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b808665265
Renamed some values in core_names i.e Some DH specific names were changed to use DH instead of FFC. Added some strings values related to RSA keys. Moved set_params related docs out of EVP_PKEY_CTX_ctrl.pod into its own file. Updated Keyexchange and signature code and docs. Moved some common DSA/DH docs into a shared EVP_PKEY-FFC.pod. Moved Ed25519.pod into EVP_SIGNATURE-ED25519.pod and reworked it. Added some usage examples. As a result of the usage examples the following change was also made: ec allows OSSL_PKEY_PARAM_USE_COFACTOR_ECDH as a settable gen parameter. Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/11610)
111 lines
2.7 KiB
Plaintext
111 lines
2.7 KiB
Plaintext
=pod
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=head1 NAME
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EVP_PKEY-X25519, EVP_PKEY-X448, EVP_PKEY-ED25519, EVP_PKEY-ED448,
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EVP_KEYMGMT-X25519, EVP_KEYMGMT-X448, EVP_KEYMGMT-ED25519, EVP_KEYMGMT-ED448
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- EVP_PKEY X25519, X448, ED25519 and ED448 keytype and algorithm support
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=head1 DESCRIPTION
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The B<X25519>, B<X448>, B<ED25519> and B<ED448> keytypes are
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implemented in OpenSSL's default and FIPS providers. These implementations
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support the associated key, containing the public key I<pub> and the
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private key I<priv>.
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In the FIPS provider they are non-approved algorithms and do not have the
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"fips=yes" property set.
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No additional parameters can be set during key generation.
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=head2 Common X25519, X448, ED25519 and ED448 parameters
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In addition to the common parameters that all keytypes should support (see
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L<provider-keymgmt(7)/Common parameters>), the implementation of these keytypes
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support the following.
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=over 4
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=item "pub" (B<OSSL_PKEY_PARAM_PUB_KEY>) <octet string>
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The public key value.
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=item "priv" (B<OSSL_PKEY_PARAM_PRIV_KEY>) <octet string>
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The private key value.
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=back
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=head2 ED25519 and ED448 parameters
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=over 4
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=item "mandatory-digest" (B<OSSL_PKEY_PARAM_MANDATORY_DIGEST>) <utf8 string>
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The empty string, signifying that no digest may be specified.
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=back
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=head1 CONFORMING TO
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=over 4
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=item RFC 8032
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=item RFC 8410
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=back
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=head1 EXAMPLES
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An B<EVP_PKEY> context can be obtained by calling:
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EVP_PKEY_CTX *pctx =
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EVP_PKEY_CTX_new_from_name(NULL, "X25519", NULL);
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EVP_PKEY_CTX *pctx =
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EVP_PKEY_CTX_new_from_name(NULL, "X448", NULL);
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EVP_PKEY_CTX *pctx =
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EVP_PKEY_CTX_new_from_name(NULL, "ED25519", NULL);
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EVP_PKEY_CTX *pctx =
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EVP_PKEY_CTX_new_from_name(NULL, "ED448", NULL);
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An B<ED25519> key can be generated like this:
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EVP_PKEY *pkey = NULL;
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EVP_PKEY_CTX *pctx =
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EVP_PKEY_CTX_new_from_name(NULL, "ED25519", NULL);
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EVP_PKEY_keygen_init(pctx);
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EVP_PKEY_gen(pctx, &pkey);
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EVP_PKEY_CTX_free(pctx);
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An B<X25519> key can be generated in a similar way:
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EVP_PKEY *pkey = NULL;
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EVP_PKEY_CTX *pctx =
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EVP_PKEY_CTX_new_from_name(NULL, "X25519", NULL);
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EVP_PKEY_keygen_init(pctx);
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EVP_PKEY_gen(pctx, &pkey);
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EVP_PKEY_CTX_free(pctx);
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=head1 SEE ALSO
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L<EVP_KEYMGMT(3)>, L<EVP_PKEY(3)>, L<provider-keymgmt(7)>,
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L<EVP_KEYEXCH-X25519(7)>, L<EVP_KEYEXCH-X448(7)>,
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L<EVP_SIGNATURE-ED25519(7)>, L<EVP_SIGNATURE-ED448(7)>
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=head1 COPYRIGHT
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Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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