Index: modules/App Framework/rijndael-api-fst.c =================================================================== diff -u -N --- modules/App Framework/rijndael-api-fst.c (revision 3e1186252ab31f63d86d86c4b0ff593cfffbefde) +++ modules/App Framework/rijndael-api-fst.c (revision 0) @@ -1,442 +0,0 @@ -/** - * rijndael-api-fst.c - * - * @version 2.9 (December 2000) - * - * Optimised ANSI C code for the Rijndael cipher (now AES) - * - * @author Vincent Rijmen - * @author Antoon Bosselaers - * @author Paulo Barreto - * - * This code is hereby placed in the public domain. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS - * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE - * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR - * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, - * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE - * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, - * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * Acknowledgements: - * - * We are deeply indebted to the following people for their bug reports, - * fixes, and improvement suggestions to this implementation. Though we - * tried to list all contributions, we apologise in advance for any - * missing reference. - * - * Andrew Bales - * Markus Friedl - * John Skodon - */ - -#include -#include -#include - -#include "rijndael-alg-fst.h" -#include "rijndael-api-fst.h" - -int makeKey(keyInstance *key, BYTE direction, int keyLen, const char *keyMaterial) { - int i; - char *keyMat; - u8 cipherKey[MAXKB]; - - if (key == NULL) { - return BAD_KEY_INSTANCE; - } - - if ((direction == DIR_ENCRYPT) || (direction == DIR_DECRYPT)) { - key->direction = direction; - } else { - return BAD_KEY_DIR; - } - - if ((keyLen == 128) || (keyLen == 192) || (keyLen == 256)) { - key->keyLen = keyLen; - } else { - return BAD_KEY_MAT; - } - - if (keyMaterial != NULL) { - strncpy(key->keyMaterial, keyMaterial, keyLen/4); - } - - /* initialize key schedule: */ - keyMat = key->keyMaterial; - for (i = 0; i < key->keyLen/8; i++) { - int t, v; - - t = *keyMat++; - if ((t >= '0') && (t <= '9')) v = (t - '0') << 4; - else if ((t >= 'a') && (t <= 'f')) v = (t - 'a' + 10) << 4; - else if ((t >= 'A') && (t <= 'F')) v = (t - 'A' + 10) << 4; - else return BAD_KEY_MAT; - - t = *keyMat++; - if ((t >= '0') && (t <= '9')) v ^= (t - '0'); - else if ((t >= 'a') && (t <= 'f')) v ^= (t - 'a' + 10); - else if ((t >= 'A') && (t <= 'F')) v ^= (t - 'A' + 10); - else return BAD_KEY_MAT; - - cipherKey[i] = (u8)v; - } - if (direction == DIR_ENCRYPT) { - key->Nr = rijndaelKeySetupEnc(key->rk, cipherKey, keyLen); - } else { - key->Nr = rijndaelKeySetupDec(key->rk, cipherKey, keyLen); - } - rijndaelKeySetupEnc(key->ek, cipherKey, keyLen); - return TRUE; -} - -int cipherInit(cipherInstance *cipher, BYTE mode, char *IV) { - if ((mode == MODE_ECB) || (mode == MODE_CBC) || (mode == MODE_CFB1)) { - cipher->mode = mode; - } else { - return BAD_CIPHER_MODE; - } - if (IV != NULL) { - int i; - for (i = 0; i < MAX_IV_SIZE; i++) { - int t, j; - - t = IV[2*i]; - if ((t >= '0') && (t <= '9')) j = (t - '0') << 4; - else if ((t >= 'a') && (t <= 'f')) j = (t - 'a' + 10) << 4; - else if ((t >= 'A') && (t <= 'F')) j = (t - 'A' + 10) << 4; - else return BAD_CIPHER_INSTANCE; - - t = IV[2*i+1]; - if ((t >= '0') && (t <= '9')) j ^= (t - '0'); - else if ((t >= 'a') && (t <= 'f')) j ^= (t - 'a' + 10); - else if ((t >= 'A') && (t <= 'F')) j ^= (t - 'A' + 10); - else return BAD_CIPHER_INSTANCE; - - cipher->IV[i] = (u8)j; - } - } else { - memset(cipher->IV, 0, MAX_IV_SIZE); - } - return TRUE; -} - -int blockEncrypt(cipherInstance *cipher, keyInstance *key, - BYTE *input, int inputLen, BYTE *outBuffer) { - int i, k, t, numBlocks; - u8 block[16], *iv; - - if (cipher == NULL || - key == NULL || - key->direction == DIR_DECRYPT) { - return BAD_CIPHER_STATE; - } - if (input == NULL || inputLen <= 0) { - return 0; /* nothing to do */ - } - - numBlocks = inputLen/128; - - switch (cipher->mode) { - case MODE_ECB: - for (i = numBlocks; i > 0; i--) { - rijndaelEncrypt(key->rk, key->Nr, input, outBuffer); - input += 16; - outBuffer += 16; - } - break; - - case MODE_CBC: - iv = cipher->IV; - for (i = numBlocks; i > 0; i--) { - ((u32*)block)[0] = ((u32*)input)[0] ^ ((u32*)iv)[0]; - ((u32*)block)[1] = ((u32*)input)[1] ^ ((u32*)iv)[1]; - ((u32*)block)[2] = ((u32*)input)[2] ^ ((u32*)iv)[2]; - ((u32*)block)[3] = ((u32*)input)[3] ^ ((u32*)iv)[3]; - rijndaelEncrypt(key->rk, key->Nr, block, outBuffer); - iv = outBuffer; - input += 16; - outBuffer += 16; - } - break; - - case MODE_CFB1: - iv = cipher->IV; - for (i = numBlocks; i > 0; i--) { - memcpy(outBuffer, input, 16); - for (k = 0; k < 128; k++) { - rijndaelEncrypt(key->ek, key->Nr, iv, block); - outBuffer[k >> 3] ^= (block[0] & 0x80U) >> (k & 7); - for (t = 0; t < 15; t++) { - iv[t] = (iv[t] << 1) | (iv[t + 1] >> 7); - } - iv[15] = (iv[15] << 1) | ((outBuffer[k >> 3] >> (7 - (k & 7))) & 1); - } - outBuffer += 16; - input += 16; - } - break; - - default: - return BAD_CIPHER_STATE; - } - - return 128*numBlocks; -} - -/** - * Encrypt data partitioned in octets, using RFC 2040-like padding. - * - * @param input data to be encrypted (octet sequence) - * @param inputOctets input length in octets (not bits) - * @param outBuffer encrypted output data - * - * @return length in octets (not bits) of the encrypted output buffer. - */ -int padEncrypt(cipherInstance *cipher, keyInstance *key, - BYTE *input, int inputOctets, BYTE *outBuffer) { - int i, numBlocks, padLen; - u8 block[16], *iv; - - if (cipher == NULL || - key == NULL || - key->direction == DIR_DECRYPT) { - return BAD_CIPHER_STATE; - } - if (input == NULL || inputOctets <= 0) { - return 0; /* nothing to do */ - } - - numBlocks = inputOctets/16; - - switch (cipher->mode) { - case MODE_ECB: - for (i = numBlocks; i > 0; i--) { - rijndaelEncrypt(key->rk, key->Nr, input, outBuffer); - input += 16; - outBuffer += 16; - } - padLen = 16 - (inputOctets - 16*numBlocks); - assert(padLen > 0 && padLen <= 16); - memcpy(block, input, 16 - padLen); - memset(block + 16 - padLen, padLen, padLen); - rijndaelEncrypt(key->rk, key->Nr, block, outBuffer); - break; - - case MODE_CBC: - iv = cipher->IV; - for (i = numBlocks; i > 0; i--) { - ((u32*)block)[0] = ((u32*)input)[0] ^ ((u32*)iv)[0]; - ((u32*)block)[1] = ((u32*)input)[1] ^ ((u32*)iv)[1]; - ((u32*)block)[2] = ((u32*)input)[2] ^ ((u32*)iv)[2]; - ((u32*)block)[3] = ((u32*)input)[3] ^ ((u32*)iv)[3]; - rijndaelEncrypt(key->rk, key->Nr, block, outBuffer); - iv = outBuffer; - input += 16; - outBuffer += 16; - } - padLen = 16 - (inputOctets - 16*numBlocks); - assert(padLen > 0 && padLen <= 16); - for (i = 0; i < 16 - padLen; i++) { - block[i] = input[i] ^ iv[i]; - } - for (i = 16 - padLen; i < 16; i++) { - block[i] = (BYTE)padLen ^ iv[i]; - } - rijndaelEncrypt(key->rk, key->Nr, block, outBuffer); - break; - - default: - return BAD_CIPHER_STATE; - } - - return 16*(numBlocks + 1); -} - -int blockDecrypt(cipherInstance *cipher, keyInstance *key, - BYTE *input, int inputLen, BYTE *outBuffer) { - int i, k, t, numBlocks; - u8 block[16], *iv; - - if (cipher == NULL || - key == NULL || - cipher->mode != MODE_CFB1 && key->direction == DIR_ENCRYPT) { - return BAD_CIPHER_STATE; - } - if (input == NULL || inputLen <= 0) { - return 0; /* nothing to do */ - } - - numBlocks = inputLen/128; - - switch (cipher->mode) { - case MODE_ECB: - for (i = numBlocks; i > 0; i--) { - rijndaelDecrypt(key->rk, key->Nr, input, outBuffer); - input += 16; - outBuffer += 16; - } - break; - - case MODE_CBC: - iv = cipher->IV; - for (i = numBlocks; i > 0; i--) { - rijndaelDecrypt(key->rk, key->Nr, input, block); - ((u32*)block)[0] ^= ((u32*)iv)[0]; - ((u32*)block)[1] ^= ((u32*)iv)[1]; - ((u32*)block)[2] ^= ((u32*)iv)[2]; - ((u32*)block)[3] ^= ((u32*)iv)[3]; - memcpy(cipher->IV, input, 16); - memcpy(outBuffer, block, 16); - input += 16; - outBuffer += 16; - } - break; - - case MODE_CFB1: - iv = cipher->IV; - for (i = numBlocks; i > 0; i--) { - memcpy(outBuffer, input, 16); - for (k = 0; k < 128; k++) { - rijndaelEncrypt(key->ek, key->Nr, iv, block); - for (t = 0; t < 15; t++) { - iv[t] = (iv[t] << 1) | (iv[t + 1] >> 7); - } - iv[15] = (iv[15] << 1) | ((input[k >> 3] >> (7 - (k & 7))) & 1); - outBuffer[k >> 3] ^= (block[0] & 0x80U) >> (k & 7); - } - outBuffer += 16; - input += 16; - } - break; - - default: - return BAD_CIPHER_STATE; - } - - return 128*numBlocks; -} - -int padDecrypt(cipherInstance *cipher, keyInstance *key, - BYTE *input, int inputOctets, BYTE *outBuffer) { - int i, numBlocks, padLen; - u8 block[16]; - - if (cipher == NULL || - key == NULL || - key->direction == DIR_ENCRYPT) { - return BAD_CIPHER_STATE; - } - if (input == NULL || inputOctets <= 0) { - return 0; /* nothing to do */ - } - if (inputOctets % 16 != 0) { - return BAD_DATA; - } - - numBlocks = inputOctets/16; - - switch (cipher->mode) { - case MODE_ECB: - /* all blocks but last */ - for (i = numBlocks - 1; i > 0; i--) { - rijndaelDecrypt(key->rk, key->Nr, input, outBuffer); - input += 16; - outBuffer += 16; - } - /* last block */ - rijndaelDecrypt(key->rk, key->Nr, input, block); - padLen = block[15]; - if (padLen >= 16) { - return BAD_DATA; - } - for (i = 16 - padLen; i < 16; i++) { - if (block[i] != padLen) { - return BAD_DATA; - } - } - memcpy(outBuffer, block, 16 - padLen); - break; - - case MODE_CBC: - /* all blocks but last */ - for (i = numBlocks - 1; i > 0; i--) { - rijndaelDecrypt(key->rk, key->Nr, input, block); - ((u32*)block)[0] ^= ((u32*)cipher->IV)[0]; - ((u32*)block)[1] ^= ((u32*)cipher->IV)[1]; - ((u32*)block)[2] ^= ((u32*)cipher->IV)[2]; - ((u32*)block)[3] ^= ((u32*)cipher->IV)[3]; - memcpy(cipher->IV, input, 16); - memcpy(outBuffer, block, 16); - input += 16; - outBuffer += 16; - } - /* last block */ - rijndaelDecrypt(key->rk, key->Nr, input, block); - ((u32*)block)[0] ^= ((u32*)cipher->IV)[0]; - ((u32*)block)[1] ^= ((u32*)cipher->IV)[1]; - ((u32*)block)[2] ^= ((u32*)cipher->IV)[2]; - ((u32*)block)[3] ^= ((u32*)cipher->IV)[3]; - padLen = block[15]; - if (padLen <= 0 || padLen > 16) { - return BAD_DATA; - } - for (i = 16 - padLen; i < 16; i++) { - if (block[i] != padLen) { - return BAD_DATA; - } - } - memcpy(outBuffer, block, 16 - padLen); - break; - - default: - return BAD_CIPHER_STATE; - } - - return 16*numBlocks - padLen; -} - -#ifdef INTERMEDIATE_VALUE_KAT -/** - * cipherUpdateRounds: - * - * Encrypts/Decrypts exactly one full block a specified number of rounds. - * Only used in the Intermediate Value Known Answer Test. - * - * Returns: - * TRUE - on success - * BAD_CIPHER_STATE - cipher in bad state (e.g., not initialized) - */ -int cipherUpdateRounds(cipherInstance *cipher, keyInstance *key, - BYTE *input, int inputLen, BYTE *outBuffer, int rounds) { - u8 block[16]; - - if (cipher == NULL || key == NULL) { - return BAD_CIPHER_STATE; - } - - memcpy(block, input, 16); - - switch (key->direction) { - case DIR_ENCRYPT: - rijndaelEncryptRound(key->rk, key->Nr, block, rounds); - break; - - case DIR_DECRYPT: - rijndaelDecryptRound(key->rk, key->Nr, block, rounds); - break; - - default: - return BAD_KEY_DIR; - } - - memcpy(outBuffer, block, 16); - - return TRUE; -} -#endif /* INTERMEDIATE_VALUE_KAT */