Add a test for RSA PKCS #1 v1.5 signature verification.

src/platform/vboot_reference/tests/rsa_padding_test.c

+/* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "rsa_padding_test.h"
+
+#include <stdio.h>
+
+#include "file_keys.h"
+#include "rsa_utility.h"
+
+int main(int argc, char* argv[]) {
+  int i;
+  int error = 0;
+  RSAPublicKey* key;
+  if (argc != 2) {
+    fprintf(stderr, "Usage: %s <test public key>\n", argv[0]);
+    return 1;
+  }
+  key = RSAPublicKeyFromFile(argv[1]);
+  if (!key) {
+    fprintf(stderr, "Couldn't read RSA public key for the test.\n");
+    return 1;
+  }
+
+  /* The first test signature is valid. */
+  if (!RSA_verify(key, signatures[0], RSA1024NUMBYTES, 0,
+                  test_message_sha1_hash)) {
+    fprintf(stderr, "RSA Padding Test vector 0 FAILED!\n");
+    error = 255;  /* Test failure. */
+  }
+  /* All other signatures should fail verification. */
+  for (i = 1; i < sizeof(signatures) / sizeof(signatures[0]); i++) {
+    if