_RSA(3)>, L<EVP_PKEY_get1_DSA(3)>, L<EVP_PKEY_get1_EC_KEY(3)>
|
|
and L<EVP_PKEY_get1_DH(3)> functions continue to return a non-const pointer to
|
|
enable them to be "freed". However they should also be treated as read-only.
|
|
|
|
=head4 The public key check has moved from EVP_PKEY_derive() to EVP_PKEY_derive_set_peer()
|
|
|
|
This may mean result in an error in L<EVP_PKEY_derive_set_peer(3)> rather than
|
|
during L<EVP_PKEY_derive(3)>.
|
|
To disable this check use EVP_PKEY_derive_set_peer_ex(dh, peer, 0).
|
|
|
|
=head4 The print format has cosmetic changes for some functions
|
|
|
|
The output from numerous "printing" functions such as L<X509_signature_print(3)>,
|
|
L<X509_print_ex(3)>, L<X509_CRL_print_ex(3)>, and other similar functions has been
|
|
amended such that there may be cosmetic differences between the output
|
|
observed in 1.1.1 and 3.0. This also applies to the B<-text> output from the
|
|
B<openssl x509> and B<openssl crl> applications.
|
|
|
|
=head4 Interactive mode from the B<openssl> program has been removed
|
|
|
|
From now on, running it without arguments is equivalent to B<openssl help>.
|
|
|
|
=head4 The error return values from some control calls (ctrl) have changed
|
|
|
|
One significant change is that controls which used to return -2 for
|
|
invalid inputs, now return -1 indicating a generic error condition instead.
|
|
|
|
=head4 DH and DHX key types have different settable parameters
|
|
|
|
Previously (in 1.1.1) these conflicting parameters were allowed, but will now
|
|
result in errors. See L<EVP_PKEY-DH(7)> for further details. This affects the
|
|
behaviour of L<openssl-genpkey(1)> for DH parameter generation.
|
|
|
|
=head4 EVP_CIPHER_CTX_set_flags() ordering change
|
|
|
|
If using a cipher from a provider the B<EVP_CIPH_FLAG_LENGTH_BITS> flag can only
|
|
be set B<after> the cipher has been assigned to the cipher context.
|
|
See L<EVP_EncryptInit(3)/FLAGS> for more information.
|
|
|
|
=head4 Validation of operation context parameters
|
|
|
|
Due to move of the implementation of cryptographic operations to the
|
|
providers, validation of various operation parameters can be postponed until
|
|
the actual operation is executed where previously it happened immediately
|
|
when an operation parameter was set.
|
|
|
|
For example when setting an unsupported curve with
|
|
EVP_PKEY_CTX_set_ec_paramgen_curve_nid() this function call will not fail
|
|
but later keygen operations with the EVP_PKEY_CTX will fail.
|
|
|
|
=head4 Removal of function code from the error codes
|
|
|
|
The function code part of the error code is now always set to 0. For that
|
|
reason the ERR_GET_FUNC() macro was removed. Applications must resolve
|
|
the error codes only using the library number and the reason code.
|
|
|
|
=head4 ChaCha20-Poly1305 cipher does not allow a truncated IV length to be used
|
|
|
|
In OpenSSL 3.0 setting the IV length to any value other than 12 will result in an
|
|
error.
|
|
Prior to OpenSSL 3.0 the ivlen could be smaller that the required 12 byte length,
|
|
using EVP_CIPHER_CTX_ctrl(ctx, EVP_CRTL_AEAD_SET_IVLEN, ivlen, NULL). This resulted
|
|
in an IV that had leading zero padding.
|
|
|
|
=head2 Installation and Compilation
|
|
|
|
Please refer to the INSTALL.md file in the top of the distribution for
|
|
instructions on how to build and install OpenSSL 3.0. Please also refer to the
|
|
various platform specific NOTES files for your specific platform.
|
|
|
|
=head2 Upgrading from OpenSSL 1.1.1
|
|
|
|
Upgrading to OpenSSL 3.0 from OpenSSL 1.1.1 should be relatively straight
|
|
forward in most cases. The most likely area where you will encounter problems
|
|
is if you have used low level APIs in your code (as discussed above). In that
|
|
case you are likely to start seeing deprecation warnings when compiling your
|
|
application. If this happens you have 3 options:
|
|
|
|
=over 4
|
|
|
|
=item 1.
|
|
|
|
Ignore the warnings. They are just warnings. The deprecated functions are still present and you may still use them. However be aware that they may be removed from a future version of OpenSSL.
|
|
|
|
=item 2.
|
|
|
|
Suppress the warnings. Refer to your compiler documentation on how to do this.
|
|
|
|
=item 3.
|
|
|
|
Remove your usage of the low level APIs. In this case you will need to rewrite your code to use the high level APIs instead
|
|
|
|
=back
|
|
|
|
=head3 Error code changes
|
|
|
|
As OpenSSL 3.0 provides a brand new Encoder/Decoder mechanism for working with
|
|
widely used file formats, application code that checks for particular error
|
|
reason codes on key loading failures might need an update.
|
|
|
|
Password-protected keys may deserve special attention. If only some errors
|
|
are treated as an indicator that the user should be asked about the password again,
|
|
it's worth testing these scenarios and processing the newly relevant codes.
|
|
|
|
There may be more cases to treat specially, depending on the calling application code.
|
|
|
|
=head2 Upgrading from OpenSSL 1.0.2
|
|
|
|
Upgrading to OpenSSL 3.0 from OpenSSL 1.0.2 is likely to be significantly more
|
|
difficult. In addition to the issues discussed above in the section about
|
|
L</Upgrading from OpenSSL 1.1.1>, the main things to be aware of are:
|
|
|
|
=over 4
|
|
|
|
=item 1.
|
|
|
|
The build and installation procedure has changed significantly.
|
|
|
|
Check the file INSTALL.md in the top of the installation for instructions on how
|
|
to build and install OpenSSL for your platform. Also read the various NOTES
|
|
files in the same directory, as applicable for your platform.
|
|
|
|
=item 2.
|
|
|
|
Many structures have been made opaque in OpenSSL 3.0.
|
|
|
|
The structure definitions have been removed from the public header files and
|
|
moved to internal header files. In practice this means that you can no longer
|
|
stack allocate some structures. Instead they must be heap allocated through some
|
|
function call (typically those function names have a C<_new> suffix to them).
|
|
Additionally you must use "setter" or "getter" functions to access the fields
|
|
within those structures.
|
|
|
|
For example code that previously looked like this:
|
|
|
|
EVP_MD_CTX md_ctx;
|
|
|
|
/* This line will now generate compiler errors */
|
|
EVP_MD_CTX_init(&md_ctx);
|
|
|
|
The code needs to be amended to look like this:
|
|
|
|
EVP_MD_CTX *md_ctx;
|
|
|
|
md_ctx = EVP_MD_CTX_new();
|
|
...
|
|
...
|
|
EVP_MD_CTX_free(md_ctx);
|
|
|
|
=item 3.
|
|
|
|
Support for TLSv1.3 has been added.
|
|
|
|
This has a number of implications for SSL/TLS applications. See the
|
|
L<TLS1.3 page|https://wiki.openssl.org/index.php/TLS1.3> for further details.
|
|
|
|
=back
|
|
|
|
More details about the breaking changes between OpenSSL versions 1.0.2 and 1.1.0
|
|
can be found on the
|
|
L<OpenSSL 1.1.0 Changes page|https://wiki.openssl.org/index.php/OpenSSL_1.1.0_Changes>.
|
|
|
|
=head3 Upgrading from the OpenSSL 2.0 FIPS Object Module
|
|
|
|
The OpenSSL 2.0 FIPS Object Module was a separate download that had to be built
|
|
separately and then integrated into your main OpenSSL 1.0.2 build.
|
|
In OpenSSL 3.0 the FIPS support is fully integrated into the mainline version of
|
|
OpenSSL and is no longer a separate download. For further information see
|
|
L</Completing the installation of the FIPS Module>.
|
|
|
|
The function calls FIPS_mode() and FIPS_mode_set() have been removed
|
|
from OpenSSL 3.0. You should rewrite your application to not use them.
|
|
See L<fips_module(7)> and L<OSSL_PROVIDER-FIPS(7)> for details.
|
|
|
|
=head2 Completing the installation of the FIPS Module
|
|
|
|
The FIPS Module will be built and installed automatically if FIPS support has
|
|
been configured. The current documentation can be found in the
|
|
L<README-FIPS|https://github.com/openssl/openssl/blob/master/README-FIPS.md> file.
|
|
|
|
=head2 Programming
|
|
|
|
Applications written to work with OpenSSL 1.1.1 will mostly just work with
|
|
OpenSSL 3.0. However changes will be required if you want to take advantage of
|
|
some of the new features that OpenSSL 3.0 makes available. In order to do that
|
|
you need to understand some new concepts introduced in OpenSSL 3.0.
|
|
Read L<crypto(7)/Library contexts> for further information.
|
|
|
|
=head3 Library Context
|
|
|
|
A library context allows different components of a complex application to each
|
|
use a different library context and have different providers loaded with
|
|
different configuration settings.
|
|
See L<crypto(7)/Library contexts> for further info.
|
|
|
|
If the user creates an B<OSSL_LIB_CTX> via L<OSSL_LIB_CTX_new(3)> then many
|
|
functions may need to be changed to pass additional parameters to handle the
|
|
library context.
|
|
|
|
=head4 Using a Library Context - Old functions that should be changed
|
|
|
|
If a library context is needed then all EVP_* digest functions that return a
|
|
B<const EVP_MD *> such as EVP_sha256() should be replaced with a call to
|
|
L<EVP_MD_fetch(3)>. See L<crypto(7)/ALGORITHM FETCHING>.
|
|
|
|
If a library context is needed then all EVP_* cipher functions that return a
|
|
B<const EVP_CIPHER *> such as EVP_aes_128_cbc() should be replaced vith a call to
|
|
L<EVP_CIPHER_fetch(3)>. See L<crypto(7)/ALGORITHM FETCHING>.
|
|
|
|
Some functions can be passed an object that has already been set up with a library
|
|
context such as L<d2i_X509(3)>, L<d2i_X509_CRL(3)>, L<d2i_X509_REQ(3)> and
|
|
L<d2i_X509_PUBKEY(3)>. If NULL is passed instead then the created object will be
|
|
set up with the default library context. Use L<X509_new_ex(3)>,
|
|
L<X509_CRL_new_ex(3)>, L<X509_REQ_new_ex(3)> and L<X509_PUBKEY_new_ex(3)> if a
|
|
library context is required.
|
|
|
|
All functions listed below with a I<NAME> have a replacement function I<NAME_ex>
|
|
that takes B<OSSL_LIB_CTX> as an additional argument. Functions that have other
|
|
mappings are listed along with the respective name.
