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EVP_MAC-GMAC(7)			    OpenSSL		       EVP_MAC-GMAC(7)

NAME
       EVP_MAC-GMAC - The GMAC EVP_MAC implementation

DESCRIPTION
       Support for computing GMAC MACs through the EVP_MAC API.

   Identity
       This implementation is identified with this name	and properties,	to be
       used with EVP_MAC_fetch():

       "GMAC", "provider=default" or "provider=fips"

   Supported parameters
       The 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>
       "iv" (OSSL_MAC_PARAM_IV)	<octet string>
       "cipher"	(OSSL_MAC_PARAM_CIPHER)	<UTF8 string>
       "properties" (OSSL_MAC_PARAM_PROPERTIES)	<UTF8 string>

       The following parameters	can be retrieved with
       EVP_MAC_CTX_get_params():

       "size" (OSSL_MAC_PARAM_SIZE) <unsigned integer>

       The "size" parameter can	also be	retrieved with EVP_MAC_size().	The
       length of the "size" parameter is equal to that of an unsigned int.

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

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
       <https://www.openssl.org/source/license.html>.

3.0.0-alpha6			  2020-08-06		       EVP_MAC-GMAC(7)

NAME | DESCRIPTION | SEE ALSO | COPYRIGHT

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