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author | Jo-Philipp Wich <jow@openwrt.org> | 2010-05-04 20:59:19 +0000 |
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committer | Jo-Philipp Wich <jow@openwrt.org> | 2010-05-04 20:59:19 +0000 |
commit | 32e7340bf26d1d59aefb14bf1af4c2e3cb9a9642 (patch) | |
tree | e04b357c36a5042b6f844d01e89633949600fdb3 /target/linux/generic-2.6/files/crypto/ocf/kirkwood/cesa/AES/mvAesApi.c | |
parent | d30f29165acba8532b117bd7c61f71be4cd6619c (diff) | |
download | master-31e0f0ae-32e7340bf26d1d59aefb14bf1af4c2e3cb9a9642.tar.gz master-31e0f0ae-32e7340bf26d1d59aefb14bf1af4c2e3cb9a9642.tar.bz2 master-31e0f0ae-32e7340bf26d1d59aefb14bf1af4c2e3cb9a9642.zip |
update OCF framework to version 20100325
SVN-Revision: 21356
Diffstat (limited to 'target/linux/generic-2.6/files/crypto/ocf/kirkwood/cesa/AES/mvAesApi.c')
-rw-r--r-- | target/linux/generic-2.6/files/crypto/ocf/kirkwood/cesa/AES/mvAesApi.c | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/target/linux/generic-2.6/files/crypto/ocf/kirkwood/cesa/AES/mvAesApi.c b/target/linux/generic-2.6/files/crypto/ocf/kirkwood/cesa/AES/mvAesApi.c new file mode 100644 index 0000000000..b432dc6e66 --- /dev/null +++ b/target/linux/generic-2.6/files/crypto/ocf/kirkwood/cesa/AES/mvAesApi.c @@ -0,0 +1,312 @@ +/* rijndael-api-ref.c v2.1 April 2000 + * Reference ANSI C code + * authors: v2.0 Paulo Barreto + * Vincent Rijmen, K.U.Leuven + * v2.1 Vincent Rijmen, K.U.Leuven + * + * This code is placed in the public domain. + */ +#include "mvOs.h" + +#include "mvAes.h" +#include "mvAesAlg.h" + + +/* Defines: + Add any additional defines you need +*/ + +#define MODE_ECB 1 /* Are we ciphering in ECB mode? */ +#define MODE_CBC 2 /* Are we ciphering in CBC mode? */ +#define MODE_CFB1 3 /* Are we ciphering in 1-bit CFB mode? */ + + +int aesMakeKey(MV_U8 *expandedKey, MV_U8 *keyMaterial, int keyLen, int blockLen) +{ + MV_U8 W[MAXROUNDS+1][4][MAXBC]; + MV_U8 k[4][MAXKC]; + MV_U8 j; + int i, rounds, KC; + + if (expandedKey == NULL) + { + return AES_BAD_KEY_INSTANCE; + } + + if (!((keyLen == 128) || (keyLen == 192) || (keyLen == 256))) + { + return AES_BAD_KEY_MAT; + } + + if (keyMaterial == NULL) + { + return AES_BAD_KEY_MAT; + } + + /* initialize key schedule: */ + for(i=0; i<keyLen/8; i++) + { + j = keyMaterial[i]; + k[i % 4][i / 4] = j; + } + + rijndaelKeySched (k, keyLen, blockLen, W); +#ifdef MV_AES_DEBUG + { + MV_U8* pW = &W[0][0][0]; + int x; + + mvOsPrintf("Expended Key: size = %d\n", sizeof(W)); + for(i=0; i<sizeof(W); i++) + { + mvOsPrintf("%02x ", pW[i]); + } + for(i=0; i<MAXROUNDS+1; i++) + { + mvOsPrintf("\n Round #%02d: ", i); + for(x=0; x<MAXBC; x++) + { + mvOsPrintf("%02x%02x%02x%02x ", + W[i][0][x], W[i][1][x], W[i][2][x], W[i][3][x]); + } + mvOsPrintf("\n"); + } + } +#endif /* MV_AES_DEBUG */ + switch (keyLen) + { + case 128: + rounds = 10; + KC = 4; + break; + case 192: + rounds = 12; + KC = 6; + break; + case 256: + rounds = 14; + KC = 8; + break; + default : + return (-1); + } + + for(i=0; i<MAXBC; i++) + { + for(j=0; j<4; j++) + { + expandedKey[i*4+j] = W[rounds][j][i]; + } + } + for(; i<KC; i++) + { + for(j=0; j<4; j++) + { + expandedKey[i*4+j] = W[rounds-1][j][i+MAXBC-KC]; + } + } + + + return 0; +} + +int aesBlockEncrypt128(MV_U8 mode, MV_U8 *IV, MV_U8 *expandedKey, int keyLen, + MV_U32 *plain, int numBlocks, MV_U32 *cipher) +{ + int i, j, t; + MV_U8 block[4][MAXBC]; + int rounds; + char *input, *outBuffer; + + input = (char*)plain; + outBuffer = (char*)cipher; + + /* check parameter consistency: */ + if( (expandedKey == NULL) || ((keyLen != 128) && (keyLen != 192) && (keyLen != 256))) + { + return AES_BAD_KEY_MAT; + } + if ((mode != MODE_ECB && mode != MODE_CBC)) + { + return AES_BAD_CIPHER_STATE; + } + + switch (keyLen) + { + case 128: rounds = 10; break; + case 192: rounds = 12; break; + case 256: rounds = 14; break; + default : return (-3); /* this cannot happen */ + } + + + switch (mode) + { + case MODE_ECB: + for (i = 0; i < numBlocks; i++) + { + for (j = 0; j < 4; j++) + { + for(t = 0; t < 4; t++) + /* parse input stream into rectangular array */ + block[t][j] = input[16*i+4*j+t] & 0xFF; + } + rijndaelEncrypt128(block, (MV_U8 (*)[4][MAXBC])expandedKey, rounds); + for (j = 0; j < 4; j++) + { + /* parse rectangular array into output ciphertext bytes */ + for(t = 0; t < 4; t++) + outBuffer[16*i+4*j+t] = (MV_U8) block[t][j]; + + } + } + break; + + case MODE_CBC: + for (j = 0; j < 4; j++) + { + for(t = 0; t < 4; t++) + /* parse initial value into rectangular array */ + block[t][j] = IV[t+4*j] & 0xFF; + } + for (i = 0; i < numBlocks; i++) + { + for (j = 0; j < 4; j++) + { + for(t = 0; t < 4; t++) + /* parse input stream into rectangular array and exor with + IV or the previous ciphertext */ + block[t][j] ^= input[16*i+4*j+t] & 0xFF; + } + rijndaelEncrypt128(block, (MV_U8 (*)[4][MAXBC])expandedKey, rounds); + for (j = 0; j < 4; j++) + { + /* parse rectangular array into output ciphertext bytes */ + for(t = 0; t < 4; t++) + outBuffer[16*i+4*j+t] = (MV_U8) block[t][j]; + } + } + break; + + default: return AES_BAD_CIPHER_STATE; + } + + return 0; +} + +int aesBlockDecrypt128(MV_U8 mode, MV_U8 *IV, MV_U8 *expandedKey, int keyLen, + MV_U32 *srcData, int numBlocks, MV_U32 *dstData) +{ + int i, j, t; + MV_U8 block[4][MAXBC]; + MV_U8 iv[4][MAXBC]; + int rounds; + char *input, *outBuffer; + + input = (char*)srcData; + outBuffer = (char*)dstData; + + if (expandedKey == NULL) + { + return AES_BAD_KEY_MAT; + } + + /* check parameter consistency: */ + if (keyLen != 128 && keyLen != 192 && keyLen != 256) + { + return AES_BAD_KEY_MAT; + } + if ((mode != MODE_ECB && mode != MODE_CBC)) + { + return AES_BAD_CIPHER_STATE; + } + + switch (keyLen) + { + case 128: rounds = 10; break; + case 192: rounds = 12; break; + case 256: rounds = 14; break; + default : return (-3); /* this cannot happen */ + } + + + switch (mode) + { + case MODE_ECB: + for (i = 0; i < numBlocks; i++) + { + for (j = 0; j < 4; j++) + { + for(t = 0; t < 4; t++) + { + /* parse input stream into rectangular array */ + block[t][j] = input[16*i+4*j+t] & 0xFF; + } + } + rijndaelDecrypt128(block, (MV_U8 (*)[4][MAXBC])expandedKey, rounds); + for (j = 0; j < 4; j++) + { + /* parse rectangular array into output ciphertext bytes */ + for(t = 0; t < 4; t++) + outBuffer[16*i+4*j+t] = (MV_U8) block[t][j]; + } + } + break; + + case MODE_CBC: + /* first block */ + for (j = 0; j < 4; j++) + { + for(t = 0; t < 4; t++) + { + /* parse input stream into rectangular array */ + block[t][j] = input[4*j+t] & 0xFF; + iv[t][j] = block[t][j]; + } + } + rijndaelDecrypt128(block, (MV_U8 (*)[4][MAXBC])expandedKey, rounds); + + for (j = 0; j < 4; j++) + { + /* exor the IV and parse rectangular array into output ciphertext bytes */ + for(t = 0; t < 4; t++) + { + outBuffer[4*j+t] = (MV_U8) (block[t][j] ^ IV[t+4*j]); + IV[t+4*j] = iv[t][j]; + } + } + + /* next blocks */ + for (i = 1; i < numBlocks; i++) + { + for (j = 0; j < 4; j++) + { + for(t = 0; t < 4; t++) + { + /* parse input stream into rectangular array */ + iv[t][j] = input[16*i+4*j+t] & 0xFF; + block[t][j] = iv[t][j]; + } + } + rijndaelDecrypt128(block, (MV_U8 (*)[4][MAXBC])expandedKey, rounds); + + for (j = 0; j < 4; j++) + { + /* exor previous ciphertext block and parse rectangular array + into output ciphertext bytes */ + for(t = 0; t < 4; t++) + { + outBuffer[16*i+4*j+t] = (MV_U8) (block[t][j] ^ IV[t+4*j]); + IV[t+4*j] = iv[t][j]; + } + } + } + break; + + default: return AES_BAD_CIPHER_STATE; + } + + return 0; +} + + |