CentOS 7.0 - man page for gnutls_pubkey_get_preferred_hash_algorithm (centos section 3)
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gnutls_pubkey_get_preferred_hash_algorithm - API function
int gnutls_pubkey_get_preferred_hash_algorithm(gnutls_pubkey_t key, gnutls_digest_algo-
rithm_t * hash, unsigned int * mand);
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.
This function will read the certifcate and return the appropriate digest algorithm to use
for signing with this certificate. Some certificates (i.e. DSA might not be able to sign
without the preferred algorithm).
To get the signature algorithm instead of just the hash use gnutls_pk_to_sign() with the
algorithm of the certificate/key and the provided hash .
the 0 if the hash algorithm is found. A negative error code is returned on error.
Report bugs to <email@example.com>.
General guidelines for reporting bugs: http://www.gnu.org/gethelp/
GnuTLS home page: http://www.gnu.org/software/gnutls/
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.
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
should give you access to the complete manual. As an alternative you may obtain the man-
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