Ashley Mills
This is a port of cyaSSL 2.7.0.
Dependents: CyaSSL_DTLS_Cellular CyaSSL_DTLS_Ethernet
Diff: ctaocrypt/src/des3.c
- Revision:
- 0:714293de3836
diff -r 000000000000 -r 714293de3836 ctaocrypt/src/des3.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ctaocrypt/src/des3.c Thu Sep 05 10:33:04 2013 +0000
@@ -0,0 +1,886 @@
+/* des3.c
+ *
+ * Copyright (C) 2006-2013 wolfSSL Inc.
+ *
+ * This file is part of CyaSSL.
+ *
+ * CyaSSL 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.
+ *
+ * CyaSSL 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#ifdef HAVE_CONFIG_H
+ #include <config.h>
+#endif
+
+#include <cyassl/ctaocrypt/settings.h>
+
+#ifndef NO_DES3
+
+#include <cyassl/ctaocrypt/des3.h>
+
+#ifdef NO_INLINE
+ #include <cyassl/ctaocrypt/misc.h>
+#else
+ #include <ctaocrypt/src/misc.c>
+#endif
+
+
+#ifdef HAVE_CAVIUM
+ static void Des3_CaviumSetKey(Des3* des3, const byte* key, const byte* iv);
+ static void Des3_CaviumCbcEncrypt(Des3* des3, byte* out, const byte* in,
+ word32 length);
+ static void Des3_CaviumCbcDecrypt(Des3* des3, byte* out, const byte* in,
+ word32 length);
+#endif
+
+#ifdef STM32F2_CRYPTO
+ /*
+ * STM32F2 hardware DES/3DES support through the STM32F2 standard
+ * peripheral library. Documentation located in STM32F2xx Standard
+ * Peripheral Library document (See note in README).
+ */
+ #include "stm32f2xx.h"
+ #include "stm32f2xx_cryp.h"
+
+ void Des_SetKey(Des* des, const byte* key, const byte* iv, int dir)
+ {
+ word32 *dkey = des->key;
+
+ XMEMCPY(dkey, key, 8);
+ ByteReverseWords(dkey, dkey, 8);
+
+ Des_SetIV(des, iv);
+ }
+
+ void Des3_SetKey(Des3* des, const byte* key, const byte* iv, int dir)
+ {
+ word32 *dkey1 = des->key[0];
+ word32 *dkey2 = des->key[1];
+ word32 *dkey3 = des->key[2];
+
+ XMEMCPY(dkey1, key, 8); /* set key 1 */
+ XMEMCPY(dkey2, key + 8, 8); /* set key 2 */
+ XMEMCPY(dkey3, key + 16, 8); /* set key 3 */
+
+ ByteReverseWords(dkey1, dkey1, 8);
+ ByteReverseWords(dkey2, dkey2, 8);
+ ByteReverseWords(dkey3, dkey3, 8);
+
+ Des3_SetIV(des, iv);
+ }
+
+ void DesCrypt(Des* des, byte* out, const byte* in, word32 sz,
+ int dir, int mode)
+ {
+ word32 *dkey, *iv;
+ CRYP_InitTypeDef DES_CRYP_InitStructure;
+ CRYP_KeyInitTypeDef DES_CRYP_KeyInitStructure;
+ CRYP_IVInitTypeDef DES_CRYP_IVInitStructure;
+
+ dkey = des->key;
+ iv = des->reg;
+
+ /* crypto structure initialization */
+ CRYP_KeyStructInit(&DES_CRYP_KeyInitStructure);
+ CRYP_StructInit(&DES_CRYP_InitStructure);
+ CRYP_IVStructInit(&DES_CRYP_IVInitStructure);
+
+ /* reset registers to their default values */
+ CRYP_DeInit();
+
+ /* set direction, mode, and datatype */
+ if (dir == DES_ENCRYPTION) {
+ DES_CRYP_InitStructure.CRYP_AlgoDir = CRYP_AlgoDir_Encrypt;
