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>.