|
|
|
|
=over 4
|
|
|
|
=item *
|
|
|
|
L<ASN1_item_new(3)>, L<ASN1_item_d2i(3)>, L<ASN1_item_d2i_fp(3)>,
|
|
L<ASN1_item_d2i_bio(3)>, L<ASN1_item_sign(3)> and L<ASN1_item_verify(3)>
|
|
|
|
=item *
|
|
|
|
L<BIO_new(3)>
|
|
|
|
=item *
|
|
|
|
b2i_RSA_PVK_bio() and i2b_PVK_bio()
|
|
|
|
=item *
|
|
|
|
L<BN_CTX_new(3)> and L<BN_CTX_secure_new(3)>
|
|
|
|
=item *
|
|
|
|
L<CMS_AuthEnvelopedData_create(3)>, L<CMS_ContentInfo_new(3)>, L<CMS_data_create(3)>,
|
|
L<CMS_digest_create(3)>, L<CMS_EncryptedData_encrypt(3)>, L<CMS_encrypt(3)>,
|
|
L<CMS_EnvelopedData_create(3)>, L<CMS_ReceiptRequest_create0(3)> and L<CMS_sign(3)>
|
|
|
|
=item *
|
|
|
|
L<CONF_modules_load_file(3)>
|
|
|
|
=item *
|
|
|
|
L<CTLOG_new(3)>, L<CTLOG_new_from_base64(3)> and L<CTLOG_STORE_new(3)>
|
|
|
|
=item *
|
|
|
|
L<CT_POLICY_EVAL_CTX_new(3)>
|
|
|
|
=item *
|
|
|
|
L<d2i_AutoPrivateKey(3)>, L<d2i_PrivateKey(3)> and L<d2i_PUBKEY(3)>
|
|
|
|
=item *
|
|
|
|
L<d2i_PrivateKey_bio(3)> and L<d2i_PrivateKey_fp(3)>
|
|
|
|
Use L<d2i_PrivateKey_ex_bio(3)> and L<d2i_PrivateKey_ex_fp(3)>
|
|
|
|
=item *
|
|
|
|
L<EC_GROUP_new(3)>
|
|
|
|
Use L<EC_GROUP_new_by_curve_name_ex(3)> or L<EC_GROUP_new_from_params(3)>.
|
|
|
|
=item *
|
|
|
|
L<EVP_DigestSignInit(3)> and L<EVP_DigestVerifyInit(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_PBE_CipherInit(3)>, L<EVP_PBE_find(3)> and L<EVP_PBE_scrypt(3)>
|
|
|
|
=item *
|
|
|
|
L<PKCS5_PBE_keyivgen(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_PKCS82PKEY(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_PKEY_CTX_new_id(3)>
|
|
|
|
Use L<EVP_PKEY_CTX_new_from_name(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_PKEY_derive_set_peer(3)>, L<EVP_PKEY_new_raw_private_key(3)>
|
|
and L<EVP_PKEY_new_raw_public_key(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_SignFinal(3)> and L<EVP_VerifyFinal(3)>
|
|
|
|
=item *
|
|
|
|
L<NCONF_new(3)>
|
|
|
|
=item *
|
|
|
|
L<OCSP_RESPID_match(3)> and L<OCSP_RESPID_set_by_key(3)>
|
|
|
|
=item *
|
|
|
|
L<OPENSSL_thread_stop(3)>
|
|
|
|
=item *
|
|
|
|
L<OSSL_STORE_open(3)>
|
|
|
|
=item *
|
|
|
|
L<PEM_read_bio_Parameters(3)>, L<PEM_read_bio_PrivateKey(3)>, L<PEM_read_bio_PUBKEY(3)>,
|
|
L<PEM_read_PrivateKey(3)> and L<PEM_read_PUBKEY(3)>
|
|
|
|
=item *
|
|
|
|
L<PEM_write_bio_PrivateKey(3)>, L<PEM_write_bio_PUBKEY(3)>, L<PEM_write_PrivateKey(3)>
|
|
and L<PEM_write_PUBKEY(3)>
|
|
|
|
=item *
|
|
|
|
L<PEM_X509_INFO_read_bio(3)> and L<PEM_X509_INFO_read(3)>
|
|
|
|
=item *
|
|
|
|
L<PKCS12_add_key(3)>, L<PKCS12_add_safe(3)>, L<PKCS12_add_safes(3)>,
|
|
L<PKCS12_create(3)>, L<PKCS12_decrypt_skey(3)>, L<PKCS12_init(3)>, L<PKCS12_item_decrypt_d2i(3)>,
|
|
L<PKCS12_item_i2d_encrypt(3)>, L<PKCS12_key_gen_asc(3)>, L<PKCS12_key_gen_uni(3)>,
|
|
L<PKCS12_key_gen_utf8(3)>, L<PKCS12_pack_p7encdata(3)>, L<PKCS12_pbe_crypt(3)>,
|
|
L<PKCS12_PBE_keyivgen(3)>, L<PKCS12_SAFEBAG_create_pkcs8_encrypt(3)>
|
|
|
|
=item *
|
|
|
|
L<PKCS5_pbe_set0_algor(3)>, L<PKCS5_pbe_set(3)>, L<PKCS5_pbe2_set_iv(3)>,
|
|
L<PKCS5_pbkdf2_set(3)> and L<PKCS5_v2_scrypt_keyivgen(3)>
|
|
|
|
=item *
|
|
|
|
L<PKCS7_encrypt(3)>, L<PKCS7_new(3)> and L<PKCS7_sign(3)>
|
|
|
|
=item *
|
|
|
|
L<PKCS8_decrypt(3)>, L<PKCS8_encrypt(3)> and L<PKCS8_set0_pbe(3)>
|
|
|
|
=item *
|
|
|
|
L<RAND_bytes(3)> and L<RAND_priv_bytes(3)>
|
|
|
|
=item *
|
|
|
|
L<SMIME_write_ASN1(3)>
|
|
|
|
=item *
|
|
|
|
L<SSL_load_client_CA_file(3)>
|
|
|
|
=item *
|
|
|
|
L<SSL_CTX_new(3)>
|
|
|
|
=item *
|
|
|
|
L<TS_RESP_CTX_new(3)>
|
|
|
|
=item *
|
|
|
|
L<X509_CRL_new(3)>
|
|
|
|
=item *
|
|
|
|
L<X509_load_cert_crl_file(3)> and L<X509_load_cert_file(3)>
|
|
|
|
=item *
|
|
|
|
L<X509_LOOKUP_by_subject(3)> and L<X509_LOOKUP_ctrl(3)>
|
|
|
|
=item *
|
|
|
|
L<X509_NAME_hash(3)>
|
|
|
|
=item *
|
|
|
|
L<X509_new(3)>
|
|
|
|
=item *
|
|
|
|
L<X509_REQ_new(3)> and L<X509_REQ_verify(3)>
|
|
|
|
=item *
|
|
|
|
L<X509_STORE_CTX_new(3)>, L<X509_STORE_set_default_paths(3)>, L<X509_STORE_load_file(3)>,
|
|
L<X509_STORE_load_locations(3)> and L<X509_STORE_load_store(3)>
|
|
|
|
=back
|
|
|
|
=head4 New functions that use a Library context
|
|
|
|
The following functions can be passed a library context if required.
|
|
Passing NULL will use the default library context.
|
|
|
|
=over 4
|
|
|
|
=item *
|
|
|
|
L<BIO_new_from_core_bio(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_ASYM_CIPHER_fetch(3)> and L<EVP_ASYM_CIPHER_do_all_provided(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_CIPHER_fetch(3)> and L<EVP_CIPHER_do_all_provided(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_default_properties_enable_fips(3)> and
|
|
L<EVP_default_properties_is_fips_enabled(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_KDF_fetch(3)> and L<EVP_KDF_do_all_provided(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_KEM_fetch(3)> and L<EVP_KEM_do_all_provided(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_KEYEXCH_fetch(3)> and L<EVP_KEYEXCH_do_all_provided(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_KEYMGMT_fetch(3)> and L<EVP_KEYMGMT_do_all_provided(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_MAC_fetch(3)> and L<EVP_MAC_do_all_provided(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_MD_fetch(3)> and L<EVP_MD_do_all_provided(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_PKEY_CTX_new_from_pkey(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_PKEY_Q_keygen(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_Q_mac(3)> and L<EVP_Q_digest(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_RAND(3)> and L<EVP_RAND_do_all_provided(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_set_default_properties(3)>
|
|
|
|
=item *
|
|
|
|
L<EVP_SIGNATURE_fetch(3)> and L<EVP_SIGNATURE_do_all_provided(3)>
|
|
|
|
=item *
|
|
|
|
L<OSSL_CMP_CTX_new(3)> and L<OSSL_CMP_SRV_CTX_new(3)>
|
|
|
|
=item *
|
|
|
|
L<OSSL_CRMF_ENCRYPTEDVALUE_get1_encCert(3)>
|
|
|
|
=item *
|
|
|
|
L<OSSL_CRMF_MSG_create_popo(3)> and L<OSSL_CRMF_MSGS_verify_popo(3)>
|
|
|
|
=item *
|
|
|
|
L<OSSL_CRMF_pbm_new(3)> and L<OSSL_CRMF_pbmp_new(3)>
|
|
|
|
=item *
|
|
|
|
L<OSSL_DECODER_CTX_add_extra(3)> and L<OSSL_DECODER_CTX_new_for_pkey(3)>
|
|
|
|
=item *
|
|
|
|
L<OSSL_DECODER_fetch(3)> and L<OSSL_DECODER_do_all_provided(3)>
|
|
|
|
=item *
|
|
|
|
L<OSSL_ENCODER_CTX_add_extra(3)>
|
|
|
|
=item *
|
|
|
|
L<OSSL_ENCODER_fetch(3)> and L<OSSL_ENCODER_do_all_provided(3)>
|
|
|
|
=item *
|
|
|
|
L<OSSL_LIB_CTX_free(3)>, L<OSSL_LIB_CTX_load_config(3)> and L<OSSL_LIB_CTX_set0_default(3)>
|
|
|
|
=item *
|
|
|
|
L<OSSL_PROVIDER_add_builtin(3)>, L<OSSL_PROVIDER_available(3)>,
|
|
L<OSSL_PROVIDER_do_all(3)>, L<OSSL_PROVIDER_load(3)>,
|
|
L<OSSL_PROVIDER_set_default_search_path(3)> and L<OSSL_PROVIDER_try_load(3)>
|
|
|
|
=item *
|
|
|
|
L<OSSL_SELF_TEST_get_callback(3)> and L<OSSL_SELF_TEST_set_callback(3)>
|
|
|
|
=item *
|
|
|
|
L<OSSL_STORE_attach(3)>
|
|
|
|
=item *
|
|
|
|
L<OSSL_STORE_LOADER_fetch(3)> and L<OSSL_STORE_LOADER_do_all_provided(3)>
|
|
|
|
=item *
|
|
|
|
L<RAND_get0_primary(3)>, L<RAND_get0_private(3)>, L<RAND_get0_public(3)>,
|
|
L<RAND_set_DRBG_type(3)> and L<RAND_set_seed_source_type(3)>
|
|
|
|
=back
|
|
|
|
=head3 Providers
|
|
|
|
Providers are described in detail here L<crypto(7)/Providers>.
|
|
See also L<crypto(7)/OPENSSL PROVIDERS>.
|
|
|
|
=head3 Fetching algorithms and property queries
|
|
|
|
Implicit and Explicit Fetching is described in detail here
|
|
L<crypto(7)/ALGORITHM FETCHING>.
|
|
|
|
=head3 Mapping EVP controls and flags to provider L<OSSL_PARAM(3)> parameters
|
|
|
|
The existing functions for controls (such as L<EVP_CIPHER_CTX_ctrl(3)>) and
|
|
manipulating flags (such as L<EVP_MD_CTX_set_flags(3)>)internally use
|
|
B<OSSL_PARAMS> to pass information to/from provider objects.
|
|
See L<OSSL_PARAM(3)> for additional information related to parameters.
|
|
|
|
For ciphers see L<EVP_EncryptInit(3)/CONTROLS>, L<EVP_EncryptInit(3)/FLAGS> and
|
|
L<EVP_EncryptInit(3)/PARAMETERS>.
|
|
|
|
For digests see L<EVP_DigestInit(3)/CONTROLS>, L<EVP_DigestInit(3)/FLAGS> and
|
|
L<EVP_DigestInit(3)/PARAMETERS>.
|
|
|
|
=head3 Deprecation of Low Level Functions
|
|
|
|
A significant number of APIs have been deprecated in OpenSSL 3.0.
|
|
This section describes some common categories of deprecations.
|
|
See L</Deprecated function mappings> for the list of deprecated functions
|
|
that refer to these categories.
|
|
|
|
=head4 Providers are a replacement for engines and low-level method overrides
|
|
|
|
Any accessor that uses an ENGINE is deprecated (such as EVP_PKEY_set1_engine()).
