1EVP_MAC-POLY1305(7ossl)             OpenSSL            EVP_MAC-POLY1305(7ossl)
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NAME

6       EVP_MAC-Poly1305 - The Poly1305 EVP_MAC implementation
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DESCRIPTION

9       Support for computing Poly1305 MACs through the EVP_MAC API.
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11   Identity
12       This implementation is identified with this name and properties, to be
13       used with EVP_MAC_fetch():
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15       "POLY1305", "provider=default"
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17   Supported parameters
18       The general description of these parameters can be found in
19       "PARAMETERS" in EVP_MAC(3).
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21       The following parameter can be set with EVP_MAC_CTX_set_params():
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23       "key" (OSSL_MAC_PARAM_KEY) <octet string>
24           Sets the MAC key.  Setting this parameter is identical to passing a
25           key to EVP_MAC_init(3).
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27       The following parameters can be retrieved with
28       EVP_MAC_CTX_get_params():
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30       "size" (OSSL_MAC_PARAM_SIZE) <unsigned integer>
31           Gets the MAC size.
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33       The "size" parameter can also be retrieved with with
34       EVP_MAC_CTX_get_mac_size().  The length of the "size" parameter should
35       not exceed that of an unsigned int.
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NOTES

38       The OpenSSL implementation of the Poly 1305 MAC corresponds to RFC
39       7539.
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41       It is critical to never reuse the key.  The security implication noted
42       in RFC 8439 applies equally to the OpenSSL implementation.
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SEE ALSO

45       EVP_MAC_CTX_get_params(3), EVP_MAC_CTX_set_params(3), "PARAMETERS" in
46       EVP_MAC(3), OSSL_PARAM(3)
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49       Copyright 2018-2021 The OpenSSL Project Authors. All Rights Reserved.
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51       Licensed under the Apache License 2.0 (the "License").  You may not use
52       this file except in compliance with the License.  You can obtain a copy
53       in the file LICENSE in the source distribution or at
54       <https://www.openssl.org/source/license.html>.
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583.0.9                             2023-07-27           EVP_MAC-POLY1305(7ossl)
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