+ } else { /* DES_DECRYPTION */
+ DES_CRYP_InitStructure.CRYP_AlgoDir = CRYP_AlgoDir_Decrypt;
+ }
+
+ if (mode == DES_CBC) {
+ DES_CRYP_InitStructure.CRYP_AlgoMode = CRYP_AlgoMode_DES_CBC;
+ } else { /* DES_ECB */
+ DES_CRYP_InitStructure.CRYP_AlgoMode = CRYP_AlgoMode_DES_ECB;
+ }
+
+ DES_CRYP_InitStructure.CRYP_DataType = CRYP_DataType_8b;
+ CRYP_Init(&DES_CRYP_InitStructure);
+
+ /* load key into correct registers */
+ DES_CRYP_KeyInitStructure.CRYP_Key1Left = dkey[0];
+ DES_CRYP_KeyInitStructure.CRYP_Key1Right = dkey[1];
+ CRYP_KeyInit(&DES_CRYP_KeyInitStructure);
+
+ /* set iv */
+ ByteReverseWords(iv, iv, DES_BLOCK_SIZE);
+ DES_CRYP_IVInitStructure.CRYP_IV0Left = iv[0];
+ DES_CRYP_IVInitStructure.CRYP_IV0Right = iv[1];
+ CRYP_IVInit(&DES_CRYP_IVInitStructure);
+
+ /* enable crypto processor */
+ CRYP_Cmd(ENABLE);
+
+ while (sz > 0)
+ {
+ /* flush IN/OUT FIFOs */
+ CRYP_FIFOFlush();
+
+ /* if input and output same will overwrite input iv */
+ XMEMCPY(des->tmp, in + sz - DES_BLOCK_SIZE, DES_BLOCK_SIZE);
+
+ CRYP_DataIn(*(uint32_t*)&in[0]);
+ CRYP_DataIn(*(uint32_t*)&in[4]);
+
+ /* wait until the complete message has been processed */
+ while(CRYP_GetFlagStatus(CRYP_FLAG_BUSY) != RESET) {}
+
+ *(uint32_t*)&out[0] = CRYP_DataOut();
+ *(uint32_t*)&out[4] = CRYP_DataOut();
+
+ /* store iv for next call */
+ XMEMCPY(des->reg, des->tmp, DES_BLOCK_SIZE);
+
+ sz -= DES_BLOCK_SIZE;
+ in += DES_BLOCK_SIZE;
+ out += DES_BLOCK_SIZE;
+ }
+
+ /* disable crypto processor */
+ CRYP_Cmd(DISABLE);
+ }
+
+ void Des_CbcEncrypt(Des* des, byte* out, const byte* in, word32 sz)
+ {
+ DesCrypt(des, out, in, sz, DES_ENCRYPTION, DES_CBC);
+ }
+
+ void Des_CbcDecrypt(Des* des, byte* out, const byte* in, word32 sz)
+ {
+ DesCrypt(des, out, in, sz, DES_DECRYPTION, DES_CBC);
+ }
+
+ void Des_EcbEncrypt(Des* des, byte* out, const byte* in, word32 sz)
+ {
+ DesCrypt(des, out, in, sz, DES_ENCRYPTION, DES_ECB);
+ }
+
+ void Des3Crypt(Des3* des, byte* out, const byte* in, word32 sz,
+ int dir)
+ {
+ word32 *dkey1, *dkey2, *dkey3, *iv;
+ CRYP_InitTypeDef DES3_CRYP_InitStructure;
+ CRYP_KeyInitTypeDef DES3_CRYP_KeyInitStructure;
+ CRYP_IVInitTypeDef DES3_CRYP_IVInitStructure;
+
+ dkey1 = des->key[0];
+ dkey2 = des->key[1];
+ dkey3 = des->key[2];
+ iv = des->reg;
+
+ /* crypto structure initialization */
+ CRYP_KeyStructInit(&DES3_CRYP_KeyInitStructure);
+ CRYP_StructInit(&DES3_CRYP_InitStructure);
+ CRYP_IVStructInit(&DES3_CRYP_IVInitStructure);
+
+ /* reset registers to their default values */
+ CRYP_DeInit();
+
+ /* set direction, mode, and datatype */
+ if (dir == DES_ENCRYPTION) {
+ DES3_CRYP_InitStructure.CRYP_AlgoDir = CRYP_AlgoDir_Encrypt;
+ } else {
+ DES3_CRYP_InitStructure.CRYP_AlgoDir = CRYP_AlgoDir_Decrypt;
