DES_3DES.zip_3des_DES 3DES_des

/** * @file des.c * @brief DES (Data Encryption Standard) * * @section License * * Copyright (C) 2010-2016 Oryx Embedded SARL. All rights reserved. * * This file is part of CycloneCrypto Open. * * This program is free software; you can redistribute it and/or * modify it under the terms of 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. * * This program 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 a copy of the GNU General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * @section Description * * DES is an encryption algorithm designed to encipher and decipher blocks of * 64 bits under control of a 64-bit key. Refer to FIPS 46-3 for more details * * @author Oryx Embedded SARL (www.oryx-embedded.com) * @version 1.7.2 **/ //! Switch to the appropriate trace level #define TRACE_LEVEL CRYPTO_TRACE_LEVEL //! Dependencies #include <string.h> #include <stdint.h> //! #include "crypto.h" #include "des.h" #include "endian.h" //! Rotate left operation #define ROL28(a, n) ((((a) << (n)) | ((a) >> (28 - (n)))) & 0x0FFFFFFF) //! Initial permutation #define DES_IP(left, right) \ { \ temp = ((left >> 4) ^ right) & 0x0F0F0F0F; \ right ^= temp; \ left ^= temp << 4; \ temp = ((left >> 16) ^ right) & 0x0000FFFF; \ right ^= temp; \ left ^= temp << 16; \ temp = ((right >> 2) ^ left) & 0x33333333; \ left ^= temp; \ right ^= temp << 2; \ temp = ((right >> 8) ^ left) & 0x00FF00FF; \ left ^= temp; \ right ^= temp << 8; \ temp = ((left >> 1) ^ right) & 0x55555555; \ right ^= temp; \ left ^= temp << 1; \ left = ROL32(left, 1); \ right = ROL32(right, 1); \ } //! Final permutation #define DES_FP(left, right) \ { \ left = ROR32(left, 1); \ right = ROR32(right, 1); \ temp = ((left >> 1) ^ right) & 0x55555555; \ right ^= temp; \ left ^= temp << 1; \ temp = ((right >> 8) ^ left) & 0x00FF00FF; \ left ^= temp; \ right ^= temp << 8; \ temp = ((right >> 2) ^ left) & 0x33333333; \ left ^= temp; \ right ^= temp << 2; \ temp = ((left >> 16) ^ right) & 0x0000FFFF; \ right ^= temp; \ left ^= temp << 16; \ temp = ((left >> 4) ^ right) & 0x0F0F0F0F; \ right ^= temp; \ left ^= temp << 4; \ } //! DES round #define DES_ROUND(left, right, ks) \ { \ temp = right ^ *(ks); \ left ^= sp2[(temp >> 24) & 0x3F]; \ left ^= sp4[(temp >> 16) & 0x3F]; \ left ^= sp6[(temp >> 8) & 0x3F]; \ left ^= sp8[temp & 0x3F]; \ temp = ROR32(right, 4) ^ *(ks + 1); \ left ^= sp1[(temp >> 24) & 0x3F]; \ left ^= sp3[(temp >> 16) & 0x3F]; \ left ^= sp5[(temp >> 8) & 0x3F]; \ left ^= sp7[temp & 0x3F]; \ temp = right; \ right = left; \ left = temp; \ } //! Permuted choice 1 #define DES_PC1(left, right) \ { \ uint temp; \ temp = ((left >> 4) ^ right) & 0x0F0F0F0F; \ right ^= temp; \ left ^= (temp << 4); \ temp = ((right >> 16) ^ left) & 0x0000FFFF; \ left ^= temp; \ right ^= (temp << 16); \ temp = ((left >> 2) ^ right) & 0x33333333; \ right ^= temp; \ left ^= (temp << 2); \ temp = ((right >> 16) ^ left) & 0x0000FFFF; \ left ^= temp; \ right ^= (temp << 16); \ temp = ((left >> 1) ^ right) & 0x55555555; \ right ^= temp; \ left ^= (temp << 1); \ temp = ((right >> 8) ^ left) & 0x00FF00FF; \ left ^= temp; \ right ^= (temp << 8); \ temp = ((left >> 1) ^ right) & 0x55555555; \ right ^= temp; \ left ^= (temp << 1); \ temp = (left << 8) | ((right >> 20) & 0x000000F0); \ left = ((right << 20) & 0x0FF00000); \ left |= ((right << 4) & 0x000FF000); \ left |= ((right >> 12) & 0x00000FF0); \ left |= ((right >> 28) & 0x0000000F); \ right = temp >> 4; \ } //! Selection function 1 static const uint sp1[64] = { 0x01010400, 0x00000000, 0x00010000, 0x01010404, 0x01010004, 0x00010404, 0x00000004, 0x00010000, 