| 1 | =pod
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| 2 |
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| 3 | =head1 NAME
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| 4 |
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| 5 | EVP_SIGNATURE-HMAC, EVP_SIGNATURE-Siphash, EVP_SIGNATURE-Poly1305,
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| 6 | EVP_SIGNATURE-CMAC
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| 7 | - The legacy B<EVP_PKEY> MAC signature implementations
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| 8 |
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| 9 | =head1 DESCRIPTION
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| 10 |
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| 11 | The algorithms described here have legacy support for creating MACs using
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| 12 | L<EVP_DigestSignInit(3)> and related functions. This is not the preferred way of
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| 13 | creating MACs. Instead you should use the newer L<EVP_MAC_init(3)> functions.
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| 14 | This mechanism is provided for backwards compatibility with older versions of
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| 15 | OpenSSL.
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| 16 |
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| 17 | The same signature parameters can be set using EVP_PKEY_CTX_set_params() as can
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| 18 | be set via EVP_MAC_CTX_set_params() for the underlying EVP_MAC. See
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| 19 | L<EVP_MAC-HMAC(7)>, L<EVP_MAC-Siphash(7)>, L<EVP_MAC-Poly1305(7)> and
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| 20 | L<EVP_MAC-CMAC(7)> for details.
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| 21 |
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| 22 | See L<EVP_PKEY-HMAC(7)>, L<EVP_PKEY-Siphash(7)>, L<EVP_PKEY-Poly1305(7)> or
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| 23 | L<EVP_PKEY-CMAC(7)> for details about parameters that are supported during the
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| 24 | creation of an EVP_PKEY.
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| 25 |
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| 26 | =head1 SEE ALSO
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| 27 |
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| 28 | L<EVP_MAC_init(3)>,
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| 29 | L<EVP_DigestSignInit(3)>,
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| 30 | L<EVP_PKEY-HMAC(7)>,
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| 31 | L<EVP_PKEY-Siphash(7)>,
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| 32 | L<EVP_PKEY-Poly1305(7)>,
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| 33 | L<EVP_PKEY-CMAC(7)>,
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| 34 | L<EVP_MAC-HMAC(7)>,
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| 35 | L<EVP_MAC-Siphash(7)>,
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| 36 | L<EVP_MAC-Poly1305(7)>,
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| 37 | L<EVP_MAC-CMAC(7)>,
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| 38 | L<provider-signature(7)>,
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| 39 |
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| 40 | =head1 COPYRIGHT
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| 41 |
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| 42 | Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
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| 43 |
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| 44 | Licensed under the Apache License 2.0 (the "License"). You may not use
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| 45 | this file except in compliance with the License. You can obtain a copy
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| 46 | in the file LICENSE in the source distribution or at
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| 47 | L<https://www.openssl.org/source/license.html>.
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| 48 |
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| 49 | =cut
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