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Diffstat (limited to 'libavutil/des-test.c')
| -rw-r--r-- | libavutil/des-test.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/libavutil/des-test.c b/libavutil/des-test.c new file mode 100644 index 0000000000..a372035a54 --- /dev/null +++ b/libavutil/des-test.c @@ -0,0 +1,128 @@ +/* + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * Libav is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "des.c" + +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "time.h" + +static uint64_t rand64(void) +{ + uint64_t r = rand(); + r = (r << 32) | rand(); + return r; +} + +static const uint8_t test_key[] = { 0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xf0 }; +static const DECLARE_ALIGNED(8, uint8_t, plain)[] = { 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10 }; +static const DECLARE_ALIGNED(8, uint8_t, crypt)[] = { 0x4a, 0xb6, 0x5b, 0x3d, 0x4b, 0x06, 0x15, 0x18 }; +static DECLARE_ALIGNED(8, uint8_t, tmp)[8]; +static DECLARE_ALIGNED(8, uint8_t, large_buffer)[10002][8]; +static const uint8_t cbc_key[] = { + 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, + 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0x01, + 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0x01, 0x23 +}; + +static int run_test(int cbc, int decrypt) +{ + AVDES d; + int delay = cbc && !decrypt ? 2 : 1; + uint64_t res; + AV_WB64(large_buffer[0], 0x4e6f772069732074ULL); + AV_WB64(large_buffer[1], 0x1234567890abcdefULL); + AV_WB64(tmp, 0x1234567890abcdefULL); + av_des_init(&d, cbc_key, 192, decrypt); + av_des_crypt(&d, large_buffer[delay], large_buffer[0], 10000, cbc ? tmp : NULL, decrypt); + res = AV_RB64(large_buffer[9999 + delay]); + if (cbc) { + if (decrypt) + return res == 0xc5cecf63ecec514cULL; + else + return res == 0xcb191f85d1ed8439ULL; + } else { + if (decrypt) + return res == 0x8325397644091a0aULL; + else + return res == 0xdd17e8b8b437d232ULL; + } +} + +int main(void) +{ + AVDES d; + int i; + uint64_t key[3]; + uint64_t data; + uint64_t ct; + uint64_t roundkeys[16]; + srand(av_gettime()); + key[0] = AV_RB64(test_key); + data = AV_RB64(plain); + gen_roundkeys(roundkeys, key[0]); + if (des_encdec(data, roundkeys, 0) != AV_RB64(crypt)) { + printf("Test 1 failed\n"); + return 1; + } + av_des_init(&d, test_key, 64, 0); + av_des_crypt(&d, tmp, plain, 1, NULL, 0); + if (memcmp(tmp, crypt, sizeof(crypt))) { + printf("Public API decryption failed\n"); + return 1; + } + if (!run_test(0, 0) || !run_test(0, 1) || !run_test(1, 0) || !run_test(1, 1)) { + printf("Partial Monte-Carlo test failed\n"); + return 1; + } + for (i = 0; i < 1000; i++) { + key[0] = rand64(); + key[1] = rand64(); + key[2] = rand64(); + data = rand64(); + av_des_init(&d, key, 192, 0); + av_des_crypt(&d, &ct, &data, 1, NULL, 0); + av_des_init(&d, key, 192, 1); + av_des_crypt(&d, &ct, &ct, 1, NULL, 1); + if (ct != data) { + printf("Test 2 failed\n"); + return 1; + } + } +#ifdef GENTABLES + printf("static const uint32_t S_boxes_P_shuffle[8][64] = {\n"); + for (i = 0; i < 8; i++) { + int j; + printf(" {"); + for (j = 0; j < 64; j++) { + uint32_t v = S_boxes[i][j >> 1]; + v = j & 1 ? v >> 4 : v & 0xf; + v <<= 28 - 4 * i; + v = shuffle(v, P_shuffle, sizeof(P_shuffle)); + printf((j & 7) == 0 ? "\n " : " "); + printf("0x%08X,", v); + } + printf("\n },\n"); + } + printf("};\n"); +#endif + return 0; +} |