Add test case for SM2 evp verification

This test case is originally submitted in #6757, by Jack Lloyd. The test
case has been modified to use the a different method to set the ID when
computing the Z hash of SM2 signature.

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Paul Yang <yang.yang@baishancloud.com>
(Merged from https://github.com/openssl/openssl/pull/7113)

diff --git a/test/evp_extra_test.c b/test/evp_extra_test.c
index 2fb3914ee8371d2f8653b2b22495c05b747eddfa..f0b0040eae5965f22706576c3e38426aaf750cc9 100644 (file)
--- a/test/evp_extra_test.c
+++ b/test/evp_extra_test.c
@@ -524,6 +524,84 @@ static int test_EVP_PKCS82PKEY(void)
 
 #ifndef OPENSSL_NO_SM2
 
+static int test_EVP_SM2_verify(void)
+{
+    /* From https://tools.ietf.org/html/draft-shen-sm2-ecdsa-02#appendix-A */
+    const char *pubkey =
+       "-----BEGIN PUBLIC KEY-----\n"
+       "MIIBMzCB7AYHKoZIzj0CATCB4AIBATAsBgcqhkjOPQEBAiEAhULWnkwETxjouSQ1\n"
+       "v2/33kVyg5FcRVF9ci7biwjx38MwRAQgeHlotPoyw/0kF4Quc7v+/y88hItoMdfg\n"
+       "7GUiizk35JgEIGPkxtOyOwyEnPhCQUhL/kj2HVmlsWugbm4S0donxSSaBEEEQh3r\n"
+       "1hti6rZ0ZDTrw8wxXjIiCzut1QvcTE5sFH/t1D0GgFEry7QsB9RzSdIVO3DE5df9\n"
+       "/L+jbqGoWEG55G4JogIhAIVC1p5MBE8Y6LkkNb9v990pdyBjBIVijVrnTufDLnm3\n"
+       "AgEBA0IABArkx3mKoPEZRxvuEYJb5GICu3nipYRElel8BP9N8lSKfAJA+I8c1OFj\n"
+       "Uqc8F7fxbwc1PlOhdtaEqf4Ma7eY6Fc=\n"
+       "-----END PUBLIC KEY-----\n";
+
+    const char *msg = "message digest";
+    const char *id = "ALICE123@YAHOO.COM";
+
+    const uint8_t signature[] = {
+       0x30, 0x44, 0x02, 0x20,
+
+       0x40, 0xF1, 0xEC, 0x59, 0xF7, 0x93, 0xD9, 0xF4, 0x9E, 0x09, 0xDC,
+       0xEF, 0x49, 0x13, 0x0D, 0x41, 0x94, 0xF7, 0x9F, 0xB1, 0xEE, 0xD2,
+       0xCA, 0xA5, 0x5B, 0xAC, 0xDB, 0x49, 0xC4, 0xE7, 0x55, 0xD1,
+
+       0x02, 0x20,
+
+       0x6F, 0xC6, 0xDA, 0xC3, 0x2C, 0x5D, 0x5C, 0xF1, 0x0C, 0x77, 0xDF,
+       0xB2, 0x0F, 0x7C, 0x2E, 0xB6, 0x67, 0xA4, 0x57, 0x87, 0x2F, 0xB0,
+       0x9E, 0xC5, 0x63, 0x27, 0xA6, 0x7E, 0xC7, 0xDE, 0xEB, 0xE7
+    };
+
+    int rc = 0;
+    BIO *bio = NULL;
+    EVP_PKEY *pkey = NULL;
+    EVP_MD_CTX *mctx = NULL;
+    EVP_PKEY_CTX *pctx = NULL;
+
+    bio = BIO_new_mem_buf(pubkey, strlen(pubkey));
+    if (!TEST_true(bio != NULL))
+        goto done;
+
+    pkey = PEM_read_bio_PUBKEY(bio, NULL, NULL, NULL);
+    if (!TEST_true(pkey != NULL))
+        goto done;
+
+    if (!TEST_true(EVP_PKEY_set_alias_type(pkey, EVP_PKEY_SM2)))
+        goto done;
+
+    if (!TEST_ptr(mctx = EVP_MD_CTX_new()))
+        goto done;
+
+    if (!TEST_ptr(pctx = EVP_PKEY_CTX_new(pkey, NULL)))
+        goto done;
+
+    if (!TEST_int_gt(EVP_PKEY_CTX_set1_id(pctx, (const uint8_t *)id,
+                                          strlen(id)), 0))
+        goto done;
+
+    EVP_MD_CTX_set_pkey_ctx(mctx, pctx);
+
+    if (!TEST_true(EVP_DigestVerifyInit(mctx, NULL, EVP_sm3(), NULL, pkey)))
+        goto done;
+
+    if (!TEST_true(EVP_DigestVerifyUpdate(mctx, msg, strlen(msg))))
+        goto done;
+
+    if (!TEST_true(EVP_DigestVerifyFinal(mctx, signature, sizeof(signature))))
+        goto done;
+    rc = 1;
+
+ done:
+    BIO_free(bio);
+    EVP_PKEY_free(pkey);
+    EVP_PKEY_CTX_free(pctx);
+    EVP_MD_CTX_free(mctx);
+    return rc;
+}
+
 static int test_EVP_SM2(void)
 {
     int ret = 0;
@@ -846,6 +924,7 @@ int setup_tests(void)
 #endif
 #ifndef OPENSSL_NO_SM2
     ADD_TEST(test_EVP_SM2);
+    ADD_TEST(test_EVP_SM2_verify);
 #endif
     ADD_ALL_TESTS(test_set_get_raw_keys, OSSL_NELEM(keys));
     custom_pmeth = EVP_PKEY_meth_new(0xdefaced, 0);