Add more SM4 test vectors

SM4 pass openssl and other known test vectors. SM4-GCM and SM4-XTS only support the GB/T GF(2^128) encoding standard.

tests/sm4_cfbtest.c

@@ -59,6 +59,113 @@ static int test_sm4_cfb(void)
 	return 1;
 }
 
+// FIXME: no test vectors for SM4_CFB_8, SM4_CFB_64
+static int test_sm4_cfb_test_vectors(void)
+{
+	struct {
+		char *label;
+		char *key;
+		size_t sbytes;
+		char *iv;
+		char *plaintext;
+		char *ciphertext;
+	} tests[] = {
+		{
+		"openssl",
+		"0123456789abcdeffedcba9876543210",
+		SM4_CFB_128,
+		"0123456789abcdeffedcba9876543210",
+		"0123456789abcdeffedcba98765432100123456789abcdeffedcba9876543210",
+		"693d9a535bad5bb1786f53d7253a70569ed258a85a0467cc92aab393dd978995",
+		},
+		{
+		"draft-ribose-cfrg-sm4-10 example-1",
+		"0123456789abcdeffedcba9876543210",
+		SM4_CFB_128,
+		"000102030405060708090a0b0c0d0e0f",
+		"aaaaaaaabbbbbbbbccccccccddddddddeeeeeeeeffffffffaaaaaaaabbbbbbbb",
+		"ac3236cb861dd316e6413b4e3c7524b769d4c54ed433b9a0346009beb37b2b3f",
+		},
+		{
+		"draft-ribose-cfrg-sm4-10 example-2",
+		"fedcba98765432100123456789abcdef",
+		SM4_CFB_128,
+		"000102030405060708090a0b0c0d0e0f",
+		"aaaaaaaabbbbbbbbccccccccddddddddeeeeeeeeffffffffaaaaaaaabbbbbbbb",
+		"5dcccd25a84ba16560d7f265887068490d9b86ff20c3bfe115ffa02ca6192cc5"
+		},
+	};
+
+	uint8_t key[16];
+	size_t key_len;
+	uint8_t iv[16];
+	size_t iv_len;
+	uint8_t *plaintext;
+	size_t plaintext_len;
+	uint8_t *ciphertext;
+	size_t ciphertext_len;
+
+	SM4_KEY sm4_key;
+	uint8_t *encrypted;
+	size_t encrypted_len;
+	uint8_t *decrypted;
+	size_t decrypted_len;
+	size_t i;
+
+	for (i = 0; i < sizeof(tests)/sizeof(tests[0]); i++) {
+
+
+		if ((plaintext = (uint8_t *)malloc(strlen(tests[i].plaintext)/2)) == NULL) {
+			error_print();
+			return -1;
+		}
+		if ((ciphertext = (uint8_t *)malloc(strlen(tests[i].ciphertext)/2)) == NULL) {
+			error_print();
+			return -1;
+		}
+
+		hex_to_bytes(tests[i].key, strlen(tests[i].key), key, &key_len);
+		hex_to_bytes(tests[i].iv, strlen(tests[i].iv), iv, &iv_len);
+		hex_to_bytes(tests[i].plaintext, strlen(tests[i].plaintext), plaintext, &plaintext_len);
+		hex_to_bytes(tests[i].ciphertext, strlen(tests[i].ciphertext), ciphertext, &ciphertext_len);
+
+		if ((encrypted = (uint8_t *)malloc(ciphertext_len)) == NULL) {
+			error_print();
+			return -1;
+		}
+
+		sm4_set_encrypt_key(&sm4_key, key);
+		sm4_cfb_encrypt(&sm4_key, tests[i].sbytes, iv, plaintext, plaintext_len, encrypted);
+
+		if (memcmp(encrypted, ciphertext, ciphertext_len) != 0) {
+			error_print();
+			return -1;
+		}
+
+		if ((decrypted = (uint8_t *)malloc(plaintext_len)) == NULL) {
+			error_print();
+			return -1;
+		}
+
+		//sm4_set_encrypt_key(&sm4_key, key);
+		hex_to_bytes(tests[i].iv, strlen(tests[i].iv), iv, &iv_len);
+		sm4_cfb_decrypt(&sm4_key, tests[i].sbytes, iv, ciphertext, ciphertext_len, decrypted);
+
+		if (memcmp(decrypted, plaintext, plaintext_len) != 0) {
+			error_print();
+			return -1;
+		}
+
+		free(plaintext);
+		free(ciphertext);
+		free(encrypted);
+		free(decrypted);
+	}
+
+	printf("%s() ok\n", __FUNCTION__);
+	return 1;
+}
+
 static int test_sm4_cfb_ctx(void)
 {
 
@@ -158,6 +265,7 @@ static int test_sm4_cfb_ctx(void)
 int main(void)
 {
 	if (test_sm4_cfb() != 1) goto err;
+	if (test_sm4_cfb_test_vectors() != 1) goto err;
 	if (test_sm4_cfb_ctx() != 1) goto err;
 	printf("%s all tests passed\n", __FILE__);
 	return 0;