gnutls_decode_ber_digest_info(3) gnutls gnutls_decode_ber_digest_info(3)

gnutls_decode_ber_digest_info - API function

#include <gnutls/crypto.h>

int gnutls_decode_ber_digest_info(const gnutls_datum_t * info, gnutls_digest_algorithm_t * hash, unsigned char * digest, unsigned int * digest_size);

an RSA BER encoded DigestInfo structure
will contain the hash algorithm of the structure
will contain the hash output of the structure
will contain the hash size of the structure; initially must hold the maximum size of digest

This function will parse an RSA PKCS1 1.5 DigestInfo structure and report the hash algorithm used as well as the digest data.

On success, GNUTLS_E_SUCCESS (0) is returned, otherwise an error code is returned.


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3.8.5 gnutls