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=pod
=head1 NAME
EVP_MAC-Siphash - The Siphash EVP_MAC implementation
=head1 DESCRIPTION
Support for computing Siphash MACs through the B<EVP_MAC> API.
=head2 Identity
This implementation is identified with this name and properties, to be
used with EVP_MAC_fetch():
=over 4
=item "SIPHASH", "provider=default"
=back
=head2 Supported parameters
The general description of these parameters can be found in
L<EVP_MAC(3)/PARAMETERS>.
All these parameters can be set with EVP_MAC_CTX_set_params().
Furthermore, the "size" parameter can be retrieved with
EVP_MAC_CTX_get_params(), or with EVP_MAC_CTX_get_mac_size().
The length of the "size" parameter should not exceed that of a B<size_t>.
=over 4
=item "key" (B<OSSL_MAC_PARAM_KEY>) <octet string>
=item "size" (B<OSSL_MAC_PARAM_SIZE>) <unsigned integer>
=back
=head1 SEE ALSO
L<EVP_MAC_CTX_get_params(3)>, L<EVP_MAC_CTX_set_params(3)>,
L<EVP_MAC(3)/PARAMETERS>, L<OSSL_PARAM(3)>
=head1 COPYRIGHT
Copyright 2018-2020 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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