|
|
Applications using engines should instead use providers.
|
|
|
|
Before providers were added algorithms were overridden by changing the methods
|
|
used by algorithms. All these methods such as RSA_new_method() and RSA_meth_new()
|
|
are now deprecated and can be replaced by using providers instead.
|
|
|
|
=head4 Deprecated i2d and d2i functions for low-level key types
|
|
|
|
Any i2d and d2i functions such as d2i_DHparams() that take a low-level key type
|
|
have been deprecated. Applications should instead use the L<OSSL_DECODER(3)> and
|
|
L<OSSL_ENCODER(3)> APIs to read and write files.
|
|
See L<d2i_RSAPrivateKey(3)/Migration> for further details.
|
|
|
|
=head4 Deprecated low-level key object getters and setters
|
|
|
|
Applications that set or get low-level key objects (such as EVP_PKEY_set1_DH()
|
|
or EVP_PKEY_get0()) should instead use the OSSL_ENCODER
|
|
(See L<OSSL_ENCODER_to_bio(3)>) or OSSL_DECODER (See L<OSSL_DECODER_from_bio(3)>)
|
|
APIs, or alternatively use L<EVP_PKEY_fromdata(3)> or L<EVP_PKEY_todata(3)>.
|
|
|
|
=head4 Deprecated low-level key parameter getters
|
|
|
|
Functions that access low-level objects directly such as L<RSA_get0_n(3)> are now
|
|
deprecated. Applications should use one of L<EVP_PKEY_get_bn_param(3)>,
|
|
L<EVP_PKEY_get_int_param(3)>, l<EVP_PKEY_get_size_t_param(3)>,
|
|
L<EVP_PKEY_get_utf8_string_param(3)>, L<EVP_PKEY_get_octet_string_param(3)> or
|
|
L<EVP_PKEY_get_params(3)> to access fields from an EVP_PKEY.
|
|
Gettable parameters are listed in L<EVP_PKEY-RSA(7)/Common RSA parameters>,
|
|
L<EVP_PKEY-DH(7)/DH parameters>, L<EVP_PKEY-DSA(7)/DSA parameters>,
|
|
L<EVP_PKEY-FFC(7)/FFC parameters>, L<EVP_PKEY-EC(7)/Common EC parameters> and
|
|
L<EVP_PKEY-X25519(7)/Common X25519, X448, ED25519 and ED448 parameters>.
|
|
Applications may also use L<EVP_PKEY_todata(3)> to return all fields.
|
|
|
|
=head4 Deprecated low-level key parameter setters
|
|
|
|
Functions that access low-level objects directly such as L<RSA_set0_crt_params(3)>
|
|
are now deprecated. Applications should use L<EVP_PKEY_fromdata(3)> to create
|
|
new keys from user provided key data. Keys should be immutable once they are
|
|
created, so if required the user may use L<EVP_PKEY_todata(3)>, L<OSSL_PARAM_merge(3)>,
|
|
and L<EVP_PKEY_fromdata(3)> to create a modified key.
|
|
See L<EVP_PKEY-DH(7)/Examples> for more information.
|
|
See L</Deprecated low-level key generation functions> for information on
|
|
generating a key using parameters.
|
|
|
|
=head4 Deprecated low-level object creation
|
|
|
|
Low-level objects were created using methods such as L<RSA_new(3)>,
|
|
L<RSA_up_ref(3)> and L<RSA_free(3)>. Applications should instead use the
|
|
high-level EVP_PKEY APIs, e.g. L<EVP_PKEY_new(3)>, L<EVP_PKEY_up_ref(3)> and
|
|
L<EVP_PKEY_free(3)>.
|
|
See also L<EVP_PKEY_CTX_new_from_name(3)> and L<EVP_PKEY_CTX_new_from_pkey(3)>.
|
|
|
|
EVP_PKEYs may be created in a variety of ways:
|
|
See also L</Deprecated low-level key generation functions>,
|
|
L</Deprecated low-level key reading and writing functions> and
|
|
L</Deprecated low-level key parameter setters>.
|
|
|
|
=head4 Deprecated low-level encryption functions
|
|
|
|
Low-level encryption functions such as L<AES_encrypt(3)> and L<AES_decrypt(3)>
|
|
have been informally discouraged from use for a long time. Applications should
|
|
instead use the high level EVP APIs L<EVP_EncryptInit_ex(3)>,
|
|
L<EVP_EncryptUpdate(3)>, and L<EVP_EncryptFinal_ex(3)> or
|
|
L<EVP_DecryptInit_ex(3)>, L<EVP_DecryptUpdate(3)> and L<EVP_DecryptFinal_ex(3)>.
|
|
|
|
=head4 Deprecated low-level digest functions
|
|
|
|
Use of low-level digest functions such as L<SHA1_Init(3)> have been
|
|
informally discouraged from use for a long time. Applications should instead
|
|
use the the high level EVP APIs L<EVP_DigestInit_ex(3)>, L<EVP_DigestUpdate(3)>
|
|
and L<EVP_DigestFinal_ex(3)>, or the quick one-shot L<EVP_Q_digest(3)>.
|
|
|
|
Note that the functions L<SHA1(3)>, L<SHA224(3)>, L<SHA256(3)>, L<SHA384(3)>
|
|
and L<SHA512(3)> have changed to macros that use L<EVP_Q_digest(3)>.
|
|
|
|
=head4 Deprecated low-level signing functions
|
|
|
|
Use of low-level signing functions such as L<DSA_sign(3)> have been
|
|
informally discouraged for a long time. Instead applications should use
|
|
L<EVP_DigestSign(3)> and L<EVP_DigestVerify(3)>.
|
|
See also L<EVP_SIGNATURE-RSA(7)>, L<EVP_SIGNATURE-DSA(7)>,
|
|
L<EVP_SIGNATURE-ECDSA(7)> and L<EVP_SIGNATURE-ED25519(7)>.
|
|
|
|
=head4 Deprecated low-level MAC functions
|
|
|
|
Low-level mac functions such as L<CMAC_Init(3)> are deprecated.
|
|
Applications should instead use the new L<EVP_MAC(3)> interface, using
|
|
L<EVP_MAC_CTX_new(3)>, L<EVP_MAC_CTX_free(3)>, L<EVP_MAC_init(3)>,
|
|
L<EVP_MAC_update(3)> and L<EVP_MAC_final(3)> or the single-shot MAC function
|
|
L<EVP_Q_mac(3)>.
|
|
See L<EVP_MAC(3)>, L<EVP_MAC-HMAC(7)>, L<EVP_MAC-CMAC(7)>, L<EVP_MAC-GMAC(7)>,
|
|
L<EVP_MAC-KMAC(7)>, L<EVP_MAC-BLAKE2(7)>, L<EVP_MAC-Poly1305(7)> and
|
|
L<EVP_MAC-Siphash(7)> for additional information.
|
|
|
|
Note that the one-shot method HMAC() is still available for compatibility purposes,
|
|
but this can also be replaced by using EVP_Q_MAC if a library context is required.
|
|
|
|
=head4 Deprecated low-level validation functions
|
|
|
|
Low-level validation functions such as L<DH_check(3)> have been informally
|
|
discouraged from use for a long time. Applications should instead use the high-level
|
|
EVP_PKEY APIs such as L<EVP_PKEY_check(3)>, L<EVP_PKEY_param_check(3)>,
|
|
L<EVP_PKEY_param_check_quick(3)>, L<EVP_PKEY_public_check(3)>,
|
|
L<EVP_PKEY_public_check_quick(3)>, L<EVP_PKEY_private_check(3)>,
|
|
and L<EVP_PKEY_pairwise_check(3)>.
|
|
|
|
=head4 Deprecated low-level key exchange functions
|
|
|
|
Many low-level functions have been informally discouraged from use for a long
|
|
time. Applications should instead use L<EVP_PKEY_derive(3)>.
|
|
See L<EVP_KEYEXCH-DH(7)>, L<EVP_KEYEXCH-ECDH(7)> and L<EVP_KEYEXCH-X25519(7)>.
|
|
|
|
=head4 Deprecated low-level key generation functions
|
|
|
|
Many low-level functions have been informally discouraged from use for a long
|
|
time. Applications should instead use L<EVP_PKEY_keygen_init(3)> and
|
|
L<EVP_PKEY_generate(3)> as described in L<EVP_PKEY-DSA(7)>, L<EVP_PKEY-DH(7)>,
|
|
L<EVP_PKEY-RSA(7)>, L<EVP_PKEY-EC(7)> and L<EVP_PKEY-X25519(7)>.
|
|
The 'quick' one-shot function L<EVP_PKEY_Q_keygen(3)> and macros for the most
|
|
common cases: <EVP_RSA_gen(3)> and L<EVP_EC_gen(3)> may also be used.
|
|
|
|
=head4 Deprecated low-level key reading and writing functions
|
|
|
|
Use of low-level objects (such as DSA) has been informally discouraged from use
|
|
for a long time. Functions to read and write these low-level objects (such as
|
|
PEM_read_DSA_PUBKEY()) should be replaced. Applications should instead use
|
|
L<OSSL_ENCODER_to_bio(3)> and L<OSSL_DECODER_from_bio(3)>.
|
|
|
|
=head4 Deprecated low-level key printing functions
|
|
|
|
Use of low-level objects (such as DSA) has been informally discouraged from use
|
|
for a long time. Functions to print these low-level objects such as
|
|
DSA_print() should be replaced with the equivalent EVP_PKEY functions.
|
|
Application should use one of L<EVP_PKEY_print_public(3)>,
|
|
L<EVP_PKEY_print_private(3)>, L<EVP_PKEY_print_params(3)>,
|
|
L<EVP_PKEY_print_public_fp(3)>, L<EVP_PKEY_print_private_fp(3)> or
|
|
L<EVP_PKEY_print_params_fp(3)>. Note that internally these use
|
|
L<OSSL_ENCODER_to_bio(3)> and L<OSSL_DECODER_from_bio(3)>.
|
|
|
|
=head3 Deprecated function mappings
|
|
|
|
The following functions have been deprecated in 3.0.
|
|
|
|
=over 4
|
|
|
|
=item *
|
|
|
|
AES_bi_ige_encrypt() and AES_ige_encrypt()
|
|
|
|
There is no replacement for the IGE functions. New code should not use these modes.
|
|
These undocumented functions were never integrated into the EVP layer.
|
|
They implemented the AES Infinite Garble Extension (IGE) mode and AES
|
|
Bi-directional IGE mode. These modes were never formally standardised and
|
|
usage of these functions is believed to be very small. In particular
|
|
AES_bi_ige_encrypt() has a known bug. It accepts 2 AES keys, but only one
|
|
is ever used. The security implications are believed to be minimal, but
|
|
this issue was never fixed for backwards compatibility reasons.
|
|
|
|
=item *
|
|
|
|
AES_encrypt(), AES_decrypt(), AES_set_encrypt_key(), AES_set_decrypt_key(),
|
|
AES_cbc_encrypt(), AES_cfb128_encrypt(), AES_cfb1_encrypt(), AES_cfb8_encrypt(),
|
|
AES_ecb_encrypt(), AES_ofb128_encrypt()
|
|
|
|
=item *
|
|
|
|
AES_unwrap_key(), AES_wrap_key()
|
|
|
|
See L</Deprecated low-level encryption functions>
|
|
|
|
=item *
|
|
|
|
AES_options()
|
|
|
|
There is no replacement. It returned a string indicating if the AES code was unrolled.
|
|
|
|
=item *
|
|
|
|
ASN1_digest(), ASN1_sign(), ASN1_verify()
|
|
|
|
There are no replacements. These old functions are not used, and could be
|
|
disabled with the macro NO_ASN1_OLD since OpenSSL 0.9.7.