+ }
+
+ DES3_CRYP_InitStructure.CRYP_AlgoMode = CRYP_AlgoMode_TDES_CBC;
+ DES3_CRYP_InitStructure.CRYP_DataType = CRYP_DataType_8b;
+ CRYP_Init(&DES3_CRYP_InitStructure);
+
+ /* load key into correct registers */
+ DES3_CRYP_KeyInitStructure.CRYP_Key1Left = dkey1[0];
+ DES3_CRYP_KeyInitStructure.CRYP_Key1Right = dkey1[1];
+ DES3_CRYP_KeyInitStructure.CRYP_Key2Left = dkey2[0];
+ DES3_CRYP_KeyInitStructure.CRYP_Key2Right = dkey2[1];
+ DES3_CRYP_KeyInitStructure.CRYP_Key3Left = dkey3[0];
+ DES3_CRYP_KeyInitStructure.CRYP_Key3Right = dkey3[1];
+ CRYP_KeyInit(&DES3_CRYP_KeyInitStructure);
+
+ /* set iv */
+ ByteReverseWords(iv, iv, DES_BLOCK_SIZE);
+ DES3_CRYP_IVInitStructure.CRYP_IV0Left = iv[0];
+ DES3_CRYP_IVInitStructure.CRYP_IV0Right = iv[1];
+ CRYP_IVInit(&DES3_CRYP_IVInitStructure);
+
+ /* enable crypto processor */
+ CRYP_Cmd(ENABLE);
+
+ while (sz > 0)
+ {
+ /* flush IN/OUT FIFOs */
+ CRYP_FIFOFlush();
+
+ CRYP_DataIn(*(uint32_t*)&in[0]);
+ CRYP_DataIn(*(uint32_t*)&in[4]);
+
+ /* wait until the complete message has been processed */
+ while(CRYP_GetFlagStatus(CRYP_FLAG_BUSY) != RESET) {}
+
+ *(uint32_t*)&out[0] = CRYP_DataOut();
+ *(uint32_t*)&out[4] = CRYP_DataOut();
+
+ /* store iv for next call */
+ XMEMCPY(des->reg, out + sz - DES_BLOCK_SIZE, DES_BLOCK_SIZE);
+
+ sz -= DES_BLOCK_SIZE;
+ in += DES_BLOCK_SIZE;
+ out += DES_BLOCK_SIZE;
+ }
+
+ /* disable crypto processor */
+ CRYP_Cmd(DISABLE);
+
+ }
+
+ void Des3_CbcEncrypt(Des3* des, byte* out, const byte* in, word32 sz)
+ {
+ Des3Crypt(des, out, in, sz, DES_ENCRYPTION);
+ }
+
+ void Des3_CbcDecrypt(Des3* des, byte* out, const byte* in, word32 sz)
+ {
+ Des3Crypt(des, out, in, sz, DES_DECRYPTION);
+ }
+
+#else /* CTaoCrypt software implementation */
+
+/* permuted choice table (key) */
+static const byte pc1[] = {
+ 57, 49, 41, 33, 25, 17, 9,
+ 1, 58, 50, 42, 34, 26, 18,
+ 10, 2, 59, 51, 43, 35, 27,
+ 19, 11, 3, 60, 52, 44, 36,
+
+ 63, 55, 47, 39, 31, 23, 15,
+ 7, 62, 54, 46, 38, 30, 22,
+ 14, 6, 61, 53, 45, 37, 29,
+ 21, 13, 5, 28, 20, 12, 4
+};
+
+/* number left rotations of pc1 */
+static const byte totrot[] = {
+ 1,2,4,6,8,10,12,14,15,17,19,21,23,25,27,28
+};
+
+/* permuted choice key (table) */
+static const byte pc2[] = {
+ 14, 17, 11, 24, 1, 5,
+ 3, 28, 15, 6, 21, 10,
+ 23, 19, 12, 4, 26, 8,
+ 16, 7, 27, 20, 13, 2,
+ 41, 52, 31, 37, 47, 55,
+ 30, 40, 51, 45, 33, 48,
+ 44, 49, 39, 56, 34, 53,
+ 46, 42, 50, 36, 29, 32
+};
+
+/* End of DES-defined tables */
+
+/* bit 0 is left-most in byte */
+static const int bytebit[] = {
+ 0200,0100,040,020,010,04,02,01
+};
+
+const word32 Spbox[8][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},
+{
+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},
