EVP_MAC-POLY1305 - Online Linux Manual PageSection : 7SSL
Updated : 2022-08-14
Source : 3.0.5
Note : OpenSSL
NAMEEVP_MAC−Poly1305 − The Poly1305 EVP_MAC implementation
DESCRIPTIONSupport for computing Poly1305 MACs through the EVP_MAC API.
IdentityThis implementation is identified with this name and properties, to be used with(): ``POLY1305'', ``provider=default'' 
Supported parametersThe general description of these parameters can be found in ​‟PARAMETERS” in EVP_MAC (3). The following parameter can be set with EVP_MAC_CTX_set_params(): ``key'' (OSSL_MAC_PARAM_KEY) <octet string> Sets the MAC key. Setting this parameter is identical to passing a key to EVP_MAC_init (3). The following parameters can be retrieved with ​EVP_MAC_CTX_get_params(): ``size'' (OSSL_MAC_PARAM_SIZE) <unsigned integer> Gets the MAC size. 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 unsigned int.
NOTESThe OpenSSL implementation of the Poly 1305 MAC corresponds to RFC 7539. It is critical to never reuse the key. The security implication noted in ​RFC 8439 applies equally to the OpenSSL implementation.
SEE ALSO​EVP_MAC_CTX_get_params (3), EVP_MAC_CTX_set_params (3), ​‟PARAMETERS” in EVP_MAC (3), OSSL_PARAM (3)
COPYRIGHTCopyright 2018−2021 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>. 0
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