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gnutls_x509_crq_get_key_id(3)		      gnutls		    gnutls_x509_crq_get_key_id(3)

       gnutls_x509_crq_get_key_id - API function

       #include <gnutls/x509.h>

       int  gnutls_x509_crq_get_key_id(gnutls_x509_crq_t crq, unsigned int flags, unsigned char *
       output_data, size_t * output_data_size);

       gnutls_x509_crq_t crq
		   a certificate of type gnutls_x509_crq_t

       unsigned int flags
		   should be 0 for now

       unsigned char * output_data
		   will contain the key ID

       size_t * output_data_size
		   holds the size of output_data (and will be replaced	by  the  actual  size  of

       This  function will return a unique ID that depends on the public key parameters.  This ID
       can be used in checking whether a certificate corresponds to the given private key.

       If the buffer provided is not long enough to hold the output, then *  output_data_size  is
       updated	and GNUTLS_E_SHORT_MEMORY_BUFFER will be returned.  The output will normally be a
       SHA-1 hash output, which is 20 bytes.

       In case of failure a negative error code will be returned, and 0 on success.


       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					      3.1.15		    gnutls_x509_crq_get_key_id(3)
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