+{
+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},
+{
+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},
+{
+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,
+0x00080000,0x42000100,0x00000100,0x02000000,
+0x40000000,0x02080000,0x42000100,0x40080100,
+0x02000100,0x40000000,0x42080000,0x02080100,
+0x40080100,0x00000100,0x02000000,0x42080000,
+0x42080100,0x00080100,0x42000000,0x42080100,
+0x02080000,0x00000000,0x40080000,0x42000000,
+0x00080100,0x02000100,0x40000100,0x00080000,
+0x00000000,0x40080000,0x02080100,0x40000100},
+{
+0x20000010,0x20400000,0x00004000,0x20404010,
+0x20400000,0x00000010,0x20404010,0x00400000,
+0x20004000,0x00404010,0x00400000,0x20000010,
+0x00400010,0x20004000,0x20000000,0x00004010,
+0x00000000,0x00400010,0x20004010,0x00004000,
+0x00404000,0x20004010,0x00000010,0x20400010,
+0x20400010,0x00000000,0x00404010,0x20404000,
+0x00004010,0x00404000,0x20404000,0x20000000,
+0x20004000,0x00000010,0x20400010,0x00404000,
+0x20404010,0x00400000,0x00004010,0x20000010,
+0x00400000,0x20004000,0x20000000,0x00004010,
+0x20000010,0x20404010,0x00404000,0x20400000,
+0x00404010,0x20404000,0x00000000,0x20400010,
+0x00000010,0x00004000,0x20400000,0x00404010,
+0x00004000,0x00400010,0x20004010,0x00000000,
+0x20404000,0x20000000,0x00400010,0x20004010},
+{
+0x00200000,0x04200002,0x04000802,0x00000000,
+0x00000800,0x04000802,0x00200802,0x04200800,
+0x04200802,0x00200000,0x00000000,0x04000002,
+0x00000002,0x04000000,0x04200002,0x00000802,
+0x04000800,0x00200802,0x00200002,0x04000800,
+0x04000002,0x04200000,0x04200800,0x00200002,
+0x04200000,0x00000800,0x00000802,0x04200802,
+0x00200800,0x00000002,0x04000000,0x00200800,
+0x04000000,0x00200800,0x00200000,0x04000802,
+0x04000802,0x04200002,0x04200002,0x00000002,
+0x00200002,0x04000000,0x04000800,0x00200000,
+0x04200800,0x00000802,0x00200802,0x04200800,
+0x00000802,0x04000002,0x04200802,0x04200000,
+0x00200800,0x00000000,0x00000002,0x04200802,
+0x00000000,0x00200802,0x04200000,0x00000800,
+0x04000002,0x04000800,0x00000800,0x00200002},
+{
+0x10001040,0x00001000,0x00040000,0x10041040,
+0x10000000,0x10001040,0x00000040,0x10000000,
+0x00040040,0x10040000,0x10041040,0x00041000,
+0x10041000,0x00041040,0x00001000,0x00000040,
+0x10040000,0x10000040,0x10001000,0x00001040,
+0x00041000,0x00040040,0x10040040,0x10041000,
+0x00001040,0x00000000,0x00000000,0x10040040,
+0x10000040,0x10001000,0x00041040,0x00040000,
+0x00041040,0x00040000,0x10041000,0x00001000,
+0x00000040,0x10040040,0x00001000,0x00041040,
+0x10001000,0x00000040,0x10000040,0x10040000,
+0x10040040,0x10000000,0x00040000,0x10001040,
+0x00000000,0x10041040,0x00040040,0x10000040,
+0x10040000,0x10001000,0x10001040,0x00000000,
+0x10041040,0x00041000,0x00041000,0x00001040,
