2019-08-28 15:13:21 +08:00
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=pod
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=head1 NAME
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EVP_MAC-Poly1305 - The Poly1305 EVP_MAC implementation
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=head1 DESCRIPTION
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Support for computing Poly1305 MACs through the B<EVP_MAC> API.
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=head2 Identity
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This implementation is identified with this name and properties, to be
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used with EVP_MAC_fetch():
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=over 4
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2020-02-15 06:49:26 +08:00
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=item "POLY1305", "provider=default"
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2019-08-28 15:13:21 +08:00
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=back
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=head2 Supported parameters
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The general description of these parameters can be found in
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2019-09-17 06:46:49 +08:00
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L<EVP_MAC(3)/PARAMETERS>.
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2019-08-28 15:13:21 +08:00
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2020-06-18 16:26:22 +08:00
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The following parameter can be set with EVP_MAC_CTX_set_params():
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2019-08-28 15:13:21 +08:00
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=over 4
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2019-09-10 16:05:57 +08:00
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=item "key" (B<OSSL_MAC_PARAM_KEY>) <octet string>
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2019-08-28 15:13:21 +08:00
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2021-03-02 01:46:20 +08:00
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Sets the MAC key.
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Setting this parameter is identical to passing a I<key> to L<EVP_MAC_init(3)>.
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2019-08-28 15:13:21 +08:00
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=back
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The following parameters can be retrieved with
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EVP_MAC_CTX_get_params():
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2019-08-28 15:13:21 +08:00
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=over 4
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2019-09-10 16:05:57 +08:00
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=item "size" (B<OSSL_MAC_PARAM_SIZE>) <unsigned integer>
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2019-08-28 15:13:21 +08:00
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2021-03-02 01:46:20 +08:00
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Gets the MAC size.
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2019-08-28 15:13:21 +08:00
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=back
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2020-10-13 12:22:17 +08:00
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The "size" parameter can also be retrieved with with EVP_MAC_CTX_get_mac_size().
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2019-09-25 18:27:36 +08:00
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The length of the "size" parameter should not exceed that of an B<unsigned int>.
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2019-08-28 15:13:21 +08:00
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=head1 SEE ALSO
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2020-06-18 16:26:22 +08:00
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L<EVP_MAC_CTX_get_params(3)>, L<EVP_MAC_CTX_set_params(3)>,
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2019-09-17 06:46:49 +08:00
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L<EVP_MAC(3)/PARAMETERS>, L<OSSL_PARAM(3)>
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2019-08-28 15:13:21 +08:00
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=head1 COPYRIGHT
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2020-04-23 20:55:52 +08:00
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Copyright 2018-2020 The OpenSSL Project Authors. All Rights Reserved.
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2019-08-28 15:13:21 +08:00
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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