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add Freescale K60 mmCAU AES, DES, 3DES support

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This commit is contained in:
Chris Conlon
2013-12-17 16:29:21 -07:00
parent c466fac597
commit 8c8a1b0db8
2 changed files with 270 additions and 2 deletions
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87
ctaocrypt/src/aes.c
View File

@@ -553,6 +553,93 @@ int AesSetKey(Aes* aes, const byte* userKey, word32 keylen, const byte* iv,
return 0; return 0;
} }
#elif defined FREESCALE_MMCAU
/*
* Freescale mmCAU hardware AES support through the CAU/mmCAU library.
* Documentation located in ColdFire/ColdFire+ CAU and Kinetis mmCAU
* Software Library User Guide (See note in README).
*/
#include "cau_api.h"
int AesSetKey(Aes* aes, const byte* userKey, word32 keylen, const byte* iv,
int dir)
{
byte *rk = (byte*)aes->key;
if (!((keylen == 16) || (keylen == 24) || (keylen == 32)))
return BAD_FUNC_ARG;
aes->rounds = keylen/4 + 6;
cau_aes_set_key(userKey, keylen*8, rk);
return AesSetIV(aes, iv);
}
int AesCbcEncrypt(Aes* aes, byte* out, const byte* in, word32 sz)
{
int i;
int offset = 0;
int len = sz;
byte *iv, *enc_key;
byte temp_block[AES_BLOCK_SIZE];
iv = (byte*)aes->reg;
enc_key = (byte*)aes->key;
while (len > 0)
{
XMEMCPY(temp_block, in + offset, AES_BLOCK_SIZE);
/* XOR block with IV for CBC */
for (i = 0; i < AES_BLOCK_SIZE; i++)
temp_block[i] ^= iv[i];
cau_aes_encrypt(temp_block, enc_key, aes->rounds, out + offset);
len -= AES_BLOCK_SIZE;
offset += AES_BLOCK_SIZE;
/* store IV for next block */
XMEMCPY(iv, out + offset - AES_BLOCK_SIZE, AES_BLOCK_SIZE);
}
return 0;
}
int AesCbcDecrypt(Aes* aes, byte* out, const byte* in, word32 sz)
{
int i;
int offset = 0;
int len = sz;
byte* iv, *dec_key;
byte temp_block[AES_BLOCK_SIZE];
iv = (byte*)aes->reg;
dec_key = (byte*)aes->key;
while (len > 0)
{
XMEMCPY(temp_block, in + offset, AES_BLOCK_SIZE);
cau_aes_decrypt(in + offset, dec_key, aes->rounds, out + offset);
/* XOR block with IV for CBC */
for (i = 0; i < AES_BLOCK_SIZE; i++)
(out + offset)[i] ^= iv[i];
/* store IV for next block */
XMEMCPY(iv, temp_block, AES_BLOCK_SIZE);
len -= AES_BLOCK_SIZE;
offset += AES_BLOCK_SIZE;
}
return 0;
}
#else /* CTaoCrypt software implementation */ #else /* CTaoCrypt software implementation */
static const word32 rcon[] = { static const word32 rcon[] = {

