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xtea: Factorize testing into a separate function

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Based on a patch by Michael Niedermayer.

Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö 2012-10-03 19:19:37 +03:00
parent fd712a5584
commit ca074cc313
1 changed files with 21 additions and 11 deletions
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32
libavutil/xtea.c
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@ -139,6 +139,25 @@ static const uint8_t xtea_test_ct[XTEA_NUM_TESTS][8] = {
{ 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41, 0x41 }
};
#undef exit
static void test_xtea(AVXTEA *ctx, uint8_t *dst, const uint8_t *src,
const uint8_t *ref, int len, uint8_t *iv, int dir,
const char *test)
{
av_xtea_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)
{
AVXTEA ctx;
@ -148,17 +167,8 @@ int main(void)
for (i = 0; i < XTEA_NUM_TESTS; i++) {
av_xtea_init(&ctx, xtea_test_key[i]);
av_xtea_crypt(&ctx, buf, xtea_test_pt[i], 1, NULL, 0);
if (memcmp(buf, xtea_test_ct[i], 8)) {
printf("Test encryption failed.\n");
return 1;
}
av_xtea_crypt(&ctx, buf, xtea_test_ct[i], 1, NULL, 1);
if (memcmp(buf, xtea_test_pt[i], 8)) {
printf("Test decryption failed.\n");
return 1;
}
test_xtea(&ctx, buf, xtea_test_pt[i], xtea_test_ct[i], 1, NULL, 0, "encryption");
test_xtea(&ctx, buf, xtea_test_ct[i], xtea_test_pt[i], 1, NULL, 1, "decryption");
}
printf("Test encryption/decryption success.\n");