|
|
|
|
=item *
|
|
|
|
ASN1_STRING_length_set()
|
|
|
|
Use L<ASN1_STRING_set(3)> or L<ASN1_STRING_set0(3)> instead.
|
|
This was a potentially unsafe function that could change the bounds of a
|
|
previously passed in pointer.
|
|
|
|
=item *
|
|
|
|
BF_encrypt(), BF_decrypt(), BF_set_key(), BF_cbc_encrypt(), BF_cfb64_encrypt(),
|
|
BF_ecb_encrypt(), BF_ofb64_encrypt()
|
|
|
|
See L</Deprecated low-level encryption functions>.
|
|
The Blowfish algorithm has been moved to the L<Legacy Provider|/Legacy Algorithms>.
|
|
|
|
=item *
|
|
|
|
BF_options()
|
|
|
|
There is no replacement. This option returned a constant string.
|
|
|
|
=item *
|
|
|
|
BIO_get_callback(), BIO_set_callback(), BIO_debug_callback()
|
|
|
|
Use the respective non-deprecated _ex() functions.
|
|
|
|
=item *
|
|
|
|
BN_is_prime_ex(), BN_is_prime_fasttest_ex()
|
|
|
|
Use L<BN_check_prime(3)> which avoids possible misuse and always uses at least
|
|
64 rounds of the Miller-Rabin primality test.
|
|
|
|
=item *
|
|
|
|
BN_pseudo_rand(), BN_pseudo_rand_range()
|
|
|
|
Use L<BN_rand(3)> and L<BN_rand_range(3)>.
|
|
|
|
=item *
|
|
|
|
BN_X931_derive_prime_ex(), BN_X931_generate_prime_ex(), BN_X931_generate_Xpq()
|
|
|
|
There are no replacements for these low-level functions. They were used internally
|
|
by RSA_X931_derive_ex() and RSA_X931_generate_key_ex() which are also deprecated.
|
|
Use L<EVP_PKEY_keygen(3)> instead.
|
|
|
|
=item *
|
|
|
|
Camellia_encrypt(), Camellia_decrypt(), Camellia_set_key(),
|
|
Camellia_cbc_encrypt(), Camellia_cfb128_encrypt(), Camellia_cfb1_encrypt(),
|
|
Camellia_cfb8_encrypt(), Camellia_ctr128_encrypt(), Camellia_ecb_encrypt(),
|
|
Camellia_ofb128_encrypt()
|
|
|
|
See L</Deprecated low-level encryption functions>.
|
|
|
|
=item *
|
|
|
|
CAST_encrypt(), CAST_decrypt(), CAST_set_key(), CAST_cbc_encrypt(),
|
|
CAST_cfb64_encrypt(), CAST_ecb_encrypt(), CAST_ofb64_encrypt()
|
|
|
|
See L</Deprecated low-level encryption functions>.
|
|
The CAST algorithm has been moved to the L<Legacy Provider|/Legacy Algorithms>.
|
|
|
|
=item *
|
|
|
|
CMAC_CTX_new(), CMAC_CTX_cleanup(), CMAC_CTX_copy(), CMAC_CTX_free(),
|
|
CMAC_CTX_get0_cipher_ctx()
|
|
|
|
See L</Deprecated low-level MAC functions>.
|
|
|
|
=item *
|
|
|
|
CMAC_Init(), CMAC_Update(), CMAC_Final(), CMAC_resume()
|
|
|
|
See L</Deprecated low-level MAC functions>.
|
|
|
|
=item *
|
|
|
|
CRYPTO_mem_ctrl(), CRYPTO_mem_debug_free(), CRYPTO_mem_debug_malloc(),
|
|
CRYPTO_mem_debug_pop(), CRYPTO_mem_debug_push(), CRYPTO_mem_debug_realloc(),
|
|
CRYPTO_mem_leaks(), CRYPTO_mem_leaks_cb(), CRYPTO_mem_leaks_fp(),
|
|
CRYPTO_set_mem_debug()
|
|
|
|
Memory-leak checking has been deprecated in favor of more modern development
|
|
tools, such as compiler memory and leak sanitizers or Valgrind.
|
|
|
|
=item *
|
|
|
|
CRYPTO_cts128_encrypt_block(), CRYPTO_cts128_encrypt(),
|
|
CRYPTO_cts128_decrypt_block(), CRYPTO_cts128_decrypt(),
|
|
CRYPTO_nistcts128_encrypt_block(), CRYPTO_nistcts128_encrypt(),
|
|
CRYPTO_nistcts128_decrypt_block(), CRYPTO_nistcts128_decrypt()
|
|
|
|
Use the higher level functions EVP_CipherInit_ex2(), EVP_CipherUpdate() and
|
|
EVP_CipherFinal_ex() instead.
|
|
See the "cts_mode" parameter in
|
|
L<EVP_EncryptInit(3)/Gettable and Settable EVP_CIPHER_CTX parameters>.
|
|
See L<EVP_EncryptInit(3)/EXAMPLES> for a AES-256-CBC-CTS example.
|
|
|
|
=item *
|
|
|
|
d2i_DHparams(), d2i_DHxparams(), d2i_DSAparams(), d2i_DSAPrivateKey(),
|
|
d2i_DSAPrivateKey_bio(), d2i_DSAPrivateKey_fp(), d2i_DSA_PUBKEY(),
|
|
d2i_DSA_PUBKEY_bio(), d2i_DSA_PUBKEY_fp(), d2i_DSAPublicKey(),
|
|
d2i_ECParameters(), d2i_ECPrivateKey(), d2i_ECPrivateKey_bio(),
|
|
d2i_ECPrivateKey_fp(), d2i_EC_PUBKEY(), d2i_EC_PUBKEY_bio(),
|
|
d2i_EC_PUBKEY_fp(), o2i_ECPublicKey(), d2i_RSAPrivateKey(),
|
|
d2i_RSAPrivateKey_bio(), d2i_RSAPrivateKey_fp(), d2i_RSA_PUBKEY(),
|
|
d2i_RSA_PUBKEY_bio(), d2i_RSA_PUBKEY_fp(), d2i_RSAPublicKey(),
|
|
d2i_RSAPublicKey_bio(), d2i_RSAPublicKey_fp()
|
|
|
|
See L</Deprecated i2d and d2i functions for low-level key types>
|
|
|
|
=item *
|
|
|
|
DES_crypt(), DES_fcrypt(), DES_encrypt1(), DES_encrypt2(), DES_encrypt3(),
|
|
DES_decrypt3(), DES_ede3_cbc_encrypt(), DES_ede3_cfb64_encrypt(),
|
|
DES_ede3_cfb_encrypt(),DES_ede3_ofb64_encrypt(),
|
|
DES_ecb_encrypt(), DES_ecb3_encrypt(), DES_ofb64_encrypt(), DES_ofb_encrypt(),
|
|
DES_cfb64_encrypt DES_cfb_encrypt(), DES_cbc_encrypt(), DES_ncbc_encrypt(),
|
|
DES_pcbc_encrypt(), DES_xcbc_encrypt(), DES_cbc_cksum(), DES_quad_cksum(),
|
|
DES_check_key_parity(), DES_is_weak_key(), DES_key_sched(), DES_options(),
|
|
DES_random_key(), DES_set_key(), DES_set_key_checked(), DES_set_key_unchecked(),
|
|
DES_set_odd_parity(), DES_string_to_2keys(), DES_string_to_key()
|
|
|
|
See L</Deprecated low-level encryption functions>.
|
|
Algorithms for "DESX-CBC", "DES-ECB", "DES-CBC", "DES-OFB", "DES-CFB",
|
|
"DES-CFB1" and "DES-CFB8" have been moved to the L<Legacy Provider|/Legacy Algorithms>.
|
|
|
|
=item *
|
|
|
|
DH_bits(), DH_security_bits(), DH_size()
|
|
|
|
Use L<EVP_PKEY_get_bits(3)>, L<EVP_PKEY_get_security_bits(3)> and
|
|
L<EVP_PKEY_get_size(3)>.
|
|
|
|
=item *
|
|
|
|
DH_check(), DH_check_ex(), DH_check_params(), DH_check_params_ex(),
|
|
DH_check_pub_key(), DH_check_pub_key_ex()
|
|
|
|
See L</Deprecated low-level validation functions>
|
|
|
|
=item *
|
|
|
|
DH_clear_flags(), DH_test_flags(), DH_set_flags()
|
|
|
|
The B<DH_FLAG_CACHE_MONT_P> flag has been deprecated without replacement.
|
|
The B<DH_FLAG_TYPE_DH> and B<DH_FLAG_TYPE_DHX> have been deprecated.
|
|
Use EVP_PKEY_is_a() to determine the type of a key.
|
|
There is no replacement for setting these flags.
|
|
|
|
=item *
|
|
|
|
DH_compute_key() DH_compute_key_padded()
|
|
|
|
See L</Deprecated low-level key exchange functions>.
|
|
|
|
=item *
|
|
|
|
DH_new(), DH_new_by_nid(), DH_free(), DH_up_ref()
|
|
|
|
See L</Deprecated low-level object creation>
|
|
|
|
=item *
|
|
|
|
DH_generate_key(), DH_generate_parameters_ex()
|
|
|
|
See L</Deprecated low-level key generation functions>.
|
|
|
|
=item *
|
|
|
|
DH_get0_pqg(), DH_get0_p(), DH_get0_q(), DH_get0_g(), DH_get0_key(),
|
|
DH_get0_priv_key(), DH_get0_pub_key(), DH_get_length(), DH_get_nid()
|
|
|
|
See L</Deprecated low-level key parameter getters>
|
|
|
|
=item *
|
|
|
|
DH_get_1024_160(), DH_get_2048_224(), DH_get_2048_256()
|
|
|
|
Applications should instead set the B<OSSL_PKEY_PARAM_GROUP_NAME> as specified in
|
|
L<EVP_PKEY-DH(7)/DH parameters>) to one of "dh_1024_160", "dh_2048_224" or
|
|
"dh_2048_256" when generating a DH key.
|
|
|
|
=item *
|
|
|
|
DH_KDF_X9_42()
|
|
|
|
Applications should use L<EVP_PKEY_CTX_set_dh_kdf_type(3)> instead.
|
|
|
|
=item *
|
|
|
|
DH_get_default_method(), DH_get0_engine(), DH_meth_*(), DH_new_method(),
|
|
DH_OpenSSL(), DH_get_ex_data(), DH_set_default_method(), DH_set_method(),
|
|
DH_set_ex_data()
|
|
|
|
See L</Providers are a replacement for engines and low-level method overrides>
|
|
|
|
=item *
|
|
|
|
DHparams_print(), DHparams_print_fp()
|
|
|
|
See L</Deprecated low-level key printing functions>
|
|
|
|
=item *
|
|
|
|
DH_set0_key(), DH_set0_pqg(), DH_set_length()
|
|
|
|
See L</Deprecated low-level key parameter setters>
|
|
|
|
=item *
|
|
|
|
DSA_bits(), DSA_security_bits(), DSA_size()
|
|
|
|
Use L<EVP_PKEY_get_bits(3)>, L<EVP_PKEY_get_security_bits(3)> and
|
|
L<EVP_PKEY_get_size(3)>.
|
|
|
|
=item *
|
|
|
|
DHparams_dup(), DSA_dup_DH()
|
|
|
|
There is no direct replacement. Applications may use L<EVP_PKEY_copy_parameters(3)>
|
|
and L<EVP_PKEY_dup(3)> instead.
|
|
|
|
=item *
|
|
|
|
DSA_generate_key(), DSA_generate_parameters_ex()
|
|
|
|
See L</Deprecated low-level key generation functions>.
|
|
|
|
=item *
|
|
|
|
DSA_get0_engine(), DSA_get_default_method(), DSA_get_ex_data(),
|
|
DSA_get_method(), DSA_meth_*(), DSA_new_method(), DSA_OpenSSL(),
|
|
DSA_set_default_method(), DSA_set_ex_data(), DSA_set_method()
|
|
|
|
See L</Providers are a replacement for engines and low-level method overrides>.