+0x00001040,0x00040040,0x10000000,0x10041000}
+};
+
+
+static INLINE void IPERM(word32* left, word32* right)
+{
+ word32 work;
+
+ *right = rotlFixed(*right, 4U);
+ work = (*left ^ *right) & 0xf0f0f0f0;
+ *left ^= work;
+
+ *right = rotrFixed(*right^work, 20U);
+ work = (*left ^ *right) & 0xffff0000;
+ *left ^= work;
+
+ *right = rotrFixed(*right^work, 18U);
+ work = (*left ^ *right) & 0x33333333;
+ *left ^= work;
+
+ *right = rotrFixed(*right^work, 6U);
+ work = (*left ^ *right) & 0x00ff00ff;
+ *left ^= work;
+
+ *right = rotlFixed(*right^work, 9U);
+ work = (*left ^ *right) & 0xaaaaaaaa;
+ *left = rotlFixed(*left^work, 1U);
+ *right ^= work;
+}
+
+
+static INLINE void FPERM(word32* left, word32* right)
+{
+ word32 work;
+
+ *right = rotrFixed(*right, 1U);
+ work = (*left ^ *right) & 0xaaaaaaaa;
+ *right ^= work;
+
+ *left = rotrFixed(*left^work, 9U);
+ work = (*left ^ *right) & 0x00ff00ff;
+ *right ^= work;
+
+ *left = rotlFixed(*left^work, 6U);
+ work = (*left ^ *right) & 0x33333333;
+ *right ^= work;
+
+ *left = rotlFixed(*left^work, 18U);
+ work = (*left ^ *right) & 0xffff0000;
+ *right ^= work;
+
+ *left = rotlFixed(*left^work, 20U);
+ work = (*left ^ *right) & 0xf0f0f0f0;
+ *right ^= work;
+
+ *left = rotrFixed(*left^work, 4U);
+}
+
+
+static void DesSetKey(const byte* key, int dir, word32* out)
+{
+ byte buffer[56+56+8];
+ byte *const pc1m = buffer; /* place to modify pc1 into */
+ byte *const pcr = pc1m + 56; /* place to rotate pc1 into */
+ byte *const ks = pcr + 56;
+ register int i,j,l;
+ int m;
+
+ for (j = 0; j < 56; j++) { /* convert pc1 to bits of key */
+ l = pc1[j] - 1; /* integer bit location */
+ m = l & 07; /* find bit */
+ pc1m[j] = (key[l >> 3] & /* find which key byte l is in */
+ bytebit[m]) /* and which bit of that byte */
+ ? 1 : 0; /* and store 1-bit result */
+ }
+ for (i = 0; i < 16; i++) { /* key chunk for each iteration */
+ XMEMSET(ks, 0, 8); /* Clear key schedule */
+ for (j = 0; j < 56; j++) /* rotate pc1 the right amount */
+ pcr[j] = pc1m[(l = j + totrot[i]) < (j < 28 ? 28 : 56) ? l: l-28];
+ /* rotate left and right halves independently */
+ for (j = 0; j < 48; j++){ /* select bits individually */
+ /* check bit that goes to ks[j] */
+ if (pcr[pc2[j] - 1]){
+ /* mask it in if it's there */
+ l= j % 6;
+ ks[j/6] |= bytebit[l] >> 2;
+ }
+ }
+ /* Now convert to odd/even interleaved form for use in F */
+ out[2*i] = ((word32)ks[0] << 24)
+ | ((word32)ks[2] << 16)
+ | ((word32)ks[4] << 8)
+ | ((word32)ks[6]);
+ out[2*i + 1] = ((word32)ks[1] << 24)
+ | ((word32)ks[3] << 16)
+ | ((word32)ks[5] << 8)
+ | ((word32)ks[7]);
+ }
+
+ /* reverse key schedule order */
+ if (dir == DES_DECRYPTION)
+ for (i = 0; i < 16; i += 2) {
