diff options
Diffstat (limited to 'media/gmp-clearkey/0.1/openaes/oaes_lib.c')
| -rw-r--r-- | media/gmp-clearkey/0.1/openaes/oaes_lib.c | 1393 |
1 files changed, 0 insertions, 1393 deletions
diff --git a/media/gmp-clearkey/0.1/openaes/oaes_lib.c b/media/gmp-clearkey/0.1/openaes/oaes_lib.c deleted file mode 100644 index aa13623ce8..0000000000 --- a/media/gmp-clearkey/0.1/openaes/oaes_lib.c +++ /dev/null @@ -1,1393 +0,0 @@ -/* - * --------------------------------------------------------------------------- - * OpenAES License - * --------------------------------------------------------------------------- - * Copyright (c) 2012, Nabil S. Al Ramli, www.nalramli.com - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * - Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER 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. - * --------------------------------------------------------------------------- - */ - -#include <stdlib.h> -#include <stddef.h> -#include <time.h> -#include <string.h> - -#include "mozilla/Sprintf.h" - -#ifdef WIN32 -#include <process.h> -#endif - -#include "oaes_config.h" -#include "oaes_lib.h" - -#ifdef OAES_HAVE_ISAAC -#include "rand.h" -#define OAES_RAND(x) rand(x) -#else -#define OAES_RAND(x) rand() -#endif // OAES_HAVE_ISAAC - -#define OAES_RKEY_LEN 4 -#define OAES_COL_LEN 4 -#define OAES_ROUND_BASE 7 - -// the block is padded -#define OAES_FLAG_PAD 0x01 - -#ifndef min -# define min(a,b) (((a)<(b)) ? (a) : (b)) -#endif /* min */ - -typedef struct _oaes_key -{ - size_t data_len; - uint8_t *data; - size_t exp_data_len; - uint8_t *exp_data; - size_t num_keys; - size_t key_base; -} oaes_key; - -typedef struct _oaes_ctx -{ -#ifdef OAES_HAVE_ISAAC - randctx * rctx; -#endif // OAES_HAVE_ISAAC - -#ifdef OAES_DEBUG - oaes_step_cb step_cb; -#endif // OAES_DEBUG - - oaes_key * key; - OAES_OPTION options; - uint8_t iv[OAES_BLOCK_SIZE]; -} oaes_ctx; - -// "OAES<8-bit header version><8-bit type><16-bit options><8-bit flags><56-bit reserved>" -static uint8_t oaes_header[OAES_BLOCK_SIZE] = { - // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, - /*0*/ 0x4f, 0x41, 0x45, 0x53, 0x01, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, -}; -static uint8_t oaes_gf_8[] = { - 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36 }; - -static uint8_t oaes_sub_byte_value[16][16] = { - // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, - /*0*/ 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, - /*1*/ 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, - /*2*/ 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, - /*3*/ 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, - /*4*/ 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, - /*5*/ 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, - /*6*/ 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, - /*7*/ 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, - /*8*/ 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, - /*9*/ 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, - /*a*/ 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, - /*b*/ 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, - /*c*/ 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, - /*d*/ 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, - /*e*/ 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, - /*f*/ 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16, -}; - -static uint8_t oaes_inv_sub_byte_value[16][16] = { - // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, - /*0*/ 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, - /*1*/ 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, - /*2*/ 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, - /*3*/ 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, - /*4*/ 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, - /*5*/ 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, - /*6*/ 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, - /*7*/ 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, - /*8*/ 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, - /*9*/ 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, - /*a*/ 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, - /*b*/ 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, - /*c*/ 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, - /*d*/ 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, - /*e*/ 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, - /*f*/ 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d, -}; - -static uint8_t oaes_gf_mul_2[16][16] = { - // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, - /*0*/ 0x00, 0x02, 0x04, 0x06, 0x08, 0x0a, 0x0c, 0x0e, 0x10, 0x12, 0x14, 0x16, 0x18, 0x1a, 0x1c, 0x1e, - /*1*/ 0x20, 0x22, 0x24, 0x26, 0x28, 0x2a, 0x2c, 0x2e, 0x30, 0x32, 0x34, 0x36, 0x38, 0x3a, 0x3c, 0x3e, - /*2*/ 0x40, 0x42, 0x44, 0x46, 0x48, 0x4a, 0x4c, 0x4e, 0x50, 0x52, 0x54, 0x56, 0x58, 0x5a, 0x5c, 0x5e, - /*3*/ 0x60, 0x62, 0x64, 0x66, 0x68, 0x6a, 0x6c, 