Add testcase for Ethereum signatures.

Signed-off-by: Steffen Jaeckel <s@jaeckel.eu>

tests/ecc_test.c

@@ -1515,6 +1515,35 @@ static int s_ecc_import_export(void) {
    return CRYPT_OK;
 }
 
+static int s_ecc_test_ethereum(void)
+{
+#ifdef LTC_ECC_SECP256K1
+   int stat;
+   const ltc_ecc_curve* dp;
+   ecc_key key;
+   unsigned char buf[1000];
+   unsigned long len;
+   unsigned char data16[16] = { 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1, 0xd1 };
+
+   DO(ecc_find_curve("SECP256K1", &dp));
+
+   DO(ecc_make_key_ex(&yarrow_prng, find_prng ("yarrow"), &key, dp));
+
+   /* test Ethereum signature */
+   len = sizeof(buf);
+   DO(ecc_sign_hash_eth27(data16, 16, buf, &len, &yarrow_prng, find_prng ("yarrow"), &key));
+   stat = 0;
+   DO(ecc_verify_hash_eth27(buf, len, data16, 16, &stat, &key));
+   if (stat != 1) return CRYPT_FAIL_TESTVECTOR;
+
+   /* cleanup */
+   ecc_free(&key);
+   return CRYPT_OK;
+#else
+   return CRYPT_NOP;
+#endif
+}
+
 #ifdef LTC_ECC_SHAMIR
 static int s_ecc_test_recovery(void)
 {
@@ -1633,6 +1662,7 @@ int ecc_test(void)
    DO(s_ecc_test_shamir());
    DO(s_ecc_test_recovery());
 #endif
+   DO(s_ecc_test_ethereum());
    return CRYPT_OK;
 }