|
|
|
|
=item *
|
|
|
|
DSA_get0_p(), DSA_get0_q(), DSA_get0_g(), DSA_get0_pqg(), DSA_get0_key(),
|
|
DSA_get0_priv_key(), DSA_get0_pub_key()
|
|
|
|
See L</Deprecated low-level key parameter getters>.
|
|
|
|
=item *
|
|
|
|
DSA_new(), DSA_free(), DSA_up_ref()
|
|
|
|
See L</Deprecated low-level object creation>
|
|
|
|
=item *
|
|
|
|
DSAparams_dup()
|
|
|
|
There is no direct replacement. Applications may use L<EVP_PKEY_copy_parameters(3)>
|
|
and L<EVP_PKEY_dup(3)> instead.
|
|
|
|
=item *
|
|
|
|
DSAparams_print(), DSAparams_print_fp(), DSA_print(), DSA_print_fp()
|
|
|
|
See L</Deprecated low-level key printing functions>
|
|
|
|
=item *
|
|
|
|
DSA_set0_key(), DSA_set0_pqg()
|
|
|
|
See L</Deprecated low-level key parameter setters>
|
|
|
|
=item *
|
|
|
|
DSA_set_flags(), DSA_clear_flags(), DSA_test_flags()
|
|
|
|
The B<DSA_FLAG_CACHE_MONT_P> flag has been deprecated without replacement.
|
|
|
|
=item *
|
|
|
|
DSA_sign(), DSA_do_sign(), DSA_sign_setup(), DSA_verify(), DSA_do_verify()
|
|
|
|
See L</Deprecated low-level signing functions>.
|
|
|
|
=item *
|
|
|
|
ECDH_compute_key()
|
|
|
|
See L</Deprecated low-level key exchange functions>.
|
|
|
|
=item *
|
|
|
|
ECDH_KDF_X9_62()
|
|
|
|
Applications may either set this using the helper function
|
|
L<EVP_PKEY_CTX_set_ecdh_kdf_type(3)> or by setting an L<OSSL_PARAM(3)> using the
|
|
"kdf-type" as shown in L<EVP_KEYEXCH-ECDH(7)/EXAMPLES>
|
|
|
|
=item *
|
|
|
|
ECDSA_sign(), ECDSA_sign_ex(), ECDSA_sign_setup(), ECDSA_do_sign(),
|
|
ECDSA_do_sign_ex(), ECDSA_verify(), ECDSA_do_verify()
|
|
|
|
See L</Deprecated low-level signing functions>.
|
|
|
|
=item *
|
|
|
|
ECDSA_size()
|
|
|
|
Applications should use L<EVP_PKEY_get_size(3)>.
|
|
|
|
=item *
|
|
|
|
EC_GF2m_simple_method(), EC_GFp_mont_method(), EC_GFp_nist_method(),
|
|
EC_GFp_nistp224_method(), EC_GFp_nistp256_method(), EC_GFp_nistp521_method(),
|
|
EC_GFp_simple_method()
|
|
|
|
There are no replacements for these functions. Applications should rely on the
|
|
library automatically assigning a suitable method internally when an EC_GROUP
|
|
is constructed.
|
|
|
|
=item *
|
|
|
|
EC_GROUP_clear_free()
|
|
|
|
Use L<EC_GROUP_free(3)> instead.
|
|
|
|
=item *
|
|
|
|
EC_GROUP_get_curve_GF2m(), EC_GROUP_get_curve_GFp(), EC_GROUP_set_curve_GF2m(),
|
|
EC_GROUP_set_curve_GFp()
|
|
|
|
Applications should use L<EC_GROUP_get_curve(3)> and L<EC_GROUP_set_curve(3)>.
|
|
|
|
=item *
|
|
|
|
EC_GROUP_have_precompute_mult(), EC_GROUP_precompute_mult(),
|
|
EC_KEY_precompute_mult()
|
|
|
|
These functions are not widely used. Applications should instead switch to
|
|
named curves which OpenSSL has hardcoded lookup tables for.
|
|
|
|
=item *
|
|
|
|
EC_GROUP_new(), EC_GROUP_method_of(), EC_POINT_method_of()
|
|
|
|
EC_METHOD is now an internal-only concept and a suitable EC_METHOD is assigned
|
|
internally without application intervention.
|
|
Users of EC_GROUP_new() should switch to a different suitable constructor.
|
|
|
|
=item *
|
|
|
|
EC_KEY_can_sign()
|
|
|
|
Applications should use L<EVP_PKEY_can_sign(3)> instead.
|
|
|
|
=item *
|
|
|
|
EC_KEY_check_key()
|
|
|
|
See L</Deprecated low-level validation functions>
|
|
|
|
=item *
|
|
|
|
EC_KEY_set_flags(), EC_KEY_get_flags(), EC_KEY_clear_flags()
|
|
|
|
See L<EVP_PKEY-EC(7)/Common EC parameters> which handles flags as separate
|
|
parameters for B<OSSL_PKEY_PARAM_EC_POINT_CONVERSION_FORMAT>,
|
|
B<OSSL_PKEY_PARAM_EC_GROUP_CHECK_TYPE>, B<OSSL_PKEY_PARAM_EC_ENCODING>,
|
|
B<OSSL_PKEY_PARAM_USE_COFACTOR_ECDH> and
|
|
B<OSSL_PKEY_PARAM_EC_INCLUDE_PUBLIC>.
|
|
See also L<EVP_PKEY-EC(7)/EXAMPLES>
|
|
|
|
=item *
|
|
|
|
EC_KEY_dup(), EC_KEY_copy()
|
|
|
|
There is no direct replacement. Applications may use L<EVP_PKEY_copy_parameters(3)>
|
|
and L<EVP_PKEY_dup(3)> instead.
|
|
|
|
=item *
|
|
|
|
EC_KEY_decoded_from_explicit_params()
|
|
|
|
There is no replacement.
|
|
|
|
=item *
|
|
|
|
EC_KEY_generate_key()
|
|
|
|
See L</Deprecated low-level key generation functions>.
|
|
|
|
=item *
|
|
|
|
EC_KEY_get0_group(), EC_KEY_get0_private_key(), EC_KEY_get0_public_key(),
|
|
EC_KEY_get_conv_form(), EC_KEY_get_enc_flags()
|
|
|
|
See L</Deprecated low-level key parameter getters>.
|
|
|
|
=item *
|
|
|
|
EC_KEY_get0_engine(), EC_KEY_get_default_method(), EC_KEY_get_method(),
|
|
EC_KEY_new_method(), EC_KEY_get_ex_data(), EC_KEY_OpenSSL(),
|
|
EC_KEY_set_ex_data(), EC_KEY_set_default_method(), EC_KEY_METHOD_*(),
|
|
EC_KEY_set_method()
|
|
|
|
See L</Providers are a replacement for engines and low-level method overrides>
|
|
|
|
=item *
|
|
|
|
EC_METHOD_get_field_type()
|
|
|
|
Use L<EC_GROUP_get_field_type(3)> instead.
|
|
See L</Providers are a replacement for engines and low-level method overrides>
|
|
|
|
=item *
|
|
|
|
EC_KEY_key2buf(), EC_KEY_oct2key(), EC_KEY_oct2priv(), EC_KEY_priv2buf(),
|
|
EC_KEY_priv2oct()
|
|
|
|
There are no replacements for these.
|
|
|
|
=item *
|
|
|
|
EC_KEY_new(), EC_KEY_new_by_curve_name(), EC_KEY_free(), EC_KEY_up_ref()
|
|
|
|
See L</Deprecated low-level object creation>
|
|
|
|
=item *
|
|
|
|
EC_KEY_print(), EC_KEY_print_fp()
|
|
|
|
See L</Deprecated low-level key printing functions>
|
|
|
|
=item *
|
|
|
|
EC_KEY_set_asn1_flag(), EC_KEY_set_conv_form(), EC_KEY_set_enc_flags()
|
|
|
|
See L</Deprecated low-level key parameter setters>.
|
|
|
|
=item *
|
|
|
|
EC_KEY_set_group(), EC_KEY_set_private_key(), EC_KEY_set_public_key(),
|
|
EC_KEY_set_public_key_affine_coordinates()
|
|
|
|
See L</Deprecated low-level key parameter setters>.
|
|
|
|
=item *
|
|
|
|
ECParameters_print(), ECParameters_print_fp(), ECPKParameters_print(),
|
|
ECPKParameters_print_fp()
|
|
|
|
See L</Deprecated low-level key printing functions>
|
|
|
|
=item *
|
|
|
|
EC_POINT_bn2point(), EC_POINT_point2bn()
|
|
|
|
These functions were not particularly useful, since EC point serialization
|
|
formats are not individual big-endian integers.
|
|
|
|
=item *
|
|
|
|
EC_POINT_get_affine_coordinates_GF2m(), EC_POINT_get_affine_coordinates_GFp(),
|
|
EC_POINT_set_affine_coordinates_GF2m(), EC_POINT_set_affine_coordinates_GFp()
|
|
|
|
Applications should use L<EC_POINT_get_affine_coordinates(3)> and
|
|
L<EC_POINT_set_affine_coordinates(3)> instead.
|
|
|
|
=item *
|
|
|
|
EC_POINT_get_Jprojective_coordinates_GFp(), EC_POINT_set_Jprojective_coordinates_GFp()
|
|
|
|
These functions are not widely used. Applications should instead use the
|
|
L<EC_POINT_set_affine_coordinates(3)> and L<EC_POINT_get_affine_coordinates(3)>
|
|
functions.
|
|
|
|
=item *
|
|
|
|
EC_POINT_make_affine(), EC_POINTs_make_affine()
|
|
|
|
There is no replacement. These functions were not widely used, and OpenSSL
|
|
automatically performs this conversion when needed.
|
|
|
|
=item *
|
|
|
|
EC_POINT_set_compressed_coordinates_GF2m(), EC_POINT_set_compressed_coordinates_GFp()
|
|
|
|
Applications should use L<EC_POINT_set_compressed_coordinates(3)> instead.
|
|
|
|
=item *
|
|
|
|
EC_POINTs_mul()
|
|
|
|
This function is not widely used. Applications should instead use the
|
|
L<EC_POINT_mul(3)> function.
|
|
|
|
=item *
|
|
|
|
B<ENGINE_*()>
|
|
|
|
All engine functions are deprecated. An engine should be rewritten as a provider.
|
|
See L</Providers are a replacement for engines and low-level method overrides>.
|
|
|
|
=item *
|
|
|
|
B<ERR_load_*()>, ERR_func_error_string(), ERR_get_error_line(),
|
|
ERR_get_error_line_data(), ERR_get_state()
|
|
|
|
OpenSSL now loads error strings automatically so these functions are not needed.
|
|
|
|
=item *
|
|
|
|
ERR_peek_error_line_data(), ERR_peek_last_error_line_data()
|
|
|
|
The new functions are L<ERR_peek_error_func(3)>, L<ERR_peek_last_error_func(3)>,
|
|
L<ERR_peek_error_data(3)>, L<ERR_peek_last_error_data(3)>, L<ERR_get_error_all(3)>,
|
|
L<ERR_peek_error_all(3)> and L<ERR_peek_last_error_all(3)>.
|
|
Applications should use L<ERR_get_error_all(3)>, or pick information
|
|
with ERR_peek functions and finish off with getting the error code by using
|
|
L<ERR_get_error(3)>.
|
|
|
|
=item *
|
|
|
|
EVP_CIPHER_CTX_iv(), EVP_CIPHER_CTX_iv_noconst(), EVP_CIPHER_CTX_original_iv()
|
|
|
|
Applications should instead use L<EVP_CIPHER_CTX_get_updated_iv(3)>,
|
|
L<EVP_CIPHER_CTX_get_updated_iv(3)> and L<EVP_CIPHER_CTX_get_original_iv(3)>
|
|
respectively.
