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- =pod
- =head1 NAME
- EVP_SIGNATURE-HMAC, EVP_SIGNATURE-Siphash, EVP_SIGNATURE-Poly1305,
- EVP_SIGNATURE-CMAC
- - The legacy B<EVP_PKEY> MAC signature implementations
- =head1 DESCRIPTION
- The algorithms described here have legacy support for creating MACs using
- L<EVP_DigestSignInit(3)> and related functions. This is not the preferred way of
- creating MACs. Instead you should use the newer L<EVP_MAC_init(3)> functions.
- This mechanism is provided for backwards compatibility with older versions of
- OpenSSL.
- The same signature parameters can be set using EVP_PKEY_CTX_set_params() as can
- be set via EVP_MAC_CTX_set_params() for the underlying EVP_MAC. See
- L<EVP_MAC-HMAC(7)>, L<EVP_MAC-Siphash(7)>, L<EVP_MAC-Poly1305(7)> and
- L<EVP_MAC-CMAC(7)> for details.
- See L<EVP_PKEY-HMAC(7)>, L<EVP_PKEY-Siphash(7)>, L<EVP_PKEY-Poly1305(7)> or
- L<EVP_PKEY-CMAC(7)> for details about parameters that are supported during the
- creation of an EVP_PKEY.
- =head1 SEE ALSO
- L<EVP_MAC_init(3)>,
- L<EVP_DigestSignInit(3)>,
- L<EVP_PKEY-HMAC(7)>,
- L<EVP_PKEY-Siphash(7)>,
- L<EVP_PKEY-Poly1305(7)>,
- L<EVP_PKEY-CMAC(7)>,
- L<EVP_MAC-HMAC(7)>,
- L<EVP_MAC-Siphash(7)>,
- L<EVP_MAC-Poly1305(7)>,
- L<EVP_MAC-CMAC(7)>,
- L<provider-signature(7)>,
- =head1 COPYRIGHT
- Copyright 2020 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
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