0x6e, 0x70, 0x72, 0x74, 0x76, 0x78, 0x7a, 0x7c, 0x7e, - /*4*/ 0x80, 0x82, 0x84, 0x86, 0x88, 0x8a, 0x8c, 0x8e, 0x90, 0x92, 0x94, 0x96, 0x98, 0x9a, 0x9c, 0x9e, - /*5*/ 0xa0, 0xa2, 0xa4, 0xa6, 0xa8, 0xaa, 0xac, 0xae, 0xb0, 0xb2, 0xb4, 0xb6, 0xb8, 0xba, 0xbc, 0xbe, - /*6*/ 0xc0, 0xc2, 0xc4, 0xc6, 0xc8, 0xca, 0xcc, 0xce, 0xd0, 0xd2, 0xd4, 0xd6, 0xd8, 0xda, 0xdc, 0xde, - /*7*/ 0xe0, 0xe2, 0xe4, 0xe6, 0xe8, 0xea, 0xec, 0xee, 0xf0, 0xf2, 0xf4, 0xf6, 0xf8, 0xfa, 0xfc, 0xfe, - /*8*/ 0x1b, 0x19, 0x1f, 0x1d, 0x13, 0x11, 0x17, 0x15, 0x0b, 0x09, 0x0f, 0x0d, 0x03, 0x01, 0x07, 0x05, - /*9*/ 0x3b, 0x39, 0x3f, 0x3d, 0x33, 0x31, 0x37, 0x35, 0x2b, 0x29, 0x2f, 0x2d, 0x23, 0x21, 0x27, 0x25, - /*a*/ 0x5b, 0x59, 0x5f, 0x5d, 0x53, 0x51, 0x57, 0x55, 0x4b, 0x49, 0x4f, 0x4d, 0x43, 0x41, 0x47, 0x45, - /*b*/ 0x7b, 0x79, 0x7f, 0x7d, 0x73, 0x71, 0x77, 0x75, 0x6b, 0x69, 0x6f, 0x6d, 0x63, 0x61, 0x67, 0x65, - /*c*/ 0x9b, 0x99, 0x9f, 0x9d, 0x93, 0x91, 0x97, 0x95, 0x8b, 0x89, 0x8f, 0x8d, 0x83, 0x81, 0x87, 0x85, - /*d*/ 0xbb, 0xb9, 0xbf, 0xbd, 0xb3, 0xb1, 0xb7, 0xb5, 0xab, 0xa9, 0xaf, 0xad, 0xa3, 0xa1, 0xa7, 0xa5, - /*e*/ 0xdb, 0xd9, 0xdf, 0xdd, 0xd3, 0xd1, 0xd7, 0xd5, 0xcb, 0xc9, 0xcf, 0xcd, 0xc3, 0xc1, 0xc7, 0xc5, - /*f*/ 0xfb, 0xf9, 0xff, 0xfd, 0xf3, 0xf1, 0xf7, 0xf5, 0xeb, 0xe9, 0xef, 0xed, 0xe3, 0xe1, 0xe7, 0xe5, -}; - -static uint8_t oaes_gf_mul_3[16][16] = { - // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, - /*0*/ 0x00, 0x03, 0x06, 0x05, 0x0c, 0x0f, 0x0a, 0x09, 0x18, 0x1b, 0x1e, 0x1d, 0x14, 0x17, 0x12, 0x11, - /*1*/ 0x30, 0x33, 0x36, 0x35, 0x3c, 0x3f, 0x3a, 0x39, 0x28, 0x2b, 0x2e, 0x2d, 0x24, 0x27, 0x22, 0x21, - /*2*/ 0x60, 0x63, 0x66, 0x65, 0x6c, 0x6f, 0x6a, 0x69, 0x78, 0x7b, 0x7e, 0x7d, 0x74, 0x77, 0x72, 0x71, - /*3*/ 0x50, 0x53, 0x56, 0x55, 0x5c, 0x5f, 0x5a, 0x59, 0x48, 0x4b, 0x4e, 0x4d, 0x44, 0x47, 0x42, 0x41, - /*4*/ 0xc0, 0xc3, 0xc6, 0xc5, 0xcc, 0xcf, 0xca, 0xc9, 0xd8, 0xdb, 0xde, 0xdd, 0xd4, 0xd7, 0xd2, 0xd1, - /*5*/ 0xf0, 0xf3, 0xf6, 0xf5, 0xfc, 0xff, 0xfa, 0xf9, 0xe8, 0xeb, 0xee, 0xed, 0xe4, 0xe7, 0xe2, 0xe1, - /*6*/ 0xa0, 0xa3, 0xa6, 0xa5, 0xac, 0xaf, 0xaa, 0xa9, 0xb8, 0xbb, 0xbe, 0xbd, 0xb4, 0xb7, 0xb2, 0xb1, - /*7*/ 0x90, 0x93, 0x96, 0x95, 0x9c, 0x9f, 0x9a, 0x99, 0x88, 0x8b, 0x8e, 0x8d, 0x84, 0x87, 0x82, 0x81, - /*8*/ 0x9b, 0x98, 0x9d, 0x9e, 0x97, 0x94, 0x91, 0x92, 0x83, 0x80, 0x85, 0x86, 0x8f, 0x8c, 0x89, 0x8a, - /*9*/ 0xab, 0xa8, 0xad, 0xae, 0xa7, 0xa4, 0xa1, 0xa2, 0xb3, 0xb0, 0xb5, 0xb6, 0xbf, 0xbc, 0xb9, 0xba, - /*a*/ 0xfb, 0xf8, 0xfd, 0xfe, 0xf7, 0xf4, 0xf1, 0xf2, 0xe3, 0xe0, 0xe5, 0xe6, 0xef, 0xec, 0xe9, 0xea, - /*b*/ 0xcb, 0xc8, 0xcd, 0xce, 0xc7, 0xc4, 0xc1, 0xc2, 0xd3, 0xd0, 0xd5, 0xd6, 0xdf, 0xdc, 0xd9, 0xda, - /*c*/ 0x5b, 0x58, 0x5d, 0x5e, 0x57, 0x54, 0x51, 0x52, 0x43, 0x40, 0x45, 0x46, 0x4f, 0x4c, 0x49, 0x4a, - /*d*/ 0x6b, 0x68, 0x6d, 0x6e, 0x67, 0x64, 0x61, 0x62, 0x73, 0x70, 0x75, 0x76, 0x7f, 0x7c, 0x79, 0x7a, - /*e*/ 0x3b, 0x38, 0x3d, 0x3e, 0x37, 0x34, 0x31, 0x32, 0x23, 0x20, 0x25, 0x26, 0x2f, 0x2c, 0x29, 0x2a, - /*f*/ 0x0b, 0x08, 0x0d, 0x0e, 0x07, 0x04, 0x01, 0x02, 0x13, 0x10, 0x15, 0x16, 0x1f, 0x1c, 0x19, 0x1a, -}; - -static uint8_t oaes_gf_mul_9[16][16] = { - // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, - /*0*/ 0x00, 0x09, 0x12, 0x1b, 0x24, 0x2d, 0x36, 0x3f, 0x48, 0x41, 0x5a, 0x53, 0x6c, 0x65, 0x7e, 0x77, - /*1*/ 0x90, 0x99, 0x82, 0x8b, 0xb4, 0xbd, 0xa6, 0xaf, 0xd8, 0xd1, 0xca, 0xc3, 0xfc, 0xf5, 0xee, 0xe7, - /*2*/ 0x3b, 0x32, 0x29, 0x20, 0x1f, 0x16, 0x0d, 0x04, 0x73, 0x7a, 0x61, 0x68, 0x57, 0x5e, 0x45, 0x4c, - /*3*/ 0xab, 0xa2, 0xb9, 0xb0, 0x8f, 0x86, 0x9d, 0x94, 0xe3, 0xea, 0xf1, 0xf8, 0xc7, 0xce, 0xd5, 0xdc, - /*4*/ 0x76, 0x7f, 0x64, 0x6d, 0x52, 0x5b, 0x40, 0x49, 0x3e, 0x37, 0x2c, 0x25, 0x1a, 0x13, 0x08, 0x01, - /*5*/ 0xe6, 0xef, 0xf4, 0xfd, 0xc2, 0xcb, 0xd0, 0xd9, 0xae, 0xa7, 0xbc, 0xb5, 0x8a, 0x83, 0x98, 0x91, - /*6*/ 0x4d, 0x44, 0x5f, 0x56, 0x69, 0x60, 0x7b, 0x72, 0x05, 0x0c, 0x17, 0x1e, 0x21, 0x28, 0x33, 0x3a, - /*7*/ 0xdd, 0xd4, 0xcf, 0xc6, 0xf9, 0xf0, 0xeb, 0xe2, 0x95, 0x9c, 0x87, 0x8e, 0xb1, 0xb8, 0xa3, 0xaa, - /*8*/ 0xec, 0xe5, 0xfe, 0xf7, 0xc8, 0xc1, 0xda, 0xd3, 0xa4, 0xad, 0xb6, 0xbf, 0x80, 0x89, 0x92, 0x9b, - /*9*/ 0x7c, 0x75, 0x6e, 0x67, 0x58, 0x51, 0x4a, 0x43, 0x34, 0x3d, 0x26, 0x2f, 0x10, 0x19, 0x02, 0x0b, - /*a*/ 0xd7, 0xde, 0xc5, 0xcc, 0xf3, 0xfa, 0xe1, 0xe8, 0x9f, 0x96, 0x8d, 0x84, 0xbb, 0xb2, 0xa9, 0xa0, - /*b*/ 0x47, 0x4e, 0x55, 0x5c, 0x63, 0x6a, 0x71, 0x78, 0x0f, 0x06, 0x1d, 0x14, 0x2b, 0x22, 0x39, 0x30, - /*c*/ 0x9a, 0x93, 0x88, 0x81, 0xbe, 0xb7, 0xac, 0xa5, 0xd2, 0xdb, 0xc0, 0xc9, 0xf6, 0xff, 0xe4, 0xed, - /*d*/ 0x0a, 0x03, 0x18, 0x11, 0x2e, 0x27, 0x3c, 0x35, 0x42, 0x4b, 0x50, 0x59, 0x66, 0x6f, 0x74, 0x7d, - /*e*/ 0xa1, 0xa8, 0xb3, 0xba, 0x85, 0x8c, 0x97, 0x9e, 0xe9, 0xe0, 0xfb, 0xf2, 0xcd, 0xc4, 0xdf, 0xd6, - /*f*/ 0x31, 0x38, 0x23, 0x2a, 0x15, 0x1c, 0x07, 0x0e, 0x79, 0x70, 0x6b, 0x62, 0x5d, 0x54, 0x4f, 0x46, -}; - -static uint8_t oaes_gf_mul_b[16][16] = { - // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, - /*0*/ 0x00, 0x0b, 0x16, 0x1d, 0x2c, 0x27, 