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gnutls_pubkey_get_preferred_hash_algorithm(3) gnutlsgnutls_pubkey_get_preferred_hash_algorithm(3)

       gnutls_pubkey_get_preferred_hash_algorithm - API function

       #include <gnutls/abstract.h>

       int  gnutls_pubkey_get_preferred_hash_algorithm(gnutls_pubkey_t	key,  gnutls_digest_algo-
       rithm_t *					     hash, unsigned int * mand);

       gnutls_pubkey_t key
		   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 <bug-gnutls@gnu.org>.
       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

	      info gnutls

       should  give you access to the complete manual.	As an alternative you may obtain the man-
       ual from:


gnutls					      3.1.15gnutls_pubkey_get_preferred_hash_algorithm(3)
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