If you decrypt a random input using RSAES-PKCS-v1_5, then there is a
non-negligible chance that the result will look like a valid plaintext
(that is why RSAES-PKCS-v1_5 shouldn't be used anymore). This was the
cause of an intermittent failure in a test that did a cms-encrypt
operation targetting multiple recipients.
The failure happened during key-only decrypt. The recipient decrypts
every RSA ciphertext -- only one is supposed to decrypt successfully,
which would reveal the right content-key. Occassionally, more than
one decrypted successfully.
Update the test by specifying the recipient cert in the decrypt op
(this avoids looping over all RSA ciphertexts).
Add a new test to get coverage for key-only decrypt, but use RSA-OAEP
during the encrypt op.
Fixes https://github.com/openssl/project/issues/380
Testing:
$ make TESTS='test_cms' test
Reviewed-by: Neil Horman <nhorman@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/23055)
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
(Merged from https://github.com/openssl/openssl/pull/19076)
Also remove inconsistent key usages from non-RSA certs.
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
(Merged from https://github.com/openssl/openssl/pull/19076)
FIPS 186-4 section 5 "The RSA Digital Signature Algorithm", subsection
5.5 "PKCS #1" says: "For RSASSA-PSS […] the length (in bytes) of the
salt (sLen) shall satisfy 0 <= sLen <= hLen, where hLen is the length of
the hash function output block (in bytes)."
Introduce a new option RSA_PSS_SALTLEN_AUTO_DIGEST_MAX and make it the
default. The new value will behave like RSA_PSS_SALTLEN_AUTO, but will
not use more than the digest length when signing, so that FIPS 186-4 is
not violated. This value has two advantages when compared with
RSA_PSS_SALTLEN_DIGEST: (1) It will continue to do auto-detection when
verifying signatures for maximum compatibility, where
RSA_PSS_SALTLEN_DIGEST would fail for other digest sizes. (2) It will
work for combinations where the maximum salt length is smaller than the
digest size, which typically happens with large digest sizes (e.g.,
SHA-512) and small RSA keys.
J.-S. Coron shows in "Optimal Security Proofs for PSS and Other
Signature Schemes. Advances in Cryptology – Eurocrypt 2002, volume 2332
of Lecture Notes in Computer Science, pp. 272 – 287. Springer Verlag,
2002." that longer salts than the output size of modern hash functions
do not increase security: "For example,for an application in which at
most one billion signatures will be generated, k0 = 30 bits of random
salt are actually sufficient to guarantee the same level of security as
RSA, and taking a larger salt does not increase the security level."
Signed-off-by: Clemens Lang <cllang@redhat.com>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19724)
The tests only cover the correct handling of the codesigning purpose in the certificates
in the context of the cms command line tool.
The interpretation of the certificate purpose is tested in the context of the "verify"
app. The correct handling of the cms objects is tested by other tests in 80-test_cms.t.
Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18567)
Namely the smime certificates used in test_cms and the
SM2 certificates will expire soon and affect tests.
Fixes#15179
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18467)
The change to a more configuration based approach to enable FIPS mode
operation highlights a shortcoming in the default should do something
approach we've taken for bad configuration files.
Currently, a bad configuration file will be automatically loaded and
once the badness is detected, it will silently stop processing the
configuration and continue normal operations. This is good for remote
servers, allowing changes to be made without bricking things. It's bad
when a user thinks they've configured what they want but got something
wrong and it still appears to work.
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
(Merged from https://github.com/openssl/openssl/pull/16171)
OpenSSL 1.1.1 introduced a new CSPRNG with an improved seeding
mechanism, which makes it dispensable to define a RANDFILE for
saving and restoring randomness. This commit removes the RANDFILE
declarations from our own configuration files and adds documentation
that this option is not needed anymore and retained mainly for
compatibility reasons.
Fixes#10433
Reviewed-by: Paul Dale <paul.dale@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/10436)
Add copyright to missing assembler files.
Add copyrights to missing test/* files.
Add copyrights
Various source and misc files.
Reviewed-by: Richard Levitte <levitte@openssl.org>