181
ctaocrypt/src/des3.c
View File

@@ -413,6 +413,187 @@ void Des3_SetKey(Des3* des3, const byte* key, const byte* iv, int dir)
} }
} }
#elif defined FREESCALE_MMCAU
/*
* Freescale mmCAU hardware DES/3DES support through the CAU/mmCAU library.
* Documentation located in ColdFire/ColdFire+ CAU and Kinetis mmCAU
* Software Library User Guide (See note in README).
*/
#include "cau_api.h"
const unsigned char parityLookup[128] =
{
1,0,0,1,0,1,1,0,0,1,1,0,1,0,0,1,0,1,1,0,1,0,0,1,1,0,0,1,0,1,1,0,
0,1,1,0,1,0,0,1,1,0,0,1,0,1,1,0,1,0,0,1,0,1,1,0,0,1,1,0,1,0,0,1,
0,1,1,0,1,0,0,1,1,0,0,1,0,1,1,0,1,0,0,1,0,1,1,0,0,1,1,0,1,0,0,1,
1,0,0,1,0,1,1,0,0,1,1,0,1,0,0,1,0,1,1,0,1,0,0,1,1,0,0,1,0,1,1,0
};
void Des_SetKey(Des* des, const byte* key, const byte* iv, int dir)
{
int i = 0;
byte* dkey = (byte*)des->key;
XMEMCPY(dkey, key, 8);
Des_SetIV(des, iv);
/* fix key parity, if needed */
for (i = 0; i < 8; i++) {
dkey[i] = ((dkey[i] & 0xFE) | parityLookup[dkey[i] >> 1]);
}
}
void Des3_SetKey(Des3* des, const byte* key, const byte* iv, int dir)
{
int i = 0;
byte* dkey1 = (byte*)des->key[0];
byte* dkey2 = (byte*)des->key[1];
byte* dkey3 = (byte*)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 */
Des3_SetIV(des, iv);
/* fix key parity if needed */
for (i = 0; i < 8; i++)
dkey1[i] = ((dkey1[i] & 0xFE) | parityLookup[dkey1[i] >> 1]);
for (i = 0; i < 8; i++)
dkey2[i] = ((dkey2[i] & 0xFE) | parityLookup[dkey2[i] >> 1]);
for (i = 0; i < 8; i++)
dkey3[i] = ((dkey3[i] & 0xFE) | parityLookup[dkey3[i] >> 1]);
}
void Des_CbcEncrypt(Des* des, byte* out, const byte* in, word32 sz)
{
int i;
int offset = 0;
int len = sz;
byte *iv;
byte temp_block[DES_BLOCK_SIZE];
iv = (byte*)des->reg;
while (len > 0)
{
XMEMCPY(temp_block, in + offset, DES_BLOCK_SIZE);
/* XOR block with IV for CBC */
for (i = 0; i < DES_BLOCK_SIZE; i++)
temp_block[i] ^= iv[i];
cau_des_encrypt(temp_block, (byte*)des->key, out + offset);
len -= DES_BLOCK_SIZE;
offset += DES_BLOCK_SIZE;
/* store IV for next block */
XMEMCPY(iv, out + offset - DES_BLOCK_SIZE, DES_BLOCK_SIZE);
}
return;
}
void Des_CbcDecrypt(Des* des, byte* out, const byte* in, word32 sz)
{
int i;
int offset = 0;
int len = sz;
byte* iv;
byte temp_block[DES_BLOCK_SIZE];
iv = (byte*)des->reg;
while (len > 0)
{
XMEMCPY(temp_block, in + offset, DES_BLOCK_SIZE);
cau_des_decrypt(in + offset, (byte*)des->key, out + offset);
/* XOR block with IV for CBC */
for (i = 0; i < DES_BLOCK_SIZE; i++)
(out + offset)[i] ^= iv[i];
/* store IV for next block */
XMEMCPY(iv, temp_block, DES_BLOCK_SIZE);
len -= DES_BLOCK_SIZE;
offset += DES_BLOCK_SIZE;
}
return;
}
void Des3_CbcEncrypt(Des3* des, byte* out, const byte* in, word32 sz)
{
int i;
int offset = 0;
int len = sz;
byte *iv;
byte temp_block[DES_BLOCK_SIZE];
iv = (byte*)des->reg;
while (len > 0)
{
XMEMCPY(temp_block, in + offset, DES_BLOCK_SIZE);
/* XOR block with IV for CBC */
for (i = 0; i < DES_BLOCK_SIZE; i++)
temp_block[i] ^= iv[i];
cau_des_encrypt(temp_block , (byte*)des->key[0], out + offset);
cau_des_decrypt(out + offset, (byte*)des->key[1], out + offset);
cau_des_encrypt(out + offset, (byte*)des->key[2], out + offset);
len -= DES_BLOCK_SIZE;
offset += DES_BLOCK_SIZE;
/* store IV for next block */
XMEMCPY(iv, out + offset - DES_BLOCK_SIZE, DES_BLOCK_SIZE);
}
return;
}
void Des3_CbcDecrypt(Des3* des, byte* out, const byte* in, word32 sz)
{
int i;
int offset = 0;
int len = sz;
byte* iv;
byte temp_block[DES_BLOCK_SIZE];
iv = (byte*)des->reg;
while (len > 0)
{
XMEMCPY(temp_block, in + offset, DES_BLOCK_SIZE);
cau_des_decrypt(in + offset , (byte*)des->key[2], out + offset);
cau_des_encrypt(out + offset, (byte*)des->key[1], out + offset);
cau_des_decrypt(out + offset, (byte*)des->key[0], out + offset);
/* XOR block with IV for CBC */
for (i = 0; i < DES_BLOCK_SIZE; i++)
(out + offset)[i] ^= iv[i];
/* store IV for next block */
XMEMCPY(iv, temp_block, DES_BLOCK_SIZE);
len -= DES_BLOCK_SIZE;
offset += DES_BLOCK_SIZE;
}
return;
}
#else /* CTaoCrypt software implementation */ #else /* CTaoCrypt software implementation */
/* permuted choice table (key) */ /* permuted choice table (key) */