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41 results

pike_memory.h

Blame
    • Fredrik Hübinette (Hubbe)'s avatar
      624f57e9
      ::`[] should now work · 624f57e9
      Fredrik Hübinette (Hubbe) authored
      Rev: src/docode.c:1.45
      Rev: src/interpreter.h:1.2
      Rev: src/language.yacc:1.114
      Rev: src/lex.c:1.64
      Rev: src/object.c:1.60
      Rev: src/object.h:1.25
      Rev: src/pike_memory.h:1.11
      Rev: src/program.c:1.116
      624f57e9
      History
      ::`[] should now work
      Fredrik Hübinette (Hubbe) authored
      Rev: src/docode.c:1.45
      Rev: src/interpreter.h:1.2
      Rev: src/language.yacc:1.114
      Rev: src/lex.c:1.64
      Rev: src/object.c:1.60
      Rev: src/object.h:1.25
      Rev: src/pike_memory.h:1.11
      Rev: src/program.c:1.116
    des3.c 2.04 KiB
    /* des3.h
     *
     * Triple DES cipher. Three key encrypt-decrypt-encrypt.
     */
    
    /* nettle, low-level cryptographics library
     *
     * Copyright (C) 2001 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.
     */
    
    #include "des.h"
    
    /* It's possible to make some more general pipe construction, like the
     * lsh/src/cascade.c, but as in practice it's never used for anything
     * like triple DES, it's not worth the effort. */
    
    /* On success, returns 1 and sets ctx->status to DES_OK (zero). On
     * error, returns 0 and sets ctx->status accordingly. */
    int
    des3_set_key(struct des3_ctx *ctx, const uint8_t *key)
    {
      unsigned i;
      for (i = 0; i<3; i++, key += DES_KEY_SIZE)
        if (!des_set_key(&ctx->des[i], key))
          {
    	ctx->status = ctx->des[i].status;
    	return 0;
          }
      ctx->status = DES_OK;
      return 1;
    }
    
    void
    des3_encrypt(struct des3_ctx *ctx,
    	     unsigned length, uint8_t *dst,
    	     const uint8_t *src)
    {
      des_encrypt(&ctx->des[0],
    	      length, dst, src);
      des_decrypt(&ctx->des[1],
    	      length, dst, dst);
      des_encrypt(&ctx->des[2],
    	      length, dst, dst);
    }
    
    void
    des3_decrypt(struct des3_ctx *ctx,
    	    unsigned length, uint8_t *dst,
    	    const uint8_t *src)
    {
      des_decrypt(&ctx->des[2],
    	      length, dst, src);
      des_encrypt(&ctx->des[1],
    	      length, dst, dst);
      des_decrypt(&ctx->des[0],