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Diffstat (limited to 'libavutil/tests/tea.c')
| -rw-r--r-- | libavutil/tests/tea.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/libavutil/tests/tea.c b/libavutil/tests/tea.c new file mode 100644 index 0000000000..605bb524af --- /dev/null +++ b/libavutil/tests/tea.c @@ -0,0 +1,115 @@ +/* + * A 32-bit implementation of the TEA algorithm + * Copyright (c) 2015 Vesselin Bontchev + * + * Loosely based on the implementation of David Wheeler and Roger Needham, + * https://en.wikipedia.org/wiki/Tiny_Encryption_Algorithm#Reference_code + * + * This file is part of FFmpeg. + * + * FFmpeg 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. + * + * FFmpeg 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 FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdio.h> + +#include "libavutil/common.h" +#include "libavutil/tea.h" + +#define TEA_NUM_TESTS 4 + +// https://github.com/logandrews/TeaCrypt/blob/master/tea/tea_test.go +static const uint8_t tea_test_key[TEA_NUM_TESTS][16] = { + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + }, + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + }, + { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, + 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF + }, + { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, + 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF + } +}; + +static const uint8_t tea_test_pt[TEA_NUM_TESTS][8] = { + { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 }, + { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 }, + { 0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF } +}; + +static const uint8_t tea_test_ct[TEA_NUM_TESTS][8] = { + { 0x41, 0xEA, 0x3A, 0x0A, 0x94, 0xBA, 0xA9, 0x40 }, + { 0x6A, 0x2F, 0x9C, 0xF3, 0xFC, 0xCF, 0x3C, 0x55 }, + { 0xDE, 0xB1, 0xC0, 0xA2, 0x7E, 0x74, 0x5D, 0xB3 }, + { 0x12, 0x6C, 0x6B, 0x92, 0xC0, 0x65, 0x3A, 0x3E } +}; + +static void test_tea(struct AVTEA *ctx, uint8_t *dst, const uint8_t *src, + const uint8_t *ref, int len, uint8_t *iv, int dir, + const char *test) +{ + av_tea_crypt(ctx, dst, src, len, iv, dir); + if (memcmp(dst, ref, 8*len)) { + int i; + printf("%s failed\ngot ", test); + for (i = 0; i < 8*len; i++) + printf("%02x ", dst[i]); + printf("\nexpected "); + for (i = 0; i < 8*len; i++) + printf("%02x ", ref[i]); + printf("\n"); + exit(1); + } +} + +int main(void) +{ + struct AVTEA *ctx; + uint8_t buf[8], iv[8]; + int i; + static const uint8_t src[32] = "HelloWorldHelloWorldHelloWorld"; + uint8_t ct[32]; + uint8_t pl[32]; + + ctx = av_tea_alloc(); + if (!ctx) + return 1; + + for (i = 0; i < TEA_NUM_TESTS; i++) { + av_tea_init(ctx, tea_test_key[i], 64); + + test_tea(ctx, buf, tea_test_pt[i], tea_test_ct[i], 1, NULL, 0, "encryption"); + test_tea(ctx, buf, tea_test_ct[i], tea_test_pt[i], 1, NULL, 1, "decryption"); + + /* encrypt */ + memcpy(iv, "HALLO123", 8); + av_tea_crypt(ctx, ct, src, 4, iv, 0); + + /* decrypt into pl */ + memcpy(iv, "HALLO123", 8); + test_tea(ctx, pl, ct, src, 4, iv, 1, "CBC decryption"); + + memcpy(iv, "HALLO123", 8); + test_tea(ctx, ct, ct, src, 4, iv, 1, "CBC inplace decryption"); + } + + printf("Test encryption/decryption success.\n"); + av_free(ctx); + + return 0; +} |