/**
Performs a self-test of the LTC_CAST5 block cipher
@return CRYPT_OK if functional, CRYPT_NOP if self-test has been disabled
*/
int cast5_test(void)
{
#ifndef LTC_TEST
return CRYPT_NOP;
#else
static const struct {
int keylen;
unsigned char key[16];
unsigned char pt[8];
unsigned char ct[8];
} tests[] = {
{ 16,
{0x01, 0x23, 0x45, 0x67, 0x12, 0x34, 0x56, 0x78, 0x23, 0x45, 0x67, 0x89, 0x34, 0x56, 0x78, 0x9A},
{0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF},
{0x23, 0x8B, 0x4F, 0xE5, 0x84, 0x7E, 0x44, 0xB2}
},
{ 10,
{0x01, 0x23, 0x45, 0x67, 0x12, 0x34, 0x56, 0x78, 0x23, 0x45, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF},
{0xEB, 0x6A, 0x71, 0x1A, 0x2C, 0x02, 0x27, 0x1B},
},
{ 5,
{0x01, 0x23, 0x45, 0x67, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF},
{0x7A, 0xC8, 0x16, 0xD1, 0x6E, 0x9B, 0x30, 0x2E}
}
};
int i, y, err;
symmetric_key key;
unsigned char tmp[2][8];
for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) {
if ((err = cast5_setup(tests[i].key, tests[i].keylen, 0, &key)) != CRYPT_OK) {
return err;
}
cast5_ecb_encrypt(tests[i].pt, tmp[0], &key);
cast5_ecb_decrypt(tmp[0], tmp[1], &key);
if ((compare_testvector(tmp[0], 8, tests[i].ct, 8, "CAST5 Encrypt", i) != 0) ||
(compare_testvector(tmp[1], 8, tests[i].pt, 8, "CAST5 Decrypt", i) != 0)) {
return CRYPT_FAIL_TESTVECTOR;
}
/* now see if we can encrypt all zero bytes 1000 times, decrypt and come back where we started */
for (y = 0; y < 8; y++) tmp[0][y] = 0;
for (y = 0; y < 1000; y++) cast5_ecb_encrypt(tmp[0], tmp[0], &key);
for (y = 0; y < 1000; y++) cast5_ecb_decrypt(tmp[0], tmp[0], &key);
for (y = 0; y < 8; y++) if (tmp[0][y] != 0) return CRYPT_FAIL_TESTVECTOR;
}
return CRYPT_OK;
#endif
}
int cast5_test(void)
{
#ifndef LTC_TEST
return CRYPT_NOP;
#else
static const struct {
int keylen;
unsigned char key[16];
unsigned char pt[8];
unsigned char ct[8];
} tests[] = {
{ 16,
{0x01, 0x23, 0x45, 0x67, 0x12, 0x34, 0x56, 0x78, 0x23, 0x45, 0x67, 0x89, 0x34, 0x56, 0x78, 0x9A},
{0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF},
{0x23, 0x8B, 0x4F, 0xE5, 0x84, 0x7E, 0x44, 0xB2}
},
{ 10,
{0x01, 0x23, 0x45, 0x67, 0x12, 0x34, 0x56, 0x78, 0x23, 0x45, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF},
{0xEB, 0x6A, 0x71, 0x1A, 0x2C, 0x02, 0x27, 0x1B},
},
{ 5,
{0x01, 0x23, 0x45, 0x67, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
{0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF},
{0x7A, 0xC8, 0x16, 0xD1, 0x6E, 0x9B, 0x30, 0x2E}
}
};
int i, err;
symmetric_key key;
unsigned char buf[8], buf2[8];
for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) {
if ((err = cast5_setup(tests[i].key, tests[i].keylen, 0, &key)) != CRYPT_OK) {
return err;
}
cast5_ecb_encrypt(tests[i].pt, buf, &key);
cast5_ecb_decrypt(buf, buf2, &key);
if ((memcmp(buf, tests[i].ct, 8) != 0) || (memcmp(buf2, tests[i].pt, 8) != 0)) {
return CRYPT_FAIL_TESTVECTOR;
}
}
return CRYPT_OK;
#endif
}
