gnutls_x509_crt_get_preferred_hash_algorithm(3) [centos man page]
gnutls_x509_crt_get_preferred_hash_algorithm(3) gnutls gnutls_x509_crt_get_preferred_hash_algorithm(3) NAME
gnutls_x509_crt_get_preferred_hash_algorithm - API function SYNOPSIS
#include <gnutls/compat.h> int gnutls_x509_crt_get_preferred_hash_algorithm(gnutls_x509_crt_t crt, gnutls_digest_algorithm_t * hash, unsigned int * mand); ARGUMENTS
gnutls_x509_crt_t crt Holds the certificate gnutls_digest_algorithm_t * hash The result of the call with the hash algorithm used for signature unsigned int * mand If non-zero it means that the algorithm MUST use this hash. May be NULL. DESCRIPTION
This function will read the certifcate and return the appropriate digest algorithm to use for signing with this certificate. Some certifi- cates (i.e. DSA might not be able to sign without the preferred algorithm). DEPRECATED
Please use gnutls_pubkey_get_preferred_hash_algorithm(). RETURNS
the 0 if the hash algorithm is found. A negative error code is returned on error. 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 royalty 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_x509_crt_get_preferred_hash_algorithm(3)
Check Out this Related Man Page
gnutls_x509_privkey_sign_data(3) gnutls gnutls_x509_privkey_sign_data(3) NAME
gnutls_x509_privkey_sign_data - API function SYNOPSIS
#include <gnutls/compat.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); ARGUMENTS
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) 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. RETURNS
On success, GNUTLS_E_SUCCESS (0) is returned, otherwise a negative error value. DEPRECATED
Use gnutls_privkey_sign_data(). 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 royalty 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_x509_privkey_sign_data(3)