0x00000400, 0x01010400, 0x01010404, 0x00000400, 0x01000404, 0x01010004, 0x01000000, 0x00000004, 0x00000404, 0x01000400, 0x01000400, 0x00010400, 0x00010400, 0x01010000, 0x01010000, 0x01000404, 0x00010004, 0x01000004, 0x01000004, 0x00010004, 0x00000000, 0x00000404, 0x00010404, 0x01000000, 0x00010000, 0x01010404, 0x00000004, 0x01010000, 0x01010400, 0x01000000, 0x01000000, 0x00000400, 0x01010004, 0x00010000, 0x00010400, 0x01000004, 0x00000400, 0x00000004, 0x01000404, 0x00010404, 0x01010404, 0x00010004, 0x01010000, 0x01000404, 0x01000004, 0x00000404, 0x00010404, 0x01010400, 0x00000404, 0x01000400, 0x01000400, 0x00000000, 0x00010004, 0x00010400, 0x00000000, 0x01010004 }; //! Selection function 2 static const uint sp2[64] = { 0x80108020, 0x80008000, 0x00008000, 0x00108020, 0x00100000, 0x00000020, 0x80100020, 0x80008020, 0x80000020, 0x80108020, 0x80108000, 0x80000000, 0x80008000, 0x00100000, 0x00000020, 0x80100020, 0x00108000, 0x00100020, 0x80008020, 0x00000000, 0x80000000, 0x00008000, 0x00108020, 0x80100000, 0x00100020, 0x80000020, 0x00000000, 0x00108000, 0x00008020, 0x80108000, 0x80100000, 0x00008020, 0x00000000, 0x00108020, 0x80100020, 0x00100000, 0x80008020, 0x80100000, 0x80108000, 0x00008000, 0x80100000, 0x80008000, 0x00000020, 0x80108020, 0x00108020, 0x00000020, 0x00008000, 0x80000000, 0x00008020, 0x80108000, 0x00100000, 0x80000020, 0x00100020, 0x80008020, 0x80000020, 0x00100020, 0x00108000, 0x00000000, 0x80008000, 0x00008020, 0x80000000, 0x80100020, 0x80108020, 0x00108000 }; //! Selection function 3 static const uint sp3[64] = { 0x00000208, 0x08020200, 0x00000000, 0x08020008, 0x08000200, 0x00000000, 0x00020208, 0x08000200, 0x00020008, 0x08000008, 0x08000008, 0x00020000, 0x08020208, 0x00020008, 0x08020000, 0x00000208, 0x08000000, 0x00000008, 0x08020200, 0x00000200, 0x00020200, 0x08020000, 0x08020008, 0x00020208, 0x08000208, 0x00020200, 0x00020000, 0x08000208, 0x00000008, 0x08020208, 0x00000200, 0x08000000, 0x08020200, 0x08000000, 0x00020008, 0x00000208, 0x00020000, 0x08020200, 0x08000200, 0x00000000, 0x00000200, 0x00020008, 0x08020208, 0x08000200, 0x08000008, 0x00000200, 0x00000000, 0x08020008, 0x08000208, 0x00020000, 0x08000000, 0x08020208, 0x00000008, 0x00020208, 0x00020200, 0x08000008, 0x08020000, 0x08000208, 0x00000208, 0x08020000, 0x00020208, 0x00000008, 0x08020008, 0x00020200 }; //! Selection function 4 static const uint sp4[64] = { 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802080, 0x00800081, 0x00800001, 0x00002001, 0x00000000, 0x00802000, 0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00800080, 0x00800001, 0x00000001, 0x00002000, 0x00800000, 0x00802001, 0x00000080, 0x00800000, 0x00002001, 0x00002080, 0x00800081, 0x00000001, 0x00002080, 0x00800080, 0x00002000, 0x00802080, 0x00802081, 0x00000081, 0x00800080, 0x00800001, 0x00802000, 0x00802081, 0x00000081, 0x00000000, 0x00000000, 0x00802000, 0x00002080, 0x00800080, 0x00800081, 0x00000001, 0x00802001, 0x00002081, 0x00002081, 0x00000080, 0x00802081, 0x00000081, 0x00000001, 0x00002000, 0x00800001, 0x00002001, 0x00802080, 0x00800081, 0x00002001, 0x00002080, 0x00800000, 0x00802001, 0x00000080, 0x00800000, 0x00002000, 0x00802080 }; //! Selection function 5 static const uint sp5[64] = { 0x00000100, 0x02080100, 0x02080000, 0x42000100, 0x00080000, 0x00000100, 0x40000000, 0x02080000, 0x40080100, 0x00080000, 0x02000100, 0x40080100, 0x42000100, 0x42080000, 0x00080100, 0x40000000, 0x02000000, 0x40080000, 0x40080000, 0x00000000, 0x40000100, 0x42080100, 0x42080100, 0x02000100, 0x42080000, 0x40000100, 0x00000000, 0x42000000, 0x02080100, 0x02000000, 0x42000000, 0x00080100, 0x00080000, 0x42000100, 0x000001