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CentOS 7.0 - man page for gnutls_privkey_sign_hash (centos section 3)

gnutls_privkey_sign_hash(3)				gnutls				  gnutls_privkey_sign_hash(3)

NAME
gnutls_privkey_sign_hash - API function
SYNOPSIS
#include <gnutls/abstract.h> int gnutls_privkey_sign_hash(gnutls_privkey_t signer, gnutls_digest_algorithm_t hash_algo, unsigned int flags, const gnutls_datum_t * hash_data, gnutls_datum_t * signature);
ARGUMENTS
gnutls_privkey_t signer Holds the signer's key gnutls_digest_algorithm_t hash_algo The hash algorithm used unsigned int flags Zero or one of gnutls_privkey_flags_t const gnutls_datum_t * hash_data holds the data to be signed gnutls_datum_t * signature will contain newly allocated signature
DESCRIPTION
This function will sign the given hashed data using a signature algorithm supported by the private key. Signa- ture algorithms are always used together with a hash functions. Different hash functions may be used for the RSA algorithm, but only SHA-XXX for the DSA keys. You may use gnutls_pubkey_get_preferred_hash_algorithm() to determine the hash algorithm. Note that if GNUTLS_PRIVKEY_SIGN_FLAG_TLS1_RSA flag is specified this function will ignore hash_algo and per- form a raw PKCS1 signature.
RETURNS
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error value.
SINCE
2.12.0
REPORTING BUGS
Report bugs to <bug-gnutls@gnu.org>. General guidelines for reporting bugs: http://www.gnu.org/gethelp/ GnuTLS home page: http://www.gnu.org/software/gnutls/
COPYRIGHT
Copyright (C) 2012 Free Software Foundation, Inc.. Copying and distribution of this file, with or without modification, are permitted in any medium without roy- alty provided the copyright notice and this notice are preserved.
SEE ALSO
The full documentation for gnutls is maintained as a Texinfo manual. If the info and gnutls programs are properly installed at your site, the command info gnutls should give you access to the complete manual. As an alternative you may obtain the manual from: http://www.gnu.org/software/gnutls/manual/ gnutls 3.1.15 gnutls_privkey_sign_hash(3)


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