+ word32 swap = out[i];
+ out[i] = out[DES_KS_SIZE - 2 - i];
+ out[DES_KS_SIZE - 2 - i] = swap;
+
+ swap = out[i + 1];
+ out[i + 1] = out[DES_KS_SIZE - 1 - i];
+ out[DES_KS_SIZE - 1 - i] = swap;
+ }
+
+}
+
+
+static INLINE int Reverse(int dir)
+{
+ return !dir;
+}
+
+
+void Des_SetKey(Des* des, const byte* key, const byte* iv, int dir)
+{
+ DesSetKey(key, dir, des->key);
+
+ Des_SetIV(des, iv);
+}
+
+
+void Des3_SetKey(Des3* des, const byte* key, const byte* iv, int dir)
+{
+#ifdef HAVE_CAVIUM
+ if (des->magic == CYASSL_3DES_CAVIUM_MAGIC)
+ return Des3_CaviumSetKey(des, key, iv);
+#endif
+
+ DesSetKey(key + (dir == DES_ENCRYPTION ? 0 : 16), dir, des->key[0]);
+ DesSetKey(key + 8, Reverse(dir), des->key[1]);
+ DesSetKey(key + (dir == DES_DECRYPTION ? 0 : 16), dir, des->key[2]);
+
+ Des3_SetIV(des, iv);
+}
+
+
+static void DesRawProcessBlock(word32* lIn, word32* rIn, const word32* kptr)
+{
+ word32 l = *lIn, r = *rIn, i;
+
+ for (i=0; i<8; i++)
+ {
+ word32 work = rotrFixed(r, 4U) ^ kptr[4*i+0];
+ l ^= Spbox[6][(work) & 0x3f]
+ ^ Spbox[4][(work >> 8) & 0x3f]
+ ^ Spbox[2][(work >> 16) & 0x3f]
+ ^ Spbox[0][(work >> 24) & 0x3f];
+ work = r ^ kptr[4*i+1];
+ l ^= Spbox[7][(work) & 0x3f]
+ ^ Spbox[5][(work >> 8) & 0x3f]
+ ^ Spbox[3][(work >> 16) & 0x3f]
+ ^ Spbox[1][(work >> 24) & 0x3f];
+
+ work = rotrFixed(l, 4U) ^ kptr[4*i+2];
+ r ^= Spbox[6][(work) & 0x3f]
+ ^ Spbox[4][(work >> 8) & 0x3f]
+ ^ Spbox[2][(work >> 16) & 0x3f]
+ ^ Spbox[0][(work >> 24) & 0x3f];
+ work = l ^ kptr[4*i+3];
+ r ^= Spbox[7][(work) & 0x3f]
+ ^ Spbox[5][(work >> 8) & 0x3f]
+ ^ Spbox[3][(work >> 16) & 0x3f]
+ ^ Spbox[1][(work >> 24) & 0x3f];
+ }
+
+ *lIn = l; *rIn = r;
+}
+
+
+static void DesProcessBlock(Des* des, const byte* in, byte* out)
+{
+ word32 l, r;
+
+ XMEMCPY(&l, in, sizeof(l));
+ XMEMCPY(&r, in + sizeof(l), sizeof(r));
+ #ifdef LITTLE_ENDIAN_ORDER
+ l = ByteReverseWord32(l);
+ r = ByteReverseWord32(r);
+ #endif
+ IPERM(&l,&r);
+
+ DesRawProcessBlock(&l, &r, des->key);
+
+ FPERM(&l,&r);
+ #ifdef LITTLE_ENDIAN_ORDER
+ l = ByteReverseWord32(l);
+ r = ByteReverseWord32(r);
+ #endif
+ XMEMCPY(out, &r, sizeof(r));
+ XMEMCPY(out + sizeof(r), &l, sizeof(l));
+}
+
+
+static void Des3ProcessBlock(Des3* des, const byte* in, byte* out)
+{
+ word32 l, r;
+
+ XMEMCPY(&l, in, sizeof(l));
+ XMEMCPY(&r, in + sizeof(l), sizeof(r));
+ #ifdef LITTLE_ENDIAN_ORDER
+ l = ByteReverseWord32(l);
+ r = ByteReverseWord32(r);
+ #endif
+ IPERM(&l,&r);
+
+ DesRawProcessBlock(&l, &r, des->key[0]);
+ DesRawProcessBlock(&r, &l, des->key[1]);
+ DesRawProcessBlock(&l, &r, des->key[2]);
+
+ FPERM(&l,&r);
+ #ifdef LITTLE_ENDIAN_ORDER
+ l = ByteReverseWord32(l);
+ r = ByteReverseWord32(r);
+ #endif
+ XMEMCPY(out, &r, sizeof(r));
