gnutls_crypto_register_mac(3) gnutls gnutls_crypto_register_mac(3)

gnutls_crypto_register_mac - API function

#include <gnutls/crypto.h>

int gnutls_crypto_register_mac(gnutls_mac_algorithm_t algorithm, int priority, gnutls_mac_init_func init, gnutls_mac_setkey_func setkey, gnutls_mac_setnonce_func setnonce, gnutls_mac_hash_func hash, gnutls_mac_output_func output, gnutls_mac_deinit_func deinit, gnutls_mac_fast_func hash_fast);

is the gnutls MAC identifier
is the priority of the algorithm
A function which initializes the MAC
A function which sets the key of the MAC
A function which sets the nonce for the mac (may be NULL for common MAC algorithms)
Perform the hash operation
Provide the output of the MAC
A function which deinitializes the MAC
Perform the MAC operation in one go

This function will register a MAC algorithm to be used by gnutls. Any algorithm registered will override the included algorithms and by convention kernel implemented algorithms have priority of 90 and CPU-assisted of 80. The algorithm with the lowest priority will be used by gnutls.

since 3.7.0 it is no longer possible to override cipher implementation

GNUTLS_E_SUCCESS on success, otherwise a negative error code.


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3.8.5 gnutls