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buffer.h

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  • Forked from Nettle / nettle
    Source project has a limited visibility.
    nettle-internal.c 2.37 KiB
    /* nettle-internal.c
     *
     * Things that are used only by the testsuite and benchmark, and
     * subject to change.
     */
    
    /* nettle, low-level cryptographics library
     *
     * Copyright (C) 2002 Niels Mller
     *  
     * The nettle library is free software; you can redistribute it and/or modify
     * it under the terms of the GNU Lesser General Public License as published by
     * the Free Software Foundation; either version 2.1 of the License, or (at your
     * option) any later version.
     * 
     * The nettle library 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 Lesser General Public
     * License for more details.
     * 
     * You should have received a copy of the GNU Lesser General Public License
     * along with the nettle library; see the file COPYING.LIB.  If not, write to
     * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
     * MA 02111-1307, USA.
     */
    
    #if HAVE_CONFIG_H
    # include "config.h"
    #endif
    
    #include <assert.h>
    #include <stdlib.h>
    
    #include "nettle-internal.h"
    #include "des.h"
    #include "blowfish.h"
    
    /* DES uses a different signature for the key set function.
     * And we have to adjust parity. */
    static void
    des_set_key_hack(void *c, unsigned length, const uint8_t *key)
    {
      struct des_ctx *ctx = c;
      uint8_t pkey[DES_KEY_SIZE];
      
      assert(length == DES_KEY_SIZE);
      des_fix_parity(DES_KEY_SIZE, pkey, key);
      if (!des_set_key(ctx, pkey))
        abort();
    }
    
    static void
    des3_set_key_hack(void *c, unsigned length, const uint8_t *key)
    {
      struct des3_ctx *ctx = c;
      uint8_t pkey[DES3_KEY_SIZE];
      
      assert(length == DES3_KEY_SIZE);
      des_fix_parity(DES3_KEY_SIZE, pkey, key);
      if (!des3_set_key(ctx, pkey))
        abort();
    }
    
    const struct nettle_cipher
    nettle_des = {
      "des", sizeof(struct des_ctx),
      DES_BLOCK_SIZE, DES_KEY_SIZE,
      des_set_key_hack, des_set_key_hack,
      (nettle_crypt_func) des_encrypt,
      (nettle_crypt_func) des_decrypt