+ XMEMCPY(out + sizeof(r), &l, sizeof(l));
+}
+
+
+void Des_CbcEncrypt(Des* des, byte* out, const byte* in, word32 sz)
+{
+ word32 blocks = sz / DES_BLOCK_SIZE;
+
+ while (blocks--) {
+ xorbuf((byte*)des->reg, in, DES_BLOCK_SIZE);
+ DesProcessBlock(des, (byte*)des->reg, (byte*)des->reg);
+ XMEMCPY(out, des->reg, DES_BLOCK_SIZE);
+
+ out += DES_BLOCK_SIZE;
+ in += DES_BLOCK_SIZE;
+ }
+}
+
+
+void Des_CbcDecrypt(Des* des, byte* out, const byte* in, word32 sz)
+{
+ word32 blocks = sz / DES_BLOCK_SIZE;
+ byte hold[DES_BLOCK_SIZE];
+
+ while (blocks--) {
+ XMEMCPY(des->tmp, in, DES_BLOCK_SIZE);
+ DesProcessBlock(des, (byte*)des->tmp, out);
+ xorbuf(out, (byte*)des->reg, DES_BLOCK_SIZE);
+
+ XMEMCPY(hold, des->reg, DES_BLOCK_SIZE);
+ XMEMCPY(des->reg, des->tmp, DES_BLOCK_SIZE);
+ XMEMCPY(des->tmp, hold, DES_BLOCK_SIZE);
+
+ out += DES_BLOCK_SIZE;
+ in += DES_BLOCK_SIZE;
+ }
+}
+
+
+void Des3_CbcEncrypt(Des3* des, byte* out, const byte* in, word32 sz)
+{
+ word32 blocks;
+
+#ifdef HAVE_CAVIUM
+ if (des->magic == CYASSL_3DES_CAVIUM_MAGIC)
+ return Des3_CaviumCbcEncrypt(des, out, in, sz);
+#endif
+
+ blocks = sz / DES_BLOCK_SIZE;
+ while (blocks--) {
+ xorbuf((byte*)des->reg, in, DES_BLOCK_SIZE);
+ Des3ProcessBlock(des, (byte*)des->reg, (byte*)des->reg);
+ XMEMCPY(out, des->reg, DES_BLOCK_SIZE);
+
+ out += DES_BLOCK_SIZE;
+ in += DES_BLOCK_SIZE;
+ }
+}
+
+
+void Des3_CbcDecrypt(Des3* des, byte* out, const byte* in, word32 sz)
+{
+ word32 blocks;
+
+#ifdef HAVE_CAVIUM
+ if (des->magic == CYASSL_3DES_CAVIUM_MAGIC)
+ return Des3_CaviumCbcDecrypt(des, out, in, sz);
+#endif
+
+ blocks = sz / DES_BLOCK_SIZE;
+ while (blocks--) {
+ XMEMCPY(des->tmp, in, DES_BLOCK_SIZE);
+ Des3ProcessBlock(des, (byte*)des->tmp, out);
+ xorbuf(out, (byte*)des->reg, DES_BLOCK_SIZE);
+ XMEMCPY(des->reg, des->tmp, DES_BLOCK_SIZE);
+
+ out += DES_BLOCK_SIZE;
+ in += DES_BLOCK_SIZE;
+ }
+}
+
+#ifdef CYASSL_DES_ECB
+
+/* One block, compatibility only */
+void Des_EcbEncrypt(Des* des, byte* out, const byte* in, word32 sz)
+{
+ word32 blocks = sz / DES_BLOCK_SIZE;
+
+ while (blocks--) {
+ DesProcessBlock(des, in, out);
+
+ out += DES_BLOCK_SIZE;
+ in += DES_BLOCK_SIZE;
+ }
+}
+
+#endif /* CYASSL_DES_ECB */
+
+#endif /* STM32F2_CRYPTO */
+
+void Des_SetIV(Des* des, const byte* iv)
+{
+ if (des && iv)
+ XMEMCPY(des->reg, iv, DES_BLOCK_SIZE);
+}
+
+
+void Des3_SetIV(Des3* des, const byte* iv)
+{
+ if (des && iv)
+ XMEMCPY(des->reg, iv, DES_BLOCK_SIZE);
+}
+
+
+#ifdef HAVE_CAVIUM
+
+#include <cyassl/ctaocrypt/logging.h>
+#include "cavium_common.h"
+
+/* Initiliaze Des3 for use with Nitrox device */
+int Des3_InitCavium(Des3* des3, int devId)
+{
+ if (des3 == NULL)
+ return -1;
+