|
|
See L<EVP_CIPHER_CTX_get_original_iv(3)> for further information.
|
|
|
|
=item *
|
|
|
|
B<EVP_CIPHER_meth_*()>, EVP_MD_CTX_set_update_fn(), EVP_MD_CTX_update_fn(),
|
|
B<EVP_MD_meth_*()>
|
|
|
|
See L</Providers are a replacement for engines and low-level method overrides>.
|
|
|
|
=item *
|
|
|
|
EVP_PKEY_CTRL_PKCS7_ENCRYPT(), EVP_PKEY_CTRL_PKCS7_DECRYPT(),
|
|
EVP_PKEY_CTRL_PKCS7_SIGN(), EVP_PKEY_CTRL_CMS_ENCRYPT(),
|
|
EVP_PKEY_CTRL_CMS_DECRYPT(), and EVP_PKEY_CTRL_CMS_SIGN()
|
|
|
|
These control operations are not invoked by the OpenSSL library anymore and
|
|
are replaced by direct checks of the key operation against the key type
|
|
when the operation is initialized.
|
|
|
|
=item *
|
|
|
|
EVP_PKEY_CTX_get0_dh_kdf_ukm(), EVP_PKEY_CTX_get0_ecdh_kdf_ukm()
|
|
|
|
See the "kdf-ukm" item in L<EVP_KEYEXCH-DH(7)/DH key exchange parameters> and
|
|
L<EVP_KEYEXCH-ECDH(7)/ECDH Key Exchange parameters>.
|
|
These functions are obsolete and should not be required.
|
|
|
|
=item *
|
|
|
|
EVP_PKEY_CTX_set_rsa_keygen_pubexp()
|
|
|
|
Applications should use L<EVP_PKEY_CTX_set1_rsa_keygen_pubexp(3)> instead.
|
|
|
|
=item *
|
|
|
|
EVP_PKEY_cmp(), EVP_PKEY_cmp_parameters()
|
|
|
|
Applications should use L<EVP_PKEY_eq(3)> and L<EVP_PKEY_parameters_eq(3)> instead.
|
|
See L<EVP_PKEY_copy_parameters(3)> for further details.
|
|
|
|
=item *
|
|
|
|
EVP_PKEY_encrypt_old(), EVP_PKEY_decrypt_old(),
|
|
|
|
Applications should use L<EVP_PKEY_encrypt_init(3)> and L<EVP_PKEY_encrypt(3)> or
|
|
L<EVP_PKEY_decrypt_init(3)> and L<EVP_PKEY_decrypt(3)> instead.
|
|
|
|
=item *
|
|
|
|
EVP_PKEY_get0()
|
|
|
|
This function returns NULL if the key comes from a provider.
|
|
|
|
=item *
|
|
|
|
EVP_PKEY_get0_DH(), EVP_PKEY_get0_DSA(), EVP_PKEY_get0_EC_KEY(), EVP_PKEY_get0_RSA(),
|
|
EVP_PKEY_get1_DH(), EVP_PKEY_get1_DSA(), EVP_PKEY_get1_EC_KEY and EVP_PKEY_get1_RSA(),
|
|
EVP_PKEY_get0_hmac(), EVP_PKEY_get0_poly1305(), EVP_PKEY_get0_siphash()
|
|
|
|
See L</Functions that return an internal key should be treated as read only>.
|
|
|
|
=item *
|
|
|
|
B<EVP_PKEY_meth_*()>
|
|
|
|
See L</Providers are a replacement for engines and low-level method overrides>.
|
|
|
|
=item *
|
|
|
|
EVP_PKEY_new_CMAC_key()
|
|
|
|
See L</Deprecated low-level MAC functions>.
|
|
|
|
=item *
|
|
|
|
EVP_PKEY_assign(), EVP_PKEY_set1_DH(), EVP_PKEY_set1_DSA(),
|
|
EVP_PKEY_set1_EC_KEY(), EVP_PKEY_set1_RSA()
|
|
|
|
See L</Deprecated low-level key object getters and setters>
|
|
|
|
=item *
|
|
|
|
EVP_PKEY_set1_tls_encodedpoint() EVP_PKEY_get1_tls_encodedpoint()
|
|
|
|
These functions were previously used by libssl to set or get an encoded public
|
|
key into/from an EVP_PKEY object. With OpenSSL 3.0 these are replaced by the more
|
|
generic functions L<EVP_PKEY_set1_encoded_public_key(3)> and
|
|
L<EVP_PKEY_get1_encoded_public_key(3)>.
|
|
The old versions have been converted to deprecated macros that just call the
|
|
new functions.
|
|
|
|
=item *
|
|
|
|
EVP_PKEY_set1_engine(), EVP_PKEY_get0_engine()
|
|
|
|
See L</Providers are a replacement for engines and low-level method overrides>.
|
|
|
|
=item *
|
|
|
|
EVP_PKEY_set_alias_type()
|
|
|
|
This function has been removed. There is no replacement.
|
|
See L</EVP_PKEY_set_alias_type() method has been removed>
|
|
|
|
=item *
|
|
|
|
HMAC_Init_ex(), HMAC_Update(), HMAC_Final(), HMAC_size()
|
|
|
|
See L</Deprecated low-level MAC functions>.
|
|
|
|
=item *
|
|
|
|
HMAC_CTX_new(), HMAC_CTX_free(), HMAC_CTX_copy(), HMAC_CTX_reset(),
|
|
HMAC_CTX_set_flags(), HMAC_CTX_get_md()
|
|
|
|
See L</Deprecated low-level MAC functions>.
|
|
|
|
=item *
|
|
|
|
i2d_DHparams(), i2d_DHxparams()
|
|
|
|
See L</Deprecated low-level key reading and writing functions>
|
|
and L<d2i_RSAPrivateKey(3)/Migration>
|
|
|
|
=item *
|
|
|
|
i2d_DSAparams(), i2d_DSAPrivateKey(), i2d_DSAPrivateKey_bio(),
|
|
i2d_DSAPrivateKey_fp(), i2d_DSA_PUBKEY(), i2d_DSA_PUBKEY_bio(),
|
|
i2d_DSA_PUBKEY_fp(), i2d_DSAPublicKey()
|
|
|
|
See L</Deprecated low-level key reading and writing functions>
|
|
and L<d2i_RSAPrivateKey(3)/Migration>
|
|
|
|
=item *
|
|
|
|
i2d_ECParameters(), i2d_ECPrivateKey(), i2d_ECPrivateKey_bio(),
|
|
i2d_ECPrivateKey_fp(), i2d_EC_PUBKEY(), i2d_EC_PUBKEY_bio(),
|
|
i2d_EC_PUBKEY_fp(), i2o_ECPublicKey()
|
|
|
|
See L</Deprecated low-level key reading and writing functions>
|
|
and L<d2i_RSAPrivateKey(3)/Migration>
|
|
|
|
=item *
|
|
|
|
i2d_RSAPrivateKey(), i2d_RSAPrivateKey_bio(), i2d_RSAPrivateKey_fp(),
|
|
i2d_RSA_PUBKEY(), i2d_RSA_PUBKEY_bio(), i2d_RSA_PUBKEY_fp(),
|
|
i2d_RSAPublicKey(), i2d_RSAPublicKey_bio(), i2d_RSAPublicKey_fp()
|
|
|
|
See L</Deprecated low-level key reading and writing functions>
|
|
and L<d2i_RSAPrivateKey(3)/Migration>
|
|
|
|
=item *
|
|
|
|
IDEA_encrypt(), IDEA_set_decrypt_key(), IDEA_set_encrypt_key(),
|
|
IDEA_cbc_encrypt(), IDEA_cfb64_encrypt(), IDEA_ecb_encrypt(),
|
|
IDEA_ofb64_encrypt()
|
|
|
|
See L</Deprecated low-level encryption functions>.
|
|
IDEA has been moved to the L<Legacy Provider|/Legacy Algorithms>.
|
|
|
|
=item *
|
|
|
|
IDEA_options()
|
|
|
|
There is no replacement. This function returned a constant string.
|
|
|
|
=item *
|
|
|
|
MD2(), MD2_Init(), MD2_Update(), MD2_Final()
|
|
|
|
See L</Deprecated low-level encryption functions>.
|
|
MD2 has been moved to the L<Legacy Provider|/Legacy Algorithms>.
|
|
|
|
=item *
|
|
|
|
MD2_options()
|
|
|
|
There is no replacement. This function returned a constant string.
|
|
|
|
=item *
|
|
|
|
MD4(), MD4_Init(), MD4_Update(), MD4_Final(), MD4_Transform()
|
|
|
|
See L</Deprecated low-level encryption functions>.
|
|
MD4 has been moved to the L<Legacy Provider|/Legacy Algorithms>.
|
|
|
|
=item *
|
|
|
|
MDC2(), MDC2_Init(), MDC2_Update(), MDC2_Final()
|
|
|
|
See L</Deprecated low-level encryption functions>.
|
|
MDC2 has been moved to the L<Legacy Provider|/Legacy Algorithms>.
|
|
|
|
=item *
|
|
|
|
MD5(), MD5_Init(), MD5_Update(), MD5_Final(), MD5_Transform()
|
|
|
|
See L</Deprecated low-level encryption functions>.
|
|
|
|
=item *
|
|
|
|
NCONF_WIN32()
|
|
|
|
This undocumented function has no replacement.
|
|
See L<config(5)/HISTORY> for more details.
|
|
|
|
=item *
|
|
|
|
OCSP_parse_url()
|
|
|
|
Use L<OSSL_HTTP_parse_url(3)> instead.
|
|
|
|
=item *
|
|
|
|
B<OCSP_REQ_CTX> type and B<OCSP_REQ_CTX_*()> functions
|
|
|
|
These methods were used to collect all necessary data to form a HTTP request,
|
|
and to perform the HTTP transfer with that request. With OpenSSL 3.0, the
|
|
type is B<OSSL_HTTP_REQ_CTX>, and the deprecated functions are replaced
|
|
with B<OSSL_HTTP_REQ_CTX_*()>. See L<OSSL_HTTP_REQ_CTX(3)> for additional
|
|
details.
|
|
|
|
=item *
|
|
|
|
OPENSSL_fork_child(), OPENSSL_fork_parent(), OPENSSL_fork_prepare()
|
|
|
|
There is no replacement for these functions. These pthread fork support methods
|
|
were unused by OpenSSL.
|
|
|
|
=item *
|
|
|
|
OSSL_STORE_ctrl(), OSSL_STORE_do_all_loaders(), OSSL_STORE_LOADER_get0_engine(),
|
|
OSSL_STORE_LOADER_get0_scheme(), OSSL_STORE_LOADER_new(),
|
|
OSSL_STORE_LOADER_set_attach(), OSSL_STORE_LOADER_set_close(),
|
|
OSSL_STORE_LOADER_set_ctrl(), OSSL_STORE_LOADER_set_eof(),
|
|
OSSL_STORE_LOADER_set_error(), OSSL_STORE_LOADER_set_expect(),
|
|
OSSL_STORE_LOADER_set_find(), OSSL_STORE_LOADER_set_load(),
|
|
OSSL_STORE_LOADER_set_open(), OSSL_STORE_LOADER_set_open_ex(),
|
|
OSSL_STORE_register_loader(), OSSL_STORE_unregister_loader(),
|
|
OSSL_STORE_vctrl()
|
|
|
|
These functions helped applications and engines create loaders for
|
|
schemes they supported. These are all deprecated and discouraged in favour of
|
|
provider implementations, see L<provider-storemgmt(7)>.
