openssl/doc/man7/EVP_MAC-Poly1305.pod
Richard Levitte 8593ff00cc DOCS: Fix provider-mac.pod and the docs of our implementations
The idea being that doc/man7/provider-mac.pod is for provider authors,
while provider users find the documentation for each implementation in
doc/man7/EVP_MAC-*.pod, the documentation of parameters wasn't quite
aligned.  This change re-arranges the parameter documentation to be
more aligned with this idea.

Reviewed-by: Shane Lontis <shane.lontis@oracle.com>
(Merged from https://github.com/openssl/openssl/pull/14380)
2021-03-03 14:08:00 +01:00

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=pod
=head1 NAME
EVP_MAC-Poly1305 - The Poly1305 EVP_MAC implementation
=head1 DESCRIPTION
Support for computing Poly1305 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 "POLY1305", "provider=default"
=back
=head2 Supported parameters
The general description of these parameters can be found in
L<EVP_MAC(3)/PARAMETERS>.
The following parameter can be set with EVP_MAC_CTX_set_params():
=over 4
=item "key" (B<OSSL_MAC_PARAM_KEY>) <octet string>
Sets the MAC key.
Setting this parameter is identical to passing a I<key> to L<EVP_MAC_init(3)>.
=back
The following parameters can be retrieved with
EVP_MAC_CTX_get_params():
=over 4
=item "size" (B<OSSL_MAC_PARAM_SIZE>) <unsigned integer>
Gets the MAC size.
=back
The "size" parameter can also be retrieved with with EVP_MAC_CTX_get_mac_size().
The length of the "size" parameter should not exceed that of an B<unsigned int>.
=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