+ if (CspAllocContext(CONTEXT_SSL, &des3->contextHandle, devId) != 0)
+ return -1;
+
+ des3->devId = devId;
+ des3->magic = CYASSL_3DES_CAVIUM_MAGIC;
+
+ return 0;
+}
+
+
+/* Free Des3 from use with Nitrox device */
+void Des3_FreeCavium(Des3* des3)
+{
+ if (des3 == NULL)
+ return;
+
+ if (des3->magic != CYASSL_3DES_CAVIUM_MAGIC)
+ return;
+
+ CspFreeContext(CONTEXT_SSL, des3->contextHandle, des3->devId);
+ des3->magic = 0;
+}
+
+
+static void Des3_CaviumSetKey(Des3* des3, const byte* key, const byte* iv)
+{
+ if (des3 == NULL)
+ return;
+
+ /* key[0] holds key, iv in reg */
+ XMEMCPY(des3->key[0], key, DES_BLOCK_SIZE*3);
+
+ Des3_SetIV(des3, iv);
+}
+
+
+static void Des3_CaviumCbcEncrypt(Des3* des3, byte* out, const byte* in,
+ word32 length)
+{
+ word offset = 0;
+ word32 requestId;
+
+ while (length > CYASSL_MAX_16BIT) {
+ word16 slen = (word16)CYASSL_MAX_16BIT;
+ if (CspEncrypt3Des(CAVIUM_BLOCKING, des3->contextHandle,
+ CAVIUM_NO_UPDATE, slen, (byte*)in + offset,
+ out + offset, (byte*)des3->reg, (byte*)des3->key[0],
+ &requestId, des3->devId) != 0) {
+ CYASSL_MSG("Bad Cavium 3DES Cbc Encrypt");
+ }
+ length -= CYASSL_MAX_16BIT;
+ offset += CYASSL_MAX_16BIT;
+ XMEMCPY(des3->reg, out + offset - DES_BLOCK_SIZE, DES_BLOCK_SIZE);
+ }
+ if (length) {
+ word16 slen = (word16)length;
+
+ if (CspEncrypt3Des(CAVIUM_BLOCKING, des3->contextHandle,
+ CAVIUM_NO_UPDATE, slen, (byte*)in + offset,
+ out + offset, (byte*)des3->reg, (byte*)des3->key[0],
+ &requestId, des3->devId) != 0) {
+ CYASSL_MSG("Bad Cavium 3DES Cbc Encrypt");
+ }
+ XMEMCPY(des3->reg, out+offset+length - DES_BLOCK_SIZE, DES_BLOCK_SIZE);
+ }
+}
+
+static void Des3_CaviumCbcDecrypt(Des3* des3, byte* out, const byte* in,
+ word32 length)
+{
+ word32 requestId;
+ word offset = 0;
+
+ while (length > CYASSL_MAX_16BIT) {
+ word16 slen = (word16)CYASSL_MAX_16BIT;
+ XMEMCPY(des3->tmp, in + offset + slen - DES_BLOCK_SIZE, DES_BLOCK_SIZE);
+ if (CspDecrypt3Des(CAVIUM_BLOCKING, des3->contextHandle,
+ CAVIUM_NO_UPDATE, slen, (byte*)in+offset, out+offset,
+ (byte*)des3->reg, (byte*)des3->key[0], &requestId,
+ des3->devId) != 0) {
+ CYASSL_MSG("Bad Cavium 3Des Decrypt");
+ }
+ length -= CYASSL_MAX_16BIT;
+ offset += CYASSL_MAX_16BIT;
+ XMEMCPY(des3->reg, des3->tmp, DES_BLOCK_SIZE);
+ }
+ if (length) {
+ word16 slen = (word16)length;
+ XMEMCPY(des3->tmp, in + offset + slen - DES_BLOCK_SIZE,DES_BLOCK_SIZE);
+ if (CspDecrypt3Des(CAVIUM_BLOCKING, des3->contextHandle,
+ CAVIUM_NO_UPDATE, slen, (byte*)in+offset, out+offset,
+ (byte*)des3->reg, (byte*)des3->key[0], &requestId,
+ des3->devId) != 0) {
+ CYASSL_MSG("Bad Cavium 3Des Decrypt");
+ }
+ XMEMCPY(des3->reg, des3->tmp, DES_BLOCK_SIZE);
+ }
+}
+
+#endif /* HAVE_CAVIUM */
+
+#endif /* NO_DES3 */
