gnutls_x509_privkey_sign_data - API function

Arguments

gnutls_x509_privkey_t key a key gnutls_digest_algorithm_t digest should be a digest algorithm 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)

Copyright

Copyright © 2001-2023 Free Software Foundation, Inc., and others. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.

Description

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.

Name

gnutls_x509_privkey_sign_data - API function

Reporting Bugs

Report bugs to <bugs@gnutls.org>. Home page: https://www.gnutls.org

Returns

On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error value.

Synopsis

#include<gnutls/x509.h>intgnutls_x509_privkey_sign_data(gnutls_x509_privkey_tkey,gnutls_digest_algorithm_tdigest,unsignedintflags,constgnutls_datum_t*data,void*signature,size_t*signature_size);