Add SM3-HKDF tests

tests/sm3_hkdftest.c

@@ -0,0 +1,92 @@
+/*
+ *  Copyright 2014-2026 The GmSSL Project. All Rights Reserved.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the License); you may
+ *  not use this file except in compliance with the License.
+ *
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ */
+
+
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+#include <gmssl/hex.h>
+#include <gmssl/hkdf.h>
+#include <gmssl/error.h>
+#include "sm3_hkdftest.h"
+
+static int test_sm3_hkdf_wycheproof(void)
+{
+	size_t i;
+
+	for (i = 0; i < sizeof(test_sm3_hkdf_vectors)/sizeof(test_sm3_hkdf_vectors[0]); i++) {
+		const TEST_SM3_HKDF_VECTOR *tv = &test_sm3_hkdf_vectors[i];
+		uint8_t ikm[80];
+		uint8_t salt[80];
+		uint8_t info[80];
+		uint8_t prk[32];
+		uint8_t okm[32 * 255]; // = 8160
+		uint8_t expected[32 * 255]; // = 8160
+		size_t ikmlen, saltlen, infolen, expected_len;
+		int ret;
+
+		if (strlen(tv->ikm)/2 > sizeof(ikm)
+			|| strlen(tv->salt)/2 > sizeof(salt)
+			|| strlen(tv->info)/2 > sizeof(info)
+			|| strlen(tv->okm)/2 > sizeof(expected)) {
+			error_print();
+			return -1;
+		}
+		if (hex_to_bytes(tv->ikm, strlen(tv->ikm), ikm, &ikmlen) != 1
+			|| hex_to_bytes(tv->salt, strlen(tv->salt), salt, &saltlen) != 1
+			|| hex_to_bytes(tv->info, strlen(tv->info), info, &infolen) != 1
+			|| hex_to_bytes(tv->okm, strlen(tv->okm), expected, &expected_len) != 1) {
+			error_print();
+			return -1;
+		}
+		if (tv->result == TEST_RESULT_VALID) {
+			if (expected_len != tv->size) {
+				error_print();
+				return -1;
+			}
+		}
+
+		if (sm3_hkdf_extract(salt, saltlen, ikm, ikmlen, prk) != 1) {
+			error_print();
+			return -1;
+		}
+		ret = sm3_hkdf_expand(prk, info, infolen, tv->size, okm);
+
+		if (tv->result == TEST_RESULT_VALID) {
+			if (ret != 1 || memcmp(okm, expected, expected_len) != 0) {
+				error_print();
+				return -1;
+			}
+		} else if (tv->result == TEST_RESULT_INVALID) {
+			if (ret == 1) {
+				error_print();
+				return -1;
+			}
+			fprintf(stderr, "tcId %d expected HKDF-SM3 failure for %s\n", tv->tc_id, tv->flags);
+		} else {
+			if (ret != 1 && ret != -1) {
+				error_print();
+				return -1;
+			}
+		}
+	}
+
+	printf("%s() ok\n", __FUNCTION__);
+	return 1;
+}
+
+int main(void)
+{
+	if (test_sm3_hkdf_wycheproof() != 1) goto err;
+	printf("%s all tests passed\n", __FILE__);
+	return 0;
+err:
+	error_print();
+	return 1;
+}