|
|
|
|
=item *
|
|
|
|
PEM_read_DHparams(), PEM_read_bio_DHparams(),
|
|
PEM_read_DSAparams(), PEM_read_bio_DSAparams(),
|
|
PEM_read_DSAPrivateKey(), PEM_read_DSA_PUBKEY(),
|
|
PEM_read_bio_DSAPrivateKey and PEM_read_bio_DSA_PUBKEY(),
|
|
PEM_read_ECPKParameters(), PEM_read_ECPrivateKey(), PEM_read_EC_PUBKEY(),
|
|
PEM_read_bio_ECPKParameters(), PEM_read_bio_ECPrivateKey(), PEM_read_bio_EC_PUBKEY(),
|
|
PEM_read_RSAPrivateKey(), PEM_read_RSA_PUBKEY(), PEM_read_RSAPublicKey(),
|
|
PEM_read_bio_RSAPrivateKey(), PEM_read_bio_RSA_PUBKEY(), PEM_read_bio_RSAPublicKey(),
|
|
PEM_write_bio_DHparams(), PEM_write_bio_DHxparams(), PEM_write_DHparams(), PEM_write_DHxparams(),
|
|
PEM_write_DSAparams(), PEM_write_DSAPrivateKey(), PEM_write_DSA_PUBKEY(),
|
|
PEM_write_bio_DSAparams(), PEM_write_bio_DSAPrivateKey(), PEM_write_bio_DSA_PUBKEY(),
|
|
PEM_write_ECPKParameters(), PEM_write_ECPrivateKey(), PEM_write_EC_PUBKEY(),
|
|
PEM_write_bio_ECPKParameters(), PEM_write_bio_ECPrivateKey(), PEM_write_bio_EC_PUBKEY(),
|
|
PEM_write_RSAPrivateKey(), PEM_write_RSA_PUBKEY(), PEM_write_RSAPublicKey(),
|
|
PEM_write_bio_RSAPrivateKey(), PEM_write_bio_RSA_PUBKEY(),
|
|
PEM_write_bio_RSAPublicKey(),
|
|
|
|
See L</Deprecated low-level key reading and writing functions>
|
|
|
|
=item *
|
|
|
|
PKCS1_MGF1()
|
|
|
|
See L</Deprecated low-level encryption functions>.
|
|
|
|
=item *
|
|
|
|
RAND_get_rand_method(), RAND_set_rand_method(), RAND_OpenSSL(),
|
|
RAND_set_rand_engine()
|
|
|
|
Applications should instead use L<RAND_set_DRBG_type(3)>,
|
|
L<EVP_RAND(3)> and L<EVP_RAND(7)>.
|
|
See L<RAND_set_rand_method(3)> for more details.
|
|
|
|
=item *
|
|
|
|
RC2_encrypt(), RC2_decrypt(), RC2_set_key(), RC2_cbc_encrypt(), RC2_cfb64_encrypt(),
|
|
RC2_ecb_encrypt(), RC2_ofb64_encrypt(),
|
|
RC4(), RC4_set_key(), RC4_options(),
|
|
RC5_32_encrypt(), RC5_32_set_key(), RC5_32_decrypt(), RC5_32_cbc_encrypt(),
|
|
RC5_32_cfb64_encrypt(), RC5_32_ecb_encrypt(), RC5_32_ofb64_encrypt()
|
|
|
|
See L</Deprecated low-level encryption functions>.
|
|
The Algorithms "RC2", "RC4" and "RC5" have been moved to the L<Legacy Provider|/Legacy Algorithms>.
|
|
|
|
=item *
|
|
|
|
RIPEMD160(), RIPEMD160_Init(), RIPEMD160_Update(), RIPEMD160_Final(),
|
|
RIPEMD160_Transform()
|
|
|
|
See L</Deprecated low-level digest functions>.
|
|
The RIPE algorithm has been moved to the L<Legacy Provider|/Legacy Algorithms>.
|
|
|
|
=item *
|
|
|
|
RSA_bits(), RSA_security_bits(), RSA_size()
|
|
|
|
Use L<EVP_PKEY_get_bits(3)>, L<EVP_PKEY_get_security_bits(3)> and
|
|
L<EVP_PKEY_get_size(3)>.
|
|
|
|
=item *
|
|
|
|
RSA_check_key(), RSA_check_key_ex()
|
|
|
|
See L</Deprecated low-level validation functions>
|
|
|
|
=item *
|
|
|
|
RSA_clear_flags(), RSA_flags(), RSA_set_flags(), RSA_test_flags(),
|
|
RSA_setup_blinding(), RSA_blinding_off(), RSA_blinding_on()
|
|
|
|
All of these RSA flags have been deprecated without replacement:
|
|
|
|
B<RSA_FLAG_BLINDING>, B<RSA_FLAG_CACHE_PRIVATE>, B<RSA_FLAG_CACHE_PUBLIC>,
|
|
B<RSA_FLAG_EXT_PKEY>, B<RSA_FLAG_NO_BLINDING>, B<RSA_FLAG_THREAD_SAFE>
|
|
B<RSA_METHOD_FLAG_NO_CHECK>
|
|
|
|
=item *
|
|
|
|
RSA_generate_key_ex(), RSA_generate_multi_prime_key()
|
|
|
|
See L</Deprecated low-level key generation functions>.
|
|
|
|
=item *
|
|
|
|
RSA_get0_engine()
|
|
|
|
See L</Providers are a replacement for engines and low-level method overrides>
|
|
|
|
=item *
|
|
|
|
RSA_get0_crt_params(), RSA_get0_d(), RSA_get0_dmp1(), RSA_get0_dmq1(),
|
|
RSA_get0_e(), RSA_get0_factors(), RSA_get0_iqmp(), RSA_get0_key(),
|
|
RSA_get0_multi_prime_crt_params(), RSA_get0_multi_prime_factors(), RSA_get0_n(),
|
|
RSA_get0_p(), RSA_get0_pss_params(), RSA_get0_q(),
|
|
RSA_get_multi_prime_extra_count()
|
|
|
|
See L</Deprecated low-level key parameter getters>
|
|
|
|
=item *
|
|
|
|
RSA_new(), RSA_free(), RSA_up_ref()
|
|
|
|
See L</Deprecated low-level object creation>.
|
|
|
|
=item *
|
|
|
|
RSA_get_default_method(), RSA_get_ex_data and RSA_get_method()
|
|
|
|
See L</Providers are a replacement for engines and low-level method overrides>.
|
|
|
|
=item *
|
|
|
|
RSA_get_version()
|
|
|
|
There is no replacement.
|
|
|
|
=item *
|
|
|
|
B<RSA_meth_*()>, RSA_new_method(), RSA_null_method and RSA_PKCS1_OpenSSL()
|
|
|
|
See L</Providers are a replacement for engines and low-level method overrides>.
|
|
|
|
=item *
|
|
|
|
B<RSA_padding_add_*()>, B<RSA_padding_check_*()>
|
|
|
|
See L</Deprecated low-level signing functions> and
|
|
L</Deprecated low-level encryption functions>.
|
|
|
|
=item *
|
|
|
|
RSA_print(), RSA_print_fp()
|
|
|
|
See L</Deprecated low-level key printing functions>
|
|
|
|
=item *
|
|
|
|
RSA_public_encrypt(), RSA_private_decrypt()
|
|
|
|
See L</Deprecated low-level encryption functions>
|
|
|
|
=item *
|
|
|
|
RSA_private_encrypt(), RSA_public_decrypt()
|
|
|
|
This is equivalent to doing sign and verify recover operations (with a padding
|
|
mode of none). See L</Deprecated low-level signing functions>.
|
|
|
|
=item *
|
|
|
|
RSAPrivateKey_dup(), RSAPublicKey_dup()
|
|
|
|
There is no direct replacement. Applications may use L<EVP_PKEY_dup(3)>.
|
|
|
|
=item *
|
|
|
|
RSAPublicKey_it(), RSAPrivateKey_it()
|
|
|
|
See L</Deprecated low-level key reading and writing functions>
|
|
|
|
=item *
|
|
|
|
RSA_set0_crt_params(), RSA_set0_factors(), RSA_set0_key(),
|
|
RSA_set0_multi_prime_params()
|
|
|
|
See L</Deprecated low-level key parameter setters>.
|
|
|
|
=item *
|
|
|
|
RSA_set_default_method(), RSA_set_method(), RSA_set_ex_data()
|
|
|
|
See L</Providers are a replacement for engines and low-level method overrides>
|
|
|
|
=item *
|
|
|
|
RSA_sign(), RSA_sign_ASN1_OCTET_STRING(), RSA_verify(),
|
|
RSA_verify_ASN1_OCTET_STRING(), RSA_verify_PKCS1_PSS(),
|
|
RSA_verify_PKCS1_PSS_mgf1()
|
|
|
|
See L</Deprecated low-level signing functions>.
|
|
|
|
=item *
|
|
|
|
RSA_X931_derive_ex(), RSA_X931_generate_key_ex(), RSA_X931_hash_id()
|
|
|
|
There are no replacements for these functions.
|
|
X931 padding can be set using L<EVP_SIGNATURE-RSA(7)/Signature Parameters>.
|
|
See B<OSSL_SIGNATURE_PARAM_PAD_MODE>.
|
|
|
|
=item *
|
|
|
|
SEED_encrypt(), SEED_decrypt(), SEED_set_key(), SEED_cbc_encrypt(),
|
|
SEED_cfb128_encrypt(), SEED_ecb_encrypt(), SEED_ofb128_encrypt()
|
|
|
|
See L</Deprecated low-level encryption functions>.
|
|
The SEED algorithm has been moved to the L<Legacy Provider|/Legacy Algorithms>.
|
|
|
|
=item *
|
|
|
|
SHA1_Init(), SHA1_Update(), SHA1_Final(), SHA1_Transform(),
|
|
SHA224_Init(), SHA224_Update(), SHA224_Final(),
|
|
SHA256_Init(), SHA256_Update(), SHA256_Final(), SHA256_Transform(),
|
|
SHA384_Init(), SHA384_Update(), SHA384_Final(),
|
|
SHA512_Init(), SHA512_Update(), SHA512_Final(), SHA512_Transform()
|
|
|
|
See L</Deprecated low-level digest functions>.
|
|
|
|
=item *
|
|
|
|
SRP_Calc_A(), SRP_Calc_B(), SRP_Calc_client_key(), SRP_Calc_server_key(),
|
|
SRP_Calc_u(), SRP_Calc_x(), SRP_check_known_gN_param(), SRP_create_verifier(),
|
|
SRP_create_verifier_BN(), SRP_get_default_gN(), SRP_user_pwd_free(), SRP_user_pwd_new(),
|
|
SRP_user_pwd_set0_sv(), SRP_user_pwd_set1_ids(), SRP_user_pwd_set_gN(),
|
|
SRP_VBASE_add0_user(), SRP_VBASE_free(), SRP_VBASE_get1_by_user(), SRP_VBASE_init(),
|
|
SRP_VBASE_new(), SRP_Verify_A_mod_N(), SRP_Verify_B_mod_N()
|
|
|
|
There are no replacements for the SRP functions.
|
|
|
|
=item *
|
|
|
|
SSL_CTX_set_tmp_dh_callback(), SSL_set_tmp_dh_callback(),
|
|
SSL_CTX_set_tmp_dh(), SSL_set_tmp_dh()
|
|
|
|
These are used to set the Diffie-Hellman (DH) parameters that are to be used by
|
|
servers requiring ephemeral DH keys. Instead applications should consider using
|
|
the built-in DH parameters that are available by calling L<SSL_CTX_set_dh_auto(3)>
|
|
or L<SSL_set_dh_auto(3)>. If custom parameters are necessary then applications can
|
|
use the alternative functions L<SSL_CTX_set0_tmp_dh_pkey(3)> and
|
|
L<SSL_set0_tmp_dh_pkey(3)>. There is no direct replacement for the "callback"
|
|
functions. The callback was originally useful in order to have different
|
|
parameters for export and non-export ciphersuites. Export ciphersuites are no
|
|
longer supported by OpenSSL. Use of the callback functions should be replaced
|
|
by one of the other methods described above.
