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libnettle.map.in

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  • Forked from Nettle / nettle
    Source project has a limited visibility.
    pkcs1-rsa-digest.c 1.55 KiB
    /* pkcs1-rsa-digest.c
    
       Copyright (C) 2001, 2003, 2012 Niels Möller
    
       This file is part of GNU Nettle.
    
       GNU Nettle is free software: you can redistribute it and/or
       modify it under the terms of either:
    
         * the GNU Lesser General Public License as published by the Free
           Software Foundation; either version 3 of the License, or (at your
           option) any later version.
    
       or
    
         * the GNU General Public License as published by the Free
           Software Foundation; either version 2 of the License, or (at your
           option) any later version.
    
       or both in parallel, as here.
    
       GNU Nettle is distributed in the hope that it will be useful,
       but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
       General Public License for more details.
    
       You should have received copies of the GNU General Public License and
       the GNU Lesser General Public License along with this program.  If
       not, see http://www.gnu.org/licenses/.
    */
    
    #if HAVE_CONFIG_H
    # include "config.h"
    #endif
    
    #include "pkcs1.h"
    
    #include "bignum.h"
    #include "gmp-glue.h"
    #include "nettle-internal.h"
    
    int
    pkcs1_rsa_digest_encode(mpz_t m, size_t key_size,
    			size_t di_length, const uint8_t *digest_info)
    {
      TMP_GMP_DECL(em, uint8_t);
    
      TMP_GMP_ALLOC(em, key_size);
    
      if (_pkcs1_signature_prefix(key_size, em,
    			      di_length, digest_info, 0))
        {
          nettle_mpz_set_str_256_u(m, key_size, em);
          TMP_GMP_FREE(em);
          return 1;
        }
      else
        {
          TMP_GMP_FREE(em);
          return 0;
        }
    }