Provided by: gnutls-doc_3.0.11+really2.12.14-5ubuntu3_all
gnutls_x509_privkey_sign_data - API function
#include <gnutls/x509.h> int gnutls_x509_privkey_sign_data(gnutls_x509_privkey_t key, gnutls_digest_algorithm_t digest, unsigned int flags, const gnutls_datum_t * data, void * signature, size_t * signature_size);
gnutls_x509_privkey_t key Holds the key gnutls_digest_algorithm_t digest should be MD5 or SHA1 unsigned int flags should be 0 for now const gnutls_datum_t * data holds the data to be signed void * signature will contain the signature size_t * signature_size holds the size of signature (and will be replaced by the new size)
This function will sign the given data using a signature algorithm supported by the private key. Signature algorithms are always used together with a hash functions. Different hash functions may be used for the RSA algorithm, but only SHA-1 for the DSA keys. If the buffer provided is not long enough to hold the output, then *signature_size is updated and GNUTLS_E_SHORT_MEMORY_BUFFER will be returned. Use gnutls_x509_crt_get_preferred_hash_algorithm() to determine the hash algorithm.
On success, GNUTLS_E_SUCCESS is returned, otherwise a negative error value.
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