0x3a, 0x31, 0x58, 0x53, 0x4e, 0x45, 0x74, 0x7f, 0x62, 0x69, - /*1*/ 0xb0, 0xbb, 0xa6, 0xad, 0x9c, 0x97, 0x8a, 0x81, 0xe8, 0xe3, 0xfe, 0xf5, 0xc4, 0xcf, 0xd2, 0xd9, - /*2*/ 0x7b, 0x70, 0x6d, 0x66, 0x57, 0x5c, 0x41, 0x4a, 0x23, 0x28, 0x35, 0x3e, 0x0f, 0x04, 0x19, 0x12, - /*3*/ 0xcb, 0xc0, 0xdd, 0xd6, 0xe7, 0xec, 0xf1, 0xfa, 0x93, 0x98, 0x85, 0x8e, 0xbf, 0xb4, 0xa9, 0xa2, - /*4*/ 0xf6, 0xfd, 0xe0, 0xeb, 0xda, 0xd1, 0xcc, 0xc7, 0xae, 0xa5, 0xb8, 0xb3, 0x82, 0x89, 0x94, 0x9f, - /*5*/ 0x46, 0x4d, 0x50, 0x5b, 0x6a, 0x61, 0x7c, 0x77, 0x1e, 0x15, 0x08, 0x03, 0x32, 0x39, 0x24, 0x2f, - /*6*/ 0x8d, 0x86, 0x9b, 0x90, 0xa1, 0xaa, 0xb7, 0xbc, 0xd5, 0xde, 0xc3, 0xc8, 0xf9, 0xf2, 0xef, 0xe4, - /*7*/ 0x3d, 0x36, 0x2b, 0x20, 0x11, 0x1a, 0x07, 0x0c, 0x65, 0x6e, 0x73, 0x78, 0x49, 0x42, 0x5f, 0x54, - /*8*/ 0xf7, 0xfc, 0xe1, 0xea, 0xdb, 0xd0, 0xcd, 0xc6, 0xaf, 0xa4, 0xb9, 0xb2, 0x83, 0x88, 0x95, 0x9e, - /*9*/ 0x47, 0x4c, 0x51, 0x5a, 0x6b, 0x60, 0x7d, 0x76, 0x1f, 0x14, 0x09, 0x02, 0x33, 0x38, 0x25, 0x2e, - /*a*/ 0x8c, 0x87, 0x9a, 0x91, 0xa0, 0xab, 0xb6, 0xbd, 0xd4, 0xdf, 0xc2, 0xc9, 0xf8, 0xf3, 0xee, 0xe5, - /*b*/ 0x3c, 0x37, 0x2a, 0x21, 0x10, 0x1b, 0x06, 0x0d, 0x64, 0x6f, 0x72, 0x79, 0x48, 0x43, 0x5e, 0x55, - /*c*/ 0x01, 0x0a, 0x17, 0x1c, 0x2d, 0x26, 0x3b, 0x30, 0x59, 0x52, 0x4f, 0x44, 0x75, 0x7e, 0x63, 0x68, - /*d*/ 0xb1, 0xba, 0xa7, 0xac, 0x9d, 0x96, 0x8b, 0x80, 0xe9, 0xe2, 0xff, 0xf4, 0xc5, 0xce, 0xd3, 0xd8, - /*e*/ 0x7a, 0x71, 0x6c, 0x67, 0x56, 0x5d, 0x40, 0x4b, 0x22, 0x29, 0x34, 0x3f, 0x0e, 0x05, 0x18, 0x13, - /*f*/ 0xca, 0xc1, 0xdc, 0xd7, 0xe6, 0xed, 0xf0, 0xfb, 0x92, 0x99, 0x84, 0x8f, 0xbe, 0xb5, 0xa8, 0xa3, -}; - -static uint8_t oaes_gf_mul_d[16][16] = { - // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, - /*0*/ 0x00, 0x0d, 0x1a, 0x17, 0x34, 0x39, 0x2e, 0x23, 0x68, 0x65, 0x72, 0x7f, 0x5c, 0x51, 0x46, 0x4b, - /*1*/ 0xd0, 0xdd, 0xca, 0xc7, 0xe4, 0xe9, 0xfe, 0xf3, 0xb8, 0xb5, 0xa2, 0xaf, 0x8c, 0x81, 0x96, 0x9b, - /*2*/ 0xbb, 0xb6, 0xa1, 0xac, 0x8f, 0x82, 0x95, 0x98, 0xd3, 0xde, 0xc9, 0xc4, 0xe7, 0xea, 0xfd, 0xf0, - /*3*/ 0x6b, 0x66, 0x71, 0x7c, 0x5f, 0x52, 0x45, 0x48, 0x03, 0x0e, 0x19, 0x14, 0x37, 0x3a, 0x2d, 0x20, - /*4*/ 0x6d, 0x60, 0x77, 0x7a, 0x59, 0x54, 0x43, 0x4e, 0x05, 0x08, 0x1f, 0x12, 0x31, 0x3c, 0x2b, 0x26, - /*5*/ 0xbd, 0xb0, 0xa7, 0xaa, 0x89, 0x84, 0x93, 0x9e, 0xd5, 0xd8, 0xcf, 0xc2, 0xe1, 0xec, 0xfb, 0xf6, - /*6*/ 0xd6, 0xdb, 0xcc, 0xc1, 0xe2, 0xef, 0xf8, 0xf5, 0xbe, 0xb3, 0xa4, 0xa9, 0x8a, 0x87, 0x90, 0x9d, - /*7*/ 0x06, 0x0b, 0x1c, 0x11, 0x32, 0x3f, 0x28, 0x25, 0x6e, 0x63, 0x74, 0x79, 0x5a, 0x57, 0x40, 0x4d, - /*8*/ 0xda, 0xd7, 0xc0, 0xcd, 0xee, 0xe3, 0xf4, 0xf9, 0xb2, 0xbf, 0xa8, 0xa5, 0x86, 0x8b, 0x9c, 0x91, - /*9*/ 0x0a, 0x07, 0x10, 0x1d, 0x3e, 0x33, 0x24, 0x29, 0x62, 0x6f, 0x78, 0x75, 0x56, 0x5b, 0x4c, 0x41, - /*a*/ 0x61, 0x6c, 0x7b, 0x76, 0x55, 0x58, 0x4f, 0x42, 0x09, 0x04, 0x13, 0x1e, 0x3d, 0x30, 0x27, 0x2a, - /*b*/ 0xb1, 0xbc, 0xab, 0xa6, 0x85, 0x88, 0x9f, 0x92, 0xd9, 0xd4, 0xc3, 0xce, 0xed, 0xe0, 0xf7, 0xfa, - /*c*/ 0xb7, 0xba, 0xad, 0xa0, 0x83, 0x8e, 0x99, 0x94, 0xdf, 0xd2, 0xc5, 0xc8, 0xeb, 0xe6, 0xf1, 0xfc, - /*d*/ 0x67, 0x6a, 0x7d, 0x70, 0x53, 0x5e, 0x49, 0x44, 0x0f, 0x02, 0x15, 0x18, 0x3b, 0x36, 0x21, 0x2c, - /*e*/ 0x0c, 0x01, 0x16, 0x1b, 0x38, 0x35, 0x22, 0x2f, 0x64, 0x69, 0x7e, 0x73, 0x50, 0x5d, 0x4a, 0x47, - /*f*/ 0xdc, 0xd1, 0xc6, 0xcb, 0xe8, 0xe5, 0xf2, 0xff, 0xb4, 0xb9, 0xae, 0xa3, 0x80, 0x8d, 0x9a, 0x97, -}; - -static uint8_t oaes_gf_mul_e[16][16] = { - // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, a, b, c, d, e, f, - /*0*/ 0x00, 0x0e, 0x1c, 0x12, 0x38, 0x36, 0x24, 0x2a, 0x70, 0x7e, 0x6c, 0x62, 0x48, 0x46, 0x54, 0x5a, - /*1*/ 0xe0, 0xee, 0xfc, 0xf2, 0xd8, 0xd6, 0xc4, 0xca, 0x90, 0x9e, 0x8c, 0x82, 0xa8, 0xa6, 0xb4, 0xba, - /*2*/ 0xdb, 0xd5, 0xc7, 0xc9, 0xe3, 0xed, 0xff, 0xf1, 0xab, 0xa5, 0xb7, 0xb9, 0x93, 0x9d, 0x8f, 0x81, - /*3*/ 0x3b, 0x35, 0x27, 0x29, 0x03, 0x0d, 0x1f, 0x11, 0x4b, 0x45, 0x57, 0x59, 0x73, 0x7d, 0x6f, 0x61, - /*4*/ 0xad, 0xa3, 0xb1, 0xbf, 0x95, 0x9b, 0x89, 0x87, 0xdd, 0xd3, 0xc1, 0xcf, 0xe5, 0xeb, 0xf9, 0xf7, - /*5*/ 0x4d, 0x43, 0x51, 0x5f, 0x75, 0x7b, 0x69, 0x67, 0x3d, 0x33, 0x21, 0x2f, 0x05, 0x0b, 0x19, 0x17, - /*6*/ 0x76, 0x78, 0x6a, 0x64, 0x4e, 0x40, 0x52, 0x5c, 0x06, 0x08, 0x1a, 0x14, 0x3e, 0x30, 0x22, 0x2c, - /*7*/ 0x96, 0x98, 0x8a, 0x84, 0xae, 0xa0, 0xb2, 0xbc, 0xe6, 0xe8, 0xfa, 0xf4, 0xde, 0xd0, 0xc2, 0xcc, - /*8*/ 0x41, 0x4f, 0x5d, 0x53, 0x79, 0x77, 0x65, 0x6b, 0x31, 0x3f, 0x2d, 0x23, 0x09, 0x07, 0x15, 0x1b, - /*9*/ 0xa1, 0xaf, 0xbd, 0xb3, 0x99, 0x97, 0x85, 0x8b, 0xd1, 0xdf, 0xcd, 0xc3, 0xe9, 0xe7, 0xf5, 0xfb, - /*a*/ 0x9a, 0x94, 0x86, 0x88, 0xa2, 0xac, 0xbe, 0xb0, 0xea, 0xe4, 0xf6, 0xf8, 0xd2, 0xdc, 0xce, 0xc0, - /*b*/ 0x7a, 0x74, 0x66, 0x68, 0x42, 0x4c, 0x5e, 0x50, 0x0a, 0x04, 0x16, 0x18, 0x32, 0x3c, 0x2e, 0x20, - /*c*/ 0xec, 0xe2, 0xf0, 0xfe, 0xd4, 0xda, 0xc8, 0xc6, 0x9c, 0x92, 0x80, 0x8e, 0xa4, 0xaa, 0xb8, 0xb6, - /*d*/ 0x0c, 0x02, 0x10, 0x1e, 0x34, 0x3a, 0x28, 0x26, 0x7c, 0x72, 0x60, 0x6e, 0x44, 0x4a, 0x58, 0x56, - /*e*/ 0x37, 0x39, 0x2b, 0x25, 