gnutls_srp_set_server_credentials_function man page on Archlinux

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       gnutls_srp_set_server_credentials_function - API function

       #include <gnutls/gnutls.h>

       void  gnutls_srp_set_server_credentials_function(gnutls_srp_server_cre‐
       dentials_t	      cred,	gnutls_srp_server_credentials_function
       * func);

       gnutls_srp_server_credentials_t	       cred
		   is a gnutls_srp_server_credentials_t structure.

       gnutls_srp_server_credentials_function	      * func
		   is the callback function

       This  function can be used to set a callback to retrieve the user's SRP
       credentials.  The callback's function form is:

       int (*callback)(gnutls_session_t, const char* username, gnutls_datum_t*
       salt,	 gnutls_datum_t	   *verifier,	 gnutls_datum_t*    generator,
       gnutls_datum_t* prime);

	username contains the actual username.	The  salt ,  verifier ,	  gen‐
       erator and  prime must be filled in using the gnutls_malloc(). For con‐
       venience	 prime and  generator may also be one of the static parameters
       defined in gnutls.h.

       In  order to prevent attackers from guessing valid usernames, if a user
       does not exist, g and n values should  be  filled  in  using  a	random
       user's  parameters.  In	that case the callback must return the special
       value (1).  See gnutls_srp_set_server_fake_salt_seed too.  If  this  is
       not  required  for  your application, return a negative number from the
       callback to abort the handshake.

       The callback function will only be  called  once	 per  handshake.   The
       callback	 function  should  return  0 on success, while -1 indicates an

       Report bugs to <>.
       Home page:

       Copyright © 2001-2014 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 /usr/share/doc/gnutls/ directory does not contain the HTML form

gnutls				 gnutls_srp_set_server_credentials_function(3)

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