CRYPTO_AEAD_AUTHSIZE(9)               Programming Interface               CRYPTO_AEAD_AUTHSIZE(9)



NAME
       crypto_aead_authsize - obtain maximum authentication data size

SYNOPSIS
       unsigned int crypto_aead_authsize(struct crypto_aead * tfm);

ARGUMENTS
       tfm
           cipher handle

DESCRIPTION
       The maximum size of the authentication data for the AEAD cipher referenced by the AEAD
       cipher handle is returned. The authentication data size may be zero if the cipher
       implements a hard-coded maximum.

       The authentication data may also be known as “tag value”.

RETURN
       authentication data size / tag size in bytes

AUTHORS
       Stephan Mueller <smueller AT chronox.de>
           Author.

       Marek Vasut <marek AT denx.de>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   CRYPTO_AEAD_AUTHSIZE(9)