Skip to content
Snippets Groups Projects
Select Git revision
  • 9b4e8b4d450349483ae2ba3a3a1c4b45fa2c68e4
  • master default protected
  • streebog
  • gost28147
  • master-updates
  • ed448
  • shake256
  • curve448
  • ecc-sqrt
  • gosthash94cp
  • cmac64
  • block16-refactor
  • siv-mode
  • cmac-layout
  • delete-des-compat
  • delete-rsa_blind
  • aes-struct-layout
  • release-3.4-fixes
  • struct-layout
  • attribute-deprecated
  • rename-data-symbols
  • nettle_3.5.1_release_20190627
  • nettle_3.5_release_20190626
  • nettle_3.5rc1
  • nettle_3.4.1_release_20181204
  • nettle_3.4.1rc1
  • nettle_3.4_release_20171119
  • nettle_3.4rc2
  • nettle_3.4rc1
  • nettle_3.3_release_20161001
  • nettle_3.2_release_20160128
  • nettle_3.1.1_release_20150424
  • nettle_3.1_release_20150407
  • nettle_3.1rc3
  • nettle_3.1rc2
  • nettle_3.1rc1
  • nettle_3.0_release_20140607
  • nettle_2.7.1_release_20130528
  • nettle_2.7_release_20130424
  • nettle_2.6_release_20130116
  • nettle_2.5_release_20120707
41 results

serpent.h

Blame
  • Forked from Nettle / nettle
    Source project has a limited visibility.
    • Niels Möller's avatar
      ef3668b2
      *** empty log message *** · ef3668b2
      Niels Möller authored
      Rev: src/nettle/ChangeLog:1.10
      Rev: src/nettle/aes.h:1.4
      Rev: src/nettle/arcfour.h:1.3
      Rev: src/nettle/blowfish.h:1.7
      Rev: src/nettle/cast128.h:1.3
      Rev: src/nettle/des.h:1.4
      Rev: src/nettle/md5.h:1.3
      Rev: src/nettle/memxor.h:1.2
      Rev: src/nettle/serpent.h:1.5
      Rev: src/nettle/sha1.h:1.3
      Rev: src/nettle/twofish.h:1.4
      ef3668b2
      History
      *** empty log message ***
      Niels Möller authored
      Rev: src/nettle/ChangeLog:1.10
      Rev: src/nettle/aes.h:1.4
      Rev: src/nettle/arcfour.h:1.3
      Rev: src/nettle/blowfish.h:1.7
      Rev: src/nettle/cast128.h:1.3
      Rev: src/nettle/des.h:1.4
      Rev: src/nettle/md5.h:1.3
      Rev: src/nettle/memxor.h:1.2
      Rev: src/nettle/serpent.h:1.5
      Rev: src/nettle/sha1.h:1.3
      Rev: src/nettle/twofish.h:1.4
    arcfour.c 1.77 KiB
    /* arcfour.c
    
       The arcfour/rc4 stream cipher.
    
       Copyright (C) 2001, 2014 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 <assert.h>
    
    #include "arcfour.h"
    
    #define SWAP(a,b) do { int _t = a; a = b; b = _t; } while(0)
    
    void
    arcfour_set_key(struct arcfour_ctx *ctx,
    		size_t length, const uint8_t *key)
    {
      unsigned i, j, k;
      
      assert(length >= ARCFOUR_MIN_KEY_SIZE);
      assert(length <= ARCFOUR_MAX_KEY_SIZE);
    
      /* Initialize context */
      for (i = 0; i<256; i++)
        ctx->S[i] = i;
    
      for (i = j = k = 0; i<256; i++)
        {
          j += ctx->S[i] + key[k]; j &= 0xff;
          SWAP(ctx->S[i], ctx->S[j]);
          /* Repeat key as needed */
          k = (k + 1) % length;
        }
      ctx->i = ctx->j = 0;
    }
    
    void
    arcfour128_set_key(struct arcfour_ctx *ctx, const uint8_t *key)
    {
      arcfour_set_key (ctx, ARCFOUR128_KEY_SIZE, key);
    }