Updated: 2022/Sep/29

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EVP_SIGNATURE-HMAC(7)               OpenSSL              EVP_SIGNATURE-HMAC(7)



NAME
       EVP_SIGNATURE-HMAC, EVP_SIGNATURE-Siphash, EVP_SIGNATURE-Poly1305,
       EVP_SIGNATURE-CMAC - The legacy EVP_PKEY MAC signature implementations

DESCRIPTION
       The algorithms described here have legacy support for creating MACs
       using EVP_DigestSignInit(3) and related functions. This is not the
       preferred way of creating MACs. Instead you should use the newer
       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 EVP_MAC-HMAC(7), EVP_MAC-Siphash(7),
       EVP_MAC-Poly1305(7) and 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.

SEE ALSO
       EVP_MAC_init(3), EVP_DigestSignInit(3), EVP_PKEY-HMAC(7),
       EVP_PKEY-Siphash(7), EVP_PKEY-Poly1305(7), EVP_PKEY-CMAC(7),
       EVP_MAC-HMAC(7), EVP_MAC-Siphash(7), EVP_MAC-Poly1305(7),
       EVP_MAC-CMAC(7), provider-signature(7),

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
       <https://www.openssl.org/source/license.html>.



3.0.12                            2023-05-07             EVP_SIGNATURE-HMAC(7)