OpenSSL

Cryptography and SSL/TLS Toolkit

EVP_MAC-KMAC

NAME

EVP_MAC-KMAC, EVP_MAC-KMAC256, EVP_MAC-KMAC256 - The KMAC EVP_MAC implementations

DESCRIPTION

Support for computing KMAC MACs through the EVP_MAC API.

Identity

These implementations are identified with one of these names and properties, to be used with EVP_MAC_fetch():

"KMAC128", "default=yes"
"KMAC256", "default=yes"

Supported parameters

The general description of these parameters can be found in "PARAMETERS" in EVP_MAC(3).

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_size(). The length of the "size" parameter should not exceed that of a size_t.

"key" (OSSL_MAC_PARAM_KEY) <octet string>
"custom" (OSSL_MAC_PARAM_CUSTOM) <octet string>
"size" (OSSL_MAC_PARAM_SIZE) <unsigned integer>
"xof" (OSSL_MAC_PARAM_XOF) <integer>

The "xof" parameter value is exptect to be 1 or 0. Use 1 to enable XOF mode. If XOF is enabled then the output len that is encoded as part of the input stream is set to zero.

SEE ALSO

EVP_MAC_CTX_get_params(3), EVP_MAC_CTX_set_params(3), "PARAMETERS" in EVP_MAC(3), OSSL_PARAM(3)

Copyright 2018-2019 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.