|
|
|
|
=item *
|
|
|
|
SSL_CTX_set_tlsext_ticket_key_cb()
|
|
|
|
Use the new L<SSL_CTX_set_tlsext_ticket_key_evp_cb(3)> function instead.
|
|
|
|
=item *
|
|
|
|
WHIRLPOOL(), WHIRLPOOL_Init(), WHIRLPOOL_Update(), WHIRLPOOL_Final(),
|
|
WHIRLPOOL_BitUpdate()
|
|
|
|
See L</Deprecated low-level digest functions>.
|
|
The Whirlpool algorithm has been moved to the L<Legacy Provider|/Legacy Algorithms>.
|
|
|
|
=item *
|
|
|
|
X509_certificate_type()
|
|
|
|
This was an undocumented function. Applications can use L<X509_get0_pubkey(3)>
|
|
and L<X509_get0_signature(3)> instead.
|
|
|
|
=item *
|
|
|
|
X509_http_nbio(), X509_CRL_http_nbio()
|
|
|
|
Use L<X509_load_http(3)> and L<X509_CRL_load_http(3)> instead.
|
|
|
|
=back
|
|
|
|
=head3 NID handling for provided keys and algorithms
|
|
|
|
The following functions for NID (numeric id) handling have changed semantics.
|
|
|
|
=over 4
|
|
|
|
=item *
|
|
|
|
EVP_PKEY_id(), EVP_PKEY_get_id()
|
|
|
|
This function was previously used to reliably return the NID of
|
|
an EVP_PKEY object, e.g., to look up the name of the algorithm of
|
|
such EVP_PKEY by calling L<OBJ_nid2sn(3)>. With the introduction
|
|
of L<provider(7)>s EVP_PKEY_id() or its new equivalent
|
|
L<EVP_PKEY_get_id(3)> might now also return the value -1
|
|
(B<EVP_PKEY_KEYMGMT>) indicating the use of a provider to
|
|
implement the EVP_PKEY object. Therefore, the use of
|
|
L<EVP_PKEY_get0_type_name(3)> is recommended for retrieving
|
|
the name of the EVP_PKEY algorithm.
|
|
|
|
=back
|
|
|
|
=head2 Using the FIPS Module in applications
|
|
|
|
See L<fips_module(7)> and L<OSSL_PROVIDER-FIPS(7)> for details.
|
|
|
|
=head2 OpenSSL command line application changes
|
|
|
|
=head3 New applications
|
|
|
|
L<B<openssl kdf>|openssl-kdf(1)> uses the new L<EVP_KDF(3)> API.
|
|
L<B<openssl kdf>|openssl-mac(1)> uses the new L<EVP_MAC(3)> API.
|
|
|
|
=head3 Added options
|
|
|
|
B<-provider_path> and B<-provider> are available to all apps and can be used
|
|
multiple times to load any providers, such as the 'legacy' provider or third
|
|
party providers. If used then the 'default' provider would also need to be
|
|
specified if required. The B<-provider_path> must be specified before the
|
|
B<-provider> option.
|
|
|
|
The B<list> app has many new options. See L<openssl-list(1)> for more
|
|
information.
|
|
|
|
B<-crl_lastupdate> and B<-crl_nextupdate> used by B<openssl ca> allows
|
|
explicit setting of fields in the generated CRL.
|
|
|
|
=head3 Removed options
|
|
|
|
Interactive mode is not longer available.
|
|
|
|
The B<-crypt> option used by B<openssl passwd>.
|
|
The B<-c> option used by B<openssl x509>, B<openssl dhparam>,
|
|
B<openssl dsaparam>, and B<openssl ecparam>.
|
|
|
|
=head3 Other Changes
|
|
|
|
The output of Command line applications may have minor changes.
|
|
These are primarily changes in capitalisation and white space. However, in some
|
|
cases, there are additional differences.
|
|
For example, the DH parameters output from B<openssl dhparam> now lists 'P',
|
|
'Q', 'G' and 'pcounter' instead of 'prime', 'generator', 'subgroup order' and
|
|
'counter' respectively.
|
|
|
|
The B<openssl> commands that read keys, certificates, and CRLs now
|
|
automatically detect the PEM or DER format of the input files so it is not
|
|
necessary to explicitly specify the input format anymore. However if the
|
|
input format option is used the specified format will be required.
|
|
|
|
B<openssl speed> no longer uses low-level API calls.
|
|
This implies some of the performance numbers might not be comparable with the
|
|
previous releases due to higher overhead. This applies particularly to
|
|
measuring performance on smaller data chunks.
|
|
|
|
b<openssl dhparam>, B<openssl dsa>, B<openssl gendsa>, B<openssl dsaparam>,
|
|
B<openssl genrsa> and B<openssl rsa> have been modified to use PKEY APIs.
|
|
B<openssl genrsa> and B<openssl rsa> now write PKCS #8 keys by default.
|
|
|
|
=head3 Default settings
|
|
|
|
"SHA256" is now the default digest for TS query used by B<openssl ts>.
|
|
|
|
=head3 Deprecated apps
|
|
|
|
B<openssl rsautl> is deprecated, use B<openssl pkeyutl> instead.
|
|
B<openssl dhparam>, B<openssl dsa>, B<openssl gendsa>, B<openssl dsaparam>,
|
|
B<openssl genrsa>, B<openssl rsa>, B<openssl genrsa> and B<openssl rsa> are
|
|
now in maintenance mode and no new features will be added to them.
|
|
|
|
=head2 TLS Changes
|
|
|
|
=over 4
|
|
|
|
=item *
|
|
|
|
TLS 1.3 FFDHE key exchange support added
|
|
|
|
This uses DH safe prime named groups.
|
|
|
|
=item *
|
|
|
|
Support for fully "pluggable" TLSv1.3 groups.
|
|
|
|
This means that providers may supply their own group implementations (using
|
|
either the "key exchange" or the "key encapsulation" methods) which will
|
|
automatically be detected and used by libssl.
|
|
|
|
=item *
|
|
|
|
SSL and SSL_CTX options are now 64 bit instead of 32 bit.
|
|
|
|
The signatures of the functions to get and set options on SSL and
|
|
SSL_CTX objects changed from "unsigned long" to "uint64_t" type.
|
|
|
|
This may require source code changes. For example it is no longer possible
|
|
to use the B<SSL_OP_> macro values in preprocessor C<#if> conditions.
|
|
However it is still possible to test whether these macros are defined or not.
|
|
|
|
See L<SSL_CTX_get_options(3)>, L<SSL_CTX_set_options(3)>,
|
|
L<SSL_get_options(3)> and L<SSL_set_options(3)>.
|
|
|
|
=item *
|
|
|
|
SSL_set1_host() and SSL_add1_host() Changes
|
|
|
|
These functions now take IP literal addresses as well as actual hostnames.
|
|
|
|
=item *
|
|
|
|
Added SSL option SSL_OP_CLEANSE_PLAINTEXT
|
|
|
|
If the option is set, openssl cleanses (zeroizes) plaintext bytes from
|
|
internal buffers after delivering them to the application. Note,
|
|
the application is still responsible for cleansing other copies
|
|
(e.g.: data received by L<SSL_read(3)>).
|
|
|
|
=item *
|
|
|
|
Client-initiated renegotiation is disabled by default.
|
|
|
|
To allow it, use the B<-client_renegotiation> option,
|
|
the B<SSL_OP_ALLOW_CLIENT_RENEGOTIATION> flag, or the C<ClientRenegotiation>
|
|
config parameter as appropriate.
|
|
|
|
=item *
|
|
|
|
Secure renegotiation is now required by default for TLS connections
|
|
|
|
Support for RFC 5746 secure renegotiation is now required by default for
|
|
SSL or TLS connections to succeed. Applications that require the ability
|
|
to connect to legacy peers will need to explicitly set
|
|
SSL_OP_LEGACY_SERVER_CONNECT. Accordingly, SSL_OP_LEGACY_SERVER_CONNECT
|
|
is no longer set as part of SSL_OP_ALL.
|
|
|
|
=item *
|
|
|
|
Combining the Configure options no-ec and no-dh no longer disables TLSv1.3
|
|
|
|
Typically if OpenSSL has no EC or DH algorithms then it cannot support
|
|
connections with TLSv1.3. However OpenSSL now supports "pluggable" groups
|
|
through providers. Therefore third party providers may supply group
|
|
implementations even where there are no built-in ones. Attempting to create
|
|
TLS connections in such a build without also disabling TLSv1.3 at run time or
|
|
using third party provider groups may result in handshake failures. TLSv1.3
|
|
can be disabled at compile time using the "no-tls1_3" Configure option.
|
|
|
|
=item *
|
|
|
|
SSL_CTX_set_ciphersuites() and SSL_set_ciphersuites() changes.
|
|
|
|
The methods now ignore unknown ciphers.
|
|
|
|
=item *
|
|
|
|
Security callback change.
|
|
|
|
The security callback, which can be customised by application code, supports
|
|
the security operation SSL_SECOP_TMP_DH. This is defined to take an EVP_PKEY
|
|
in the "other" parameter. In most places this is what is passed. All these
|
|
places occur server side. However there was one client side call of this
|
|
security operation and it passed a DH object instead. This is incorrect
|
|
according to the definition of SSL_SECOP_TMP_DH, and is inconsistent with all
|
|
of the other locations. Therefore this client side call has been changed to
|
|
pass an EVP_PKEY instead.
|
|
|
|
=item *
|
|
|
|
New SSL option SSL_OP_IGNORE_UNEXPECTED_EOF
|
|
|
|
The SSL option SSL_OP_IGNORE_UNEXPECTED_EOF is introduced. If that option
|
|
is set, an unexpected EOF is ignored, it pretends a close notify was received
|
|
instead and so the returned error becomes SSL_ERROR_ZERO_RETURN.
|
|
|
|
=item *
|
|
|
|
The security strength of SHA1 and MD5 based signatures in TLS has been reduced.
|
|
|
|
This results in SSL 3, TLS 1.0, TLS 1.1 and DTLS 1.0 no longer
|
|
working at the default security level of 1 and instead requires security
|
|
level 0. The security level can be changed either using the cipher string
|
|
with C<@SECLEVEL>, or calling L<SSL_CTX_set_security_level(3)>. This also means
|
|
that where the signature algorithms extension is missing from a ClientHello
|
|
then the handshake will fail in TLS 1.2 at security level 1. This is because,
|
|
although this extension is optional, failing to provide one means that
|
|
OpenSSL will fallback to a default set of signature algorithms. This default
|
|
set requires the availability of SHA1.
|
|
|
|
=item *
|
|
|
|
X509 certificates signed using SHA1 are no longer allowed at security level 1 and above.
|
|
|
|
In TLS/SSL the default security level is 1. It can be set either using the cipher
|
|
string with C<@SECLEVEL>, or calling L<SSL_CTX_set_security_level(3)>. If the
|
|
leaf certificate is signed with SHA-1, a call to L<SSL_CTX_use_certificate(3)>
|
|
will fail if the security level is not lowered first.
|
|
Outside TLS/SSL, the default security level is -1 (effectively 0). It can
|
|
be set using L<X509_VERIFY_PARAM_set_auth_level(3)> or using the B<-auth_level>
|
|
options of the commands.
|
|
|
|
=back
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<fips_module(7)>
|
|
|
|
=head1 HISTORY
|
|
|
|
The migration guide was created for OpenSSL 3.0.
|
|
|
|
=head1 COPYRIGHT
|
|
|
|
Copyright 2021-2023 The OpenSSL Project Authors. All Rights Reserved.
|
|
|
|
Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
this file except in compliance with the License. You can obtain a copy
|
|
in the file LICENSE in the source distribution or at
|
|
L<https://www.openssl.org/source/license.html>.
|
|
|
|
=cut
|