0x0f, 0x01, 0x13, 0x1d, 0x47, 0x49, 0x5b, 0x55, 0x7f, 0x71, 0x63, 0x6d, - /*f*/ 0xd7, 0xd9, 0xcb, 0xc5, 0xef, 0xe1, 0xf3, 0xfd, 0xa7, 0xa9, 0xbb, 0xb5, 0x9f, 0x91, 0x83, 0x8d, -}; - -static OAES_RET oaes_sub_byte( uint8_t * byte ) -{ - size_t _x, _y; - - if( NULL == byte ) - return OAES_RET_ARG1; - - _x = _y = *byte; - _x &= 0x0f; - _y &= 0xf0; - _y >>= 4; - *byte = oaes_sub_byte_value[_y][_x]; - - return OAES_RET_SUCCESS; -} - -static OAES_RET oaes_inv_sub_byte( uint8_t * byte ) -{ - size_t _x, _y; - - if( NULL == byte ) - return OAES_RET_ARG1; - - _x = _y = *byte; - _x &= 0x0f; - _y &= 0xf0; - _y >>= 4; - *byte = oaes_inv_sub_byte_value[_y][_x]; - - return OAES_RET_SUCCESS; -} - -static OAES_RET oaes_word_rot_left( uint8_t word[OAES_COL_LEN] ) -{ - uint8_t _temp[OAES_COL_LEN]; - - if( NULL == word ) - return OAES_RET_ARG1; - - memcpy( _temp, word + 1, OAES_COL_LEN - 1 ); - _temp[OAES_COL_LEN - 1] = word[0]; - memcpy( word, _temp, OAES_COL_LEN ); - - return OAES_RET_SUCCESS; -} - -static OAES_RET oaes_shift_rows( uint8_t block[OAES_BLOCK_SIZE] ) -{ - uint8_t _temp[OAES_BLOCK_SIZE]; - - if( NULL == block ) - return OAES_RET_ARG1; - - _temp[0x00] = block[0x00]; - _temp[0x01] = block[0x05]; - _temp[0x02] = block[0x0a]; - _temp[0x03] = block[0x0f]; - _temp[0x04] = block[0x04]; - _temp[0x05] = block[0x09]; - _temp[0x06] = block[0x0e]; - _temp[0x07] = block[0x03]; - _temp[0x08] = block[0x08]; - _temp[0x09] = block[0x0d]; - _temp[0x0a] = block[0x02]; - _temp[0x0b] = block[0x07]; - _temp[0x0c] = block[0x0c]; - _temp[0x0d] = block[0x01]; - _temp[0x0e] = block[0x06]; - _temp[0x0f] = block[0x0b]; - memcpy( block, _temp, OAES_BLOCK_SIZE ); - - return OAES_RET_SUCCESS; -} - -static OAES_RET oaes_inv_shift_rows( uint8_t block[OAES_BLOCK_SIZE] ) -{ - uint8_t _temp[OAES_BLOCK_SIZE]; - - if( NULL == block ) - return OAES_RET_ARG1; - - _temp[0x00] = block[0x00]; - _temp[0x01] = block[0x0d]; - _temp[0x02] = block[0x0a]; - _temp[0x03] = block[0x07]; - _temp[0x04] = block[0x04]; - _temp[0x05] = block[0x01]; - _temp[0x06] = block[0x0e]; - _temp[0x07] = block[0x0b]; - _temp[0x08] = block[0x08]; - _temp[0x09] = block[0x05]; - _temp[0x0a] = block[0x02]; - _temp[0x0b] = block[0x0f]; - _temp[0x0c] = block[0x0c]; - _temp[0x0d] = block[0x09]; - _temp[0x0e] = block[0x06]; - _temp[0x0f] = block[0x03]; - memcpy( block, _temp, OAES_BLOCK_SIZE ); - - return OAES_RET_SUCCESS; -} - -static uint8_t oaes_gf_mul(uint8_t left, uint8_t right) -{ - size_t _x, _y; - - _x = _y = left; - _x &= 0x0f; - _y &= 0xf0; - _y >>= 4; - - switch( right ) - { - case 0x02: - return oaes_gf_mul_2[_y][_x]; - break; - case 0x03: - return oaes_gf_mul_3[_y][_x]; - break; - case 0x09: - return oaes_gf_mul_9[_y][_x]; - break; - case 0x0b: - return oaes_gf_mul_b[_y][_x]; - break; - case 0x0d: - return oaes_gf_mul_d[_y][_x]; - break; - case 0x0e: - return oaes_gf_mul_e[_y][_x]; - break; - default: - return left; - break; - } -} - -static OAES_RET oaes_mix_cols( uint8_t word[OAES_COL_LEN] ) -{ - uint8_t _temp[OAES_COL_LEN]; - - if( NULL == word ) - return OAES_RET_ARG1; - - _temp[0] = oaes_gf_mul(word[0], 0x02) ^ oaes_gf_mul( word[1], 0x03 ) ^ - word[2] ^ word[3]; - _temp[1] = word[0] ^ oaes_gf_mul( word[1], 0x02 ) ^ - oaes_gf_mul( word[2], 0x03 ) ^ word[3]; - _temp[2] = word[0] ^ word[1] ^ - oaes_gf_mul( word[2], 0x02 ) ^ oaes_gf_mul( word[3], 0x03 ); - _temp[3] = oaes_gf_mul( word[0], 0x03 ) ^ word[1] ^ - word[2] ^ oaes_gf_mul( word[3], 0x02 ); - memcpy( word, _temp, OAES_COL_LEN ); - - return OAES_RET_SUCCESS; -} - -static OAES_RET oaes_inv_mix_cols( uint8_t word[OAES_COL_LEN] ) -{ - uint8_t _temp[OAES_COL_LEN]; - - if( NULL == word ) - return OAES_RET_ARG1; - - _temp[0] = oaes_gf_mul( word[0], 0x0e ) ^ oaes_gf_mul( word[1], 0x0b ) ^ - oaes_gf_mul( word[2], 0x0d ) ^ oaes_gf_mul( word[3], 0x09 ); - _temp[1] = oaes_gf_mul( word[0], 0x09 ) ^ oaes_gf_mul( word[1], 0x0e ) ^ - oaes_gf_mul( word[2], 0x0b ) ^ oaes_gf_mul( word[3], 0x0d ); - _temp[2] = oaes_gf_mul( word[0], 0x0d ) ^ oaes_gf_mul( word[1], 0x09 ) ^ - oaes_gf_mul( word[2], 0x0e ) ^ oaes_gf_mul( word[3], 0x0b ); - _temp[3] = oaes_gf_mul( word[0], 0x0b ) ^ oaes_gf_mul( word[1], 0x0d ) ^ - oaes_gf_mul( word[2], 0x09 ) ^ oaes_gf_mul( word[3], 0x0e ); - memcpy( word, _temp, OAES_COL_LEN ); - - return OAES_RET_SUCCESS; -} - -OAES_RET oaes_sprintf( - char * buf, size_t * buf_len, const uint8_t * data, size_t data_len ) -{ - size_t _i, _buf_len_in; - char _temp[4]; - - if( NULL == buf_len ) - return OAES_RET_ARG2; - - _buf_len_in = *buf_len; - *buf_len = data_len * 3 + data_len / OAES_BLOCK_SIZE + 1; - - if( NULL == buf ) - return OAES_RET_SUCCESS; - - if( *buf_len > _buf_len_in ) - return OAES_RET_BUF; - - if( NULL == data ) - return OAES_RET_ARG3; - - strcpy( buf, "" ); - - for( _i = 0; _i < data_len; _i++ ) - { - snprintf( _temp, sizeof(_temp), "%02x ", data[_i] ); - strcat( buf, _temp ); - if( _i && 0 == ( _i + 1 ) % OAES_BLOCK_SIZE ) - strcat( buf, "\n" ); - } - - return OAES_RET_SUCCESS; -} - -/* -#ifdef OAES_HAVE_ISAAC -static void oaes_get_seed( char buf[RANDSIZ + 1] ) -{ - struct timeb timer; - struct tm *gmTimer; - char * _test = NULL; - - ftime (&timer); - gmTimer = gmtime( &timer.time ); - _test = (char *) calloc( sizeof( char ), timer.millitm ); - sprintf( buf, "%04d%02d%02d%02d%02d%02d%03d%p%d", - gmTimer->tm_year + 1900, gmTimer->tm_mon + 1, gmTimer->tm_mday, - gmTimer->tm_hour, gmTimer->tm_min, gmTimer->tm_sec, timer.millitm, - _test + timer.millitm, getpid() ); - - if( _test ) - free( _test ); -} -#else -static uint32_t oaes_get_seed() -{ - struct timeb timer; - struct tm *gmTimer; - char * _test = NULL; - uint32_t _ret = 0; - - ftime (&timer); - gmTimer = gmtime( &timer.time ); - _test = (char *) calloc( sizeof( char ), timer.millitm ); - _ret = gmTimer->tm_year + 1900 + gmTimer->tm_mon + 1 + gmTimer->tm_mday + - gmTimer->tm_hour + gmTimer->tm_min + gmTimer->tm_sec + timer.millitm + - (uint32_t) ( _test + timer.millitm ) + getpid(); - - if( _test ) - free( _test ); - - return _ret; -} -#endif // OAES_HAVE_ISAAC -*/ - -static OAES_RET oaes_key_destroy( oaes_key ** key ) -{ - if( NULL == *key ) - return OAES_RET_SUCCESS; - - if( (*key)->data ) - { - free( (*key)->data ); - (*key)->data = NULL; - } - - if( (*key)->exp_data ) - { - free( (*key)->exp_data ); - (*key)->exp_data = NULL; - } - - (*key)->data_len = 0; - (*key)->exp_data_len = 0; - (*key)->num_keys = 0; - (*key)->key_base = 0; - free( *key ); - *key = NULL; - - return OAES_RET_SUCCESS; -} - -static OAES_RET oaes_key_expand( OAES_CTX * ctx ) -{ - size_t _i, _j; - oaes_ctx * _ctx = (oaes_ctx *) ctx; - - if( NULL == _ctx ) - return OAES_RET_ARG1; - - if( NULL == _ctx->key ) - return OAES_RET_NOKEY; - - _ctx->key->key_base = _ctx->key->data_len / OAES_RKEY_LEN; - _ctx->key->num_keys = _ctx->key->key_base + OAES_ROUND_BASE; - - _ctx->key->exp_data_len = _ctx->key->num_keys * OAES_RKEY_LEN * OAES_COL_LEN; - _ctx->key->exp_data = (uint8_t *) - calloc( _ctx->key->exp_data_len, sizeof( uint8_t )); - - if( NULL == _ctx->key->exp_data ) - return OAES_RET_MEM; - - // the first _ctx->key->data_len are a direct copy - memcpy( _ctx->key->exp_data, _ctx->key->data, _ctx->key->data_len ); - - // apply ExpandKey algorithm for remainder - for( _i = _ctx->key->key_base; _i < _ctx->key->num_keys * OAES_RKEY_LEN; _i++ ) - { - uint8_t _temp[OAES_COL_LEN]; - - memcpy( _temp, - _ctx->key->exp_data + ( _i - 1 ) * OAES_RKEY_LEN, OAES_COL_LEN ); - - // transform key column - if( 0 == _i % _ctx->key->key_base ) - { - oaes_word_rot_left( _temp ); - - for( _j = 0; _j < OAES_COL_LEN; _j++ ) - oaes_sub_byte( _temp + _j ); - - _temp[0] = _temp[0] ^ oaes_gf_8[ _i / _ctx->key->key_base - 1 ]; - } - else if( _ctx->key->key_base > 6 && 4 == _i % _ctx->key->key_base ) - { - for( _j = 0; _j < OAES_COL_LEN; _j++ ) - oaes_sub_byte( _temp + _j ); - } - - for( _j = 0; _j < OAES_COL_LEN; _j++ ) - { - _ctx->key->exp_data[ _i * OAES_RKEY_LEN + _j ] = - _ctx->key->exp_data[ ( _i - _ctx->key->key_base ) * - OAES_RKEY_LEN + _j ] ^ _temp[_j]; - } - } - - return OAES_RET_SUCCESS; -} - -static OAES_RET oaes_key_gen( OAES_CTX * ctx, size_t key_size ) -{ - size_t _i; - oaes_key * _key = NULL; - oaes_ctx * _ctx = (oaes_ctx *) ctx; - OAES_RET _rc = OAES_RET_SUCCESS; - - if( NULL == _ctx ) - return OAES_RET_ARG1; - - _key = (oaes_key *) calloc( sizeof( oaes_key ), 1 ); - - if( NULL == _key ) - return OAES_RET_MEM; - - if( _ctx->key ) - oaes_key_destroy( &(_ctx->key) ); - - _key->data_len = key_size; - _key->data = (uint8_t *) calloc( key_size, sizeof( uint8_t )); - - if( NULL == _key->data ) - { - oaes_key_destroy( &_key ); - return OAES_RET_MEM; - } - - for( _i = 0; _i < key_size; _i++ ) - _key->data[_i] = (uint8_t) OAES_RAND(_ctx->rctx); - - _ctx->key = _key; - _rc = _rc || oaes_key_expand( ctx ); - - if( _rc != OAES_RET_SUCCESS ) - { - oaes_key_destroy( &(_ctx->key) ); - return _rc; - } - - return OAES_RET_SUCCESS; -} - -OAES_RET oaes_key_gen_128( OAES_CTX * ctx ) -{ - return oaes_key_gen( ctx, 16 ); -} - -OAES_RET oaes_key_gen_192( OAES_CTX * ctx ) -{ - return oaes_key_gen( ctx, 24 ); -} - -OAES_RET oaes_key_gen_256( OAES_CTX * ctx ) -{ - return oaes_key_gen( ctx, 32 ); -} - -OAES_RET oaes_key_export( OAES_CTX * ctx, - uint8_t * data, size_t * data_len ) -{ - size_t _data_len_in; - oaes_ctx * _ctx = (oaes_ctx *) ctx; - - if( NULL == _ctx ) - return OAES_RET_ARG1; - - if( NULL == _ctx->key ) - return OAES_RET_NOKEY; - - if( NULL == data_len ) - return OAES_RET_ARG3; - - _data_len_in = *data_len; - // data + header - *data_len = _ctx->key->data_len + OAES_BLOCK_SIZE; - - if( NULL == data ) - return OAES_RET_SUCCESS; - - if( _data_len_in < *data_len ) - return OAES_RET_BUF; - - // header - memcpy( data, oaes_header, OAES_BLOCK_SIZE ); - data[5] = 0x01; - data[7] = _ctx->key->data_len; - memcpy( data + OAES_BLOCK_SIZE, _ctx->key->data, _ctx->key->data_len ); - - return OAES_RET_SUCCESS; -} - -OAES_RET oaes_key_export_data( OAES_CTX * ctx, - uint8_t * data, size_t * data_len ) -{ - size_t _data_len_in; - oaes_ctx * _ctx = (oaes_ctx *) ctx; - - if( NULL == _ctx ) - return OAES_RET_ARG1; - - if( NULL == _ctx->key ) - return OAES_RET_NOKEY; - - if( NULL == data_len ) - return OAES_RET_ARG3; - - _data_len_in = *data_len; - *data_len = _ctx->key->data_len; - - if( NULL == data ) - return OAES_RET_SUCCESS; - - if( _data_len_in < *data_len ) - return OAES_RET_BUF; - - memcpy( data, _ctx->key->data, *data_len ); - - return OAES_RET_SUCCESS; -} - -OAES_RET oaes_key_import( OAES_CTX * ctx, - const uint8_t * data, size_t data_len ) -{ - oaes_ctx * _ctx = (oaes_ctx *) ctx; - OAES_RET _rc = OAES_RET_SUCCESS; - int _key_length; - - if( NULL == _ctx ) - return OAES_RET_ARG1; - - if( NULL == data ) - return OAES_RET_ARG2; - - switch( data_len ) - { - case 16 + OAES_BLOCK_SIZE: - case 24 + OAES_BLOCK_SIZE: - case 32 + OAES_BLOCK_SIZE: - break; - default: - return OAES_RET_ARG3; - } - - // header - if( 0 != memcmp( data, oaes_header, 4 ) ) - return OAES_RET_HEADER; - - // header version - switch( data[4] ) - { - case 0x01: - break; - default: - return OAES_RET_HEADER; - } - - // header type - switch( data[5] ) - { - case 0x01: - break; - default: - return OAES_RET_HEADER; - } - - // options - _key_length = data[7]; - switch( _key_length ) - { - case 16: - case 24: - case 32: - break; - default: - return OAES_RET_HEADER; - } - - if( data_len != _key_length + OAES_BLOCK_SIZE ) - return OAES_RET_ARG3; - - if( _ctx->key ) - oaes_key_destroy( &(_ctx->key) ); - - _ctx->key = (oaes_key *) calloc( sizeof( oaes_key ), 1 ); - - if( NULL == _ctx->key ) - return OAES_RET_MEM; - - _ctx->key->data_len = _key_length; - _ctx->key->data = (uint8_t *) - calloc( _key_length, sizeof( uint8_t )); - - if( NULL == _ctx->key->data ) - { - oaes_key_destroy( &(_ctx->key) ); - return OAES_RET_MEM; - } - - memcpy( _ctx->key->data, data + OAES_BLOCK_SIZE, _key_length ); - _rc = _rc || oaes_key_expand( ctx ); - - if( _rc != OAES_RET_SUCCESS ) - { - oaes_key_destroy( &(_ctx->key) ); - return _rc; - } - - return OAES_RET_SUCCESS; -} - -OAES_RET oaes_key_import_data( OAES_CTX * ctx, - const uint8_t * data, size_t data_len ) -{ - oaes_ctx * _ctx = (oaes_ctx *) ctx; - OAES_RET _rc = OAES_RET_SUCCESS; - - if( NULL == _ctx ) - return OAES_RET_ARG1; - - if( NULL == data ) - return OAES_RET_ARG2; - - switch( data_len ) - { - case 16: - case 24: - case 32: - break; - default: - return OAES_RET_ARG3; - } - - if( _ctx->key ) - oaes_key_destroy( &(_ctx->key) ); - - _ctx->key = (oaes_key *) calloc( sizeof( oaes_key ), 1 ); - - if( NULL == _ctx->key ) - return OAES_RET_MEM; - - _ctx->key->data_len = data_len; - _ctx->key->data = (uint8_t *) - calloc( data_len, sizeof( uint8_t )); - - if( NULL == _ctx->key->data ) - { - oaes_key_destroy( &(_ctx->key) ); - return OAES_RET_MEM; - } - - memcpy( _ctx->key->data, data, data_len ); - _rc = _rc || oaes_key_expand( ctx ); - - if( _rc != OAES_RET_SUCCESS ) - { - oaes_key_destroy( &(_ctx->key) ); - return _rc; - } - - return OAES_RET_SUCCESS; -} - -OAES_CTX * oaes_alloc() -{ - oaes_ctx * _ctx = (oaes_ctx *) calloc( sizeof( oaes_ctx ), 1 ); - - if( NULL == _ctx ) - return NULL; - -#ifdef OAES_HAVE_ISAAC - { - ub4 _i = 0; - char _seed[RANDSIZ + 1]; - - _ctx->rctx = (randctx *) calloc( sizeof( randctx ), 1 ); - - if( NULL == _ctx->rctx ) - { - free( _ctx ); - return NULL; - } - - oaes_get_seed( _seed ); - memset( _ctx->rctx->randrsl, 0, RANDSIZ ); - memcpy( _ctx->rctx->randrsl, _seed, RANDSIZ ); - randinit( _ctx->rctx, TRUE); - } -#else - //srand( oaes_get_seed() ); -#endif // OAES_HAVE_ISAAC - - _ctx->key = NULL; - oaes_set_option( _ctx, OAES_OPTION_CBC, NULL ); - -#ifdef OAES_DEBUG - _ctx->step_cb = NULL; - oaes_set_option( _ctx, OAES_OPTION_STEP_OFF, NULL ); -#endif // OAES_DEBUG - - return (OAES_CTX *) _ctx; -} - -OAES_RET oaes_free( OAES_CTX ** ctx ) -{ - oaes_ctx ** _ctx = (oaes_ctx **) ctx; - - if( NULL == _ctx ) - return OAES_RET_ARG1; - - if( NULL == *_ctx ) - return OAES_RET_SUCCESS; - - if( (*_ctx)->key ) - oaes_key_destroy( &((*_ctx)->key) ); - -#ifdef OAES_HAVE_ISAAC - if( (*_ctx)->rctx ) - { - free( (*_ctx)->rctx ); - (*_ctx)->rctx = NULL; - } -#endif // OAES_HAVE_ISAAC - - free( *_ctx ); - *_ctx = NULL; - - return OAES_RET_SUCCESS; -} - -OAES_RET oaes_set_option( OAES_CTX * ctx, - OAES_OPTION option, const void * value ) -{ - size_t _i; - oaes_ctx * _ctx = (oaes_ctx *) ctx; - - if( NULL == _ctx ) - return OAES_RET_ARG1; - - switch( option ) - { - case OAES_OPTION_ECB: - _ctx->options &= ~OAES_OPTION_CBC; - memset( _ctx->iv, 0, OAES_BLOCK_SIZE ); - break; - - case OAES_OPTION_CBC: - _ctx->options &= ~OAES_OPTION_ECB; - if( value ) - memcpy( _ctx->iv, value, OAES_BLOCK_SIZE ); - else - { - for( _i = 0; _i < OAES_BLOCK_SIZE; _i++ ) - _ctx->iv[_i] = (uint8_t) OAES_RAND(_ctx->rctx); - } - break; - -#ifdef OAES_DEBUG - - case OAES_OPTION_STEP_ON: - if( value ) - { - _ctx->options &= ~OAES_OPTION_STEP_OFF; - _ctx->step_cb = value; - } - else - { - _ctx->options &= ~OAES_OPTION_STEP_ON; - _ctx->options |= OAES_OPTION_STEP_OFF; - _ctx->step_cb = NULL; - return OAES_RET_ARG3; - } - break; - - case OAES_OPTION_STEP_OFF: - _ctx->options &= ~OAES_OPTION_STEP_ON; - _ctx->step_cb = NULL; - break; - -#endif // OAES_DEBUG - - default: - return OAES_RET_ARG2; - } - - _ctx->options |= option; - - return OAES_RET_SUCCESS; -} - -static OAES_RET oaes_encrypt_block( - OAES_CTX * ctx, uint8_t * c, size_t c_len ) -{ - size_t _i, _j; - oaes_ctx * _ctx = (oaes_ctx *) ctx; - - if( NULL == _ctx ) - return OAES_RET_ARG1; - - if( NULL == c ) - return OAES_RET_ARG2; - - if( c_len != OAES_BLOCK_SIZE ) - return OAES_RET_ARG3; - - if( NULL == _ctx->key ) - return OAES_RET_NOKEY; - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - _ctx->step_cb( c, "input", 1, NULL ); -#endif // OAES_DEBUG - - // AddRoundKey(State, K0) - for( _i = 0; _i < c_len; _i++ ) - c[_i] = c[_i] ^ _ctx->key->exp_data[_i]; - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - { - _ctx->step_cb( _ctx->key->exp_data, "k_sch", 1, NULL ); - _ctx->step_cb( c, "k_add", 1, NULL ); - } -#endif // OAES_DEBUG - - // for round = 1 step 1 to Nr–1 - for( _i = 1; _i < _ctx->key->num_keys - 1; _i++ ) - { - // SubBytes(state) - for( _j = 0; _j < c_len; _j++ ) - oaes_sub_byte( c + _j ); - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - _ctx->step_cb( c, "s_box", _i, NULL ); -#endif // OAES_DEBUG - - // ShiftRows(state) - oaes_shift_rows( c ); - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - _ctx->step_cb( c, "s_row", _i, NULL ); -#endif // OAES_DEBUG - - // MixColumns(state) - oaes_mix_cols( c ); - oaes_mix_cols( c + 4 ); - oaes_mix_cols( c + 8 ); - oaes_mix_cols( c + 12 ); - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - _ctx->step_cb( c, "m_col", _i, NULL ); -#endif // OAES_DEBUG - - // AddRoundKey(state, w[round*Nb, (round+1)*Nb-1]) - for( _j = 0; _j < c_len; _j++ ) - c[_j] = c[_j] ^ - _ctx->key->exp_data[_i * OAES_RKEY_LEN * OAES_COL_LEN + _j]; - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - { - _ctx->step_cb( _ctx->key->exp_data + _i * OAES_RKEY_LEN * OAES_COL_LEN, - "k_sch", _i, NULL ); - _ctx->step_cb( c, "k_add", _i, NULL ); - } -#endif // OAES_DEBUG - - } - - // SubBytes(state) - for( _i = 0; _i < c_len; _i++ ) - oaes_sub_byte( c + _i ); - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - _ctx->step_cb( c, "s_box", _ctx->key->num_keys - 1, NULL ); -#endif // OAES_DEBUG - - // ShiftRows(state) - oaes_shift_rows( c ); - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - _ctx->step_cb( c, "s_row", _ctx->key->num_keys - 1, NULL ); -#endif // OAES_DEBUG - - // AddRoundKey(state, w[Nr*Nb, (Nr+1)*Nb-1]) - for( _i = 0; _i < c_len; _i++ ) - c[_i] = c[_i] ^ _ctx->key->exp_data[ - ( _ctx->key->num_keys - 1 ) * OAES_RKEY_LEN * OAES_COL_LEN + _i ]; - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - { - _ctx->step_cb( _ctx->key->exp_data + - ( _ctx->key->num_keys - 1 ) * OAES_RKEY_LEN * OAES_COL_LEN, - "k_sch", _ctx->key->num_keys - 1, NULL ); - _ctx->step_cb( c, "output", _ctx->key->num_keys - 1, NULL ); - } -#endif // OAES_DEBUG - - return OAES_RET_SUCCESS; -} - -static OAES_RET oaes_decrypt_block( - OAES_CTX * ctx, uint8_t * c, size_t c_len ) -{ - size_t _i, _j; - oaes_ctx * _ctx = (oaes_ctx *) ctx; - - if( NULL == _ctx ) - return OAES_RET_ARG1; - - if( NULL == c ) - return OAES_RET_ARG2; - - if( c_len != OAES_BLOCK_SIZE ) - return OAES_RET_ARG3; - - if( NULL == _ctx->key ) - return OAES_RET_NOKEY; - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - _ctx->step_cb( c, "iinput", _ctx->key->num_keys - 1, NULL ); -#endif // OAES_DEBUG - - // AddRoundKey(state, w[Nr*Nb, (Nr+1)*Nb-1]) - for( _i = 0; _i < c_len; _i++ ) - c[_i] = c[_i] ^ _ctx->key->exp_data[ - ( _ctx->key->num_keys - 1 ) * OAES_RKEY_LEN * OAES_COL_LEN + _i ]; - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - { - _ctx->step_cb( _ctx->key->exp_data + - ( _ctx->key->num_keys - 1 ) * OAES_RKEY_LEN * OAES_COL_LEN, - "ik_sch", _ctx->key->num_keys - 1, NULL ); - _ctx->step_cb( c, "ik_add", _ctx->key->num_keys - 1, NULL ); - } -#endif // OAES_DEBUG - - for( _i = _ctx->key->num_keys - 2; _i > 0; _i-- ) - { - // InvShiftRows(state) - oaes_inv_shift_rows( c ); - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - _ctx->step_cb( c, "is_row", _i, NULL ); -#endif // OAES_DEBUG - - // InvSubBytes(state) - for( _j = 0; _j < c_len; _j++ ) - oaes_inv_sub_byte( c + _j ); - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - _ctx->step_cb( c, "is_box", _i, NULL ); -#endif // OAES_DEBUG - - // AddRoundKey(state, w[round*Nb, (round+1)*Nb-1]) - for( _j = 0; _j < c_len; _j++ ) - c[_j] = c[_j] ^ - _ctx->key->exp_data[_i * OAES_RKEY_LEN * OAES_COL_LEN + _j]; - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - { - _ctx->step_cb( _ctx->key->exp_data + _i * OAES_RKEY_LEN * OAES_COL_LEN, - "ik_sch", _i, NULL ); - _ctx->step_cb( c, "ik_add", _i, NULL ); - } -#endif // OAES_DEBUG - - // InvMixColums(state) - oaes_inv_mix_cols( c ); - oaes_inv_mix_cols( c + 4 ); - oaes_inv_mix_cols( c + 8 ); - oaes_inv_mix_cols( c + 12 ); - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - _ctx->step_cb( c, "im_col", _i, NULL ); -#endif // OAES_DEBUG - - } - - // InvShiftRows(state) - oaes_inv_shift_rows( c ); - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - _ctx->step_cb( c, "is_row", 1, NULL ); -#endif // OAES_DEBUG - - // InvSubBytes(state) - for( _i = 0; _i < c_len; _i++ ) - oaes_inv_sub_byte( c + _i ); - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - _ctx->step_cb( c, "is_box", 1, NULL ); -#endif // OAES_DEBUG - - // AddRoundKey(state, w[0, Nb-1]) - for( _i = 0; _i < c_len; _i++ ) - c[_i] = c[_i] ^ _ctx->key->exp_data[_i]; - -#ifdef OAES_DEBUG - if( _ctx->step_cb ) - { - _ctx->step_cb( _ctx->key->exp_data, "ik_sch", 1, NULL ); - _ctx->step_cb( c, "ioutput", 1, NULL ); - } -#endif // OAES_DEBUG - - return OAES_RET_SUCCESS; -} - -OAES_RET oaes_encrypt( OAES_CTX * ctx, - const uint8_t * m, size_t m_len, uint8_t * c, size_t * c_len ) -{ - size_t _i, _j, _c_len_in, _c_data_len; - size_t _pad_len = m_len % OAES_BLOCK_SIZE == 0 ? - 0 : OAES_BLOCK_SIZE - m_len % OAES_BLOCK_SIZE; - oaes_ctx * _ctx = (oaes_ctx *) ctx; - OAES_RET _rc = OAES_RET_SUCCESS; - uint8_t _flags = _pad_len ? OAES_FLAG_PAD : 0; - - if( NULL == _ctx ) - return OAES_RET_ARG1; - - if( NULL == m ) - return OAES_RET_ARG2; - - if( NULL == c_len ) - return OAES_RET_ARG5; - - _c_len_in = *c_len; - // data + pad - _c_data_len = m_len + _pad_len; - // header + iv + data + pad - *c_len = 2 * OAES_BLOCK_SIZE + m_len + _pad_len; - - if( NULL == c ) - return OAES_RET_SUCCESS; - - if( _c_len_in < *c_len ) - return OAES_RET_BUF; - - if( NULL == _ctx->key ) - return OAES_RET_NOKEY; - - // fill with random data first - for( _i = 0; _i < OAES_BLOCK_SIZE; _i++ ) - c[_i] = (uint8_t) OAES_RAND(_ctx->rctx); - // header - memcpy(c + 6, &_ctx->options, sizeof(_ctx->options)); - memcpy(c + 8, &_flags, sizeof(_flags)); - // iv - memcpy(c + OAES_BLOCK_SIZE, _ctx->iv, OAES_BLOCK_SIZE ); - // data - memcpy(c + 2 * OAES_BLOCK_SIZE, m, m_len ); - - for( _i = 0; _i < _c_data_len; _i += OAES_BLOCK_SIZE ) - { - uint8_t _block[OAES_BLOCK_SIZE]; - size_t _block_size = min( m_len - _i, OAES_BLOCK_SIZE ); - - memcpy( _block, c + 2 * OAES_BLOCK_SIZE + _i, _block_size ); - - // insert pad - for( _j = 0; _j < OAES_BLOCK_SIZE - _block_size; _j++ ) - _block[ _block_size + _j ] = _j + 1; - - // CBC - if( _ctx->options & OAES_OPTION_CBC ) - { - for( _j = 0; _j < OAES_BLOCK_SIZE; _j++ ) - _block[_j] = _block[_j] ^ _ctx->iv[_j]; - } - - _rc = _rc || - oaes_encrypt_block( ctx, _block, OAES_BLOCK_SIZE ); - memcpy( c + 2 * OAES_BLOCK_SIZE + _i, _block, OAES_BLOCK_SIZE ); - - if( _ctx->options & OAES_OPTION_CBC ) - memcpy( _ctx->iv, _block, OAES_BLOCK_SIZE ); - } - - return _rc; -} - -OAES_RET oaes_decrypt( OAES_CTX * ctx, - const uint8_t * c, size_t c_len, uint8_t * m, size_t * m_len ) -{ - size_t _i, _j, _m_len_in; - oaes_ctx * _ctx = (oaes_ctx *) ctx; - OAES_RET _rc = OAES_RET_SUCCESS; - uint8_t _iv[OAES_BLOCK_SIZE]; - uint8_t _flags; - OAES_OPTION _options; - - if( NULL == ctx ) - return OAES_RET_ARG1; - - if( NULL == c ) - return OAES_RET_ARG2; - - if( c_len % OAES_BLOCK_SIZE ) - return OAES_RET_ARG3; - - if( NULL == m_len ) - return OAES_RET_ARG5; - - _m_len_in = *m_len; - *m_len = c_len - 2 * OAES_BLOCK_SIZE; - - if( NULL == m ) - return OAES_RET_SUCCESS; - - if( _m_len_in < *m_len ) - return OAES_RET_BUF; - - if( NULL == _ctx->key ) - return OAES_RET_NOKEY; - - // options - memcpy(&_options, c + 6, sizeof(_options)); - // validate that all options are valid - if( _options & ~( - OAES_OPTION_ECB - | OAES_OPTION_CBC -#ifdef OAES_DEBUG - | OAES_OPTION_STEP_ON - | OAES_OPTION_STEP_OFF -#endif // OAES_DEBUG - ) ) - return OAES_RET_HEADER; - if( ( _options & OAES_OPTION_ECB ) && - ( _options & OAES_OPTION_CBC ) ) - return OAES_RET_HEADER; - if( _options == OAES_OPTION_NONE ) - return OAES_RET_HEADER; - - // flags - memcpy(&_flags, c + 8, sizeof(_flags)); - // validate that all flags are valid - if( _flags & ~( - OAES_FLAG_PAD - ) ) - return OAES_RET_HEADER; - - // iv - memcpy( _iv, c + OAES_BLOCK_SIZE, OAES_BLOCK_SIZE); - // data + pad - memcpy( m, c + 2 * OAES_BLOCK_SIZE, *m_len ); - - for( _i = 0; _i < *m_len; _i += OAES_BLOCK_SIZE ) - { - if( ( _options & OAES_OPTION_CBC ) && _i > 0 ) - memcpy( _iv, c + OAES_BLOCK_SIZE + _i, OAES_BLOCK_SIZE ); - - _rc = _rc || - oaes_decrypt_block( ctx, m + _i, min( *m_len - _i, OAES_BLOCK_SIZE ) ); - - // CBC - if( _options & OAES_OPTION_CBC ) - { - for( _j = 0; _j < OAES_BLOCK_SIZE; _j++ ) - m[ _i + _j ] = m[ _i + _j ] ^ _iv[_j]; - } - } - - // remove pad - if( _flags & OAES_FLAG_PAD ) - { - int _is_pad = 1; - size_t _temp = (size_t) m[*m_len - 1]; - - if( _temp <= 0x00 || _temp > 0x0f ) - return OAES_RET_HEADER; - for( _i = 0; _i < _temp; _i++ ) - if( m[*m_len - 1 - _i] != _temp - _i ) - _is_pad = 0; - if( _is_pad ) - { - memset( m + *m_len - _temp, 0, _temp ); - *m_len -= _temp; - } - else - return OAES_RET_HEADER; - } - - return OAES_RET_SUCCESS; -} |