+++ /dev/null
-/*
- * Copyright (c) 2000-2001 Apple Computer, Inc. All Rights Reserved.
- *
- * The contents of this file constitute Original Code as defined in and are
- * subject to the Apple Public Source License Version 1.2 (the 'License').
- * You may not use this file except in compliance with the License. Please obtain
- * a copy of the License at http://www.apple.com/publicsource and read it before
- * using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
- * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
- * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
- * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
- * specific language governing rights and limitations under the License.
- */
-
-
-/*
- * rijndaelApi.c - AES API layer
- *
- * Based on rijndael-api-ref.h v2.0 written by Paulo Barreto
- * and Vincent Rijmen
- */
-#include <stdlib.h>
-#include <string.h>
-
-#include "rijndael-alg-ref.h"
-#include "rijndaelApi.h"
-
-#ifdef ALTIVEC_ENABLE
-/* this goes somewhere else and gets init'd by the plugin object.... */
-/* as of 4/11/2001, the vectorized routines do NOT work */
-int gHasAltivec = 0;
-#endif
-
-int doAES128 = 1;
-
-#define CBC_DEBUG 0
-#if CBC_DEBUG
-static void dumpChainBuf(cipherInstance *cipher, char *op)
-{
- int t,j;
- int columns = cipher->blockLen / 32;
-
- printf("chainBuf %s: ", op);
- for (j = 0; j < columns; j++) {
- for(t = 0; t < 4; t++) {
- printf("%02x ", cipher->chainBlock[t][j]);
- }
- }
- printf("\n");
-}
-#else
-#define dumpChainBuf(c, o)
-#endif
-
-int makeKey(
- keyInstance *key,
- int keyLen, // in BITS
- int blockLen, // in BITS
- word8 *keyMaterial,
- int enable128Opt)
-{
- unsigned keyBytes;
- unsigned i;
-
- if (key == NULL) {
- return BAD_KEY_INSTANCE;
- }
- if(keyMaterial == NULL) {
- return BAD_KEY_MAT;
- }
- if ((keyLen == 128) || (keyLen == 192) || (keyLen == 256)) {
- key->keyLen = keyLen;
- } else {
- return BAD_KEY_MAT;
- }
- key->blockLen = blockLen;
- key->columns = blockLen / 32;
-
- /* initialize key schedule */
-#if !GLADMAN_AES_128_ENABLE
- if(enable128Opt &&
- (keyLen == MIN_AES_KEY_BITS) &&
- (blockLen == MIN_AES_BLOCK_BITS)) {
- /* optimized, 128 bit key and block size */
- word8 k[4][KC_128_OPT] __attribute__((aligned(4)));
-
- for(i = 0; i < (MIN_AES_KEY_BITS/8); i++) {
- /* speed this up */
- k[i % 4][i / 4] = keyMaterial[i];
- }
- rijndaelKeySched128 (k, key->keySched);
- memset(k, 0, 4 * KC_128_OPT);
- }
- else
-#endif /* !GLADMAN_AES_128_ENABLE */
- {
-
- /* general case */
- word8 k[4][MAXKC];
-
- keyBytes = keyLen / 8;
- for(i = 0; i < keyBytes; i++) {
- k[i % 4][i / 4] = keyMaterial[i];
- }
- rijndaelKeySched (k, key->keyLen, key->blockLen, key->keySched);
- memset(k, 0, 4 * MAXKC);
- }
- return TRUE;
-}
-
-/*
- * Simplified single-block encrypt/decrypt.
- */
-#define AES_CONSISTENCY_CHECK 1
-
-int rijndaelBlockEncrypt(
- keyInstance *key,
- word8 *input,
- word8 *outBuffer)
-{
- int t;
- unsigned j;
- word8 localBlock[4][MAXBC]; // working memory: encrypt/decrypt in place here
-
- #if AES_CONSISTENCY_CHECK
- if (key == NULL ||
- (key->keyLen != 128 && key->keyLen != 192 && key->keyLen != 256) ||
- (key->blockLen != 128 && key->blockLen != 192 && key->blockLen != 256)) {
- return BAD_KEY_INSTANCE;
- }
- #endif /* AES_CONSISTENCY_CHECK */
-
- #if defined(__ppc__) && defined(ALTIVEC_ENABLE)
- if(gHasAltivec && (key->blockLen == 128)) {
- vBlockEncrypt128(key, input, outBuffer);
- return 128;
- }
- #endif
-
- for (j = 0; j < key->columns; j++) {
- for(t = 0; t < 4; t++)
- /* parse input stream into rectangular array */
- localBlock[t][j] = input[4*j+t];
- }
- rijndaelEncrypt (localBlock, key->keyLen, key->blockLen, key->keySched);
- for (j = 0; j < key->columns; j++) {
- /* parse rectangular array into output ciphertext bytes */
- for(t = 0; t < 4; t++)
- outBuffer[4*j+t] = (word8) localBlock[t][j];
- }
- memset(localBlock, 0, 4 * MAXBC);
- return key->blockLen;
-}
-
-int rijndaelBlockDecrypt(
- keyInstance *key,
- word8 *input,
- word8 *outBuffer)
-{
- int t;
- unsigned j;
- word8 localBlock[4][MAXBC]; // working memory: encrypt/decrypt in place here
-
- #if AES_CONSISTENCY_CHECK
- if (key == NULL ||
- (key->keyLen != 128 && key->keyLen != 192 && key->keyLen != 256) ||
- (key->blockLen != 128 && key->blockLen != 192 && key->blockLen != 256)) {
- return BAD_KEY_INSTANCE;
- }
- #endif /* AES_CONSISTENCY_CHECK */
-
- #if defined(__ppc__) && defined(ALTIVEC_ENABLE)
- if(gHasAltivec && (cipher->blockLen == 128)) {
- vBlockDecrypt128(key, input, outBuffer);
- return 128;
- }
- #endif
-
- for (j = 0; j < key->columns; j++) {
- for(t = 0; t < 4; t++)
- /* parse input stream into rectangular array */
- localBlock[t][j] = input[4*j+t];
- }
- rijndaelDecrypt (localBlock, key->keyLen, key->blockLen, key->keySched);
- for (j = 0; j < key->columns; j++) {
- /* parse rectangular array into output ciphertext bytes */
- for(t = 0; t < 4; t++)
- outBuffer[4*j+t] = (word8) localBlock[t][j];
- }
- memset(localBlock, 0, 4 * MAXBC);
- return key->blockLen;
-}
-
-#if !GLADMAN_AES_128_ENABLE
-/*
- * Optimized routines for 128 bit block and 128 bit key.
- */
-int rijndaelBlockEncrypt128(
- keyInstance *key,
- word8 *input,
- word8 *outBuffer)
-{
- int j;
- word8 localBlock[4][BC_128_OPT] __attribute__((aligned(4)));
- word8 *row0 = localBlock[0];
- word8 *row1 = localBlock[1];
- word8 *row2 = localBlock[2];
- word8 *row3 = localBlock[3];
-
- /* parse input stream into rectangular array */
- for (j = 0; j < BC_128_OPT; j++) {
- *row0++ = *input++;
- *row1++ = *input++;
- *row2++ = *input++;
- *row3++ = *input++;
- }
- rijndaelEncrypt128 (localBlock, key->keySched);
-
- /* parse rectangular array into output ciphertext bytes */
- row0 = localBlock[0];
- row1 = localBlock[1];
- row2 = localBlock[2];
- row3 = localBlock[3];
-
- for (j = 0; j < BC_128_OPT; j++) {
- *outBuffer++ = *row0++;
- *outBuffer++ = *row1++;
- *outBuffer++ = *row2++;
- *outBuffer++ = *row3++;
- }
- memset(localBlock, 0, 4*BC_128_OPT);
- return MIN_AES_BLOCK_BITS;
-}
-
-int rijndaelBlockDecrypt128(
- keyInstance *key,
- word8 *input,
- word8 *outBuffer)
-{
- int j;
- word8 localBlock[4][BC_128_OPT] __attribute__((aligned(4)));
- word8 *row0 = localBlock[0];
- word8 *row1 = localBlock[1];
- word8 *row2 = localBlock[2];
- word8 *row3 = localBlock[3];
-
- /* parse input stream into rectangular array */
- for (j = 0; j < BC_128_OPT; j++) {
- *row0++ = *input++;
- *row1++ = *input++;
- *row2++ = *input++;
- *row3++ = *input++;
- }
-
- rijndaelDecrypt128 (localBlock, key->keySched);
-
- /* parse rectangular array into output ciphertext bytes */
- row0 = localBlock[0];
- row1 = localBlock[1];
- row2 = localBlock[2];
- row3 = localBlock[3];
-
- for (j = 0; j < BC_128_OPT; j++) {
- *outBuffer++ = *row0++;
- *outBuffer++ = *row1++;
- *outBuffer++ = *row2++;
- *outBuffer++ = *row3++;
- }
- memset(localBlock, 0, 4*BC_128_OPT);
- return MIN_AES_BLOCK_BITS;
-}
-#endif /* !GLADMAN_AES_128_ENABLE */
-
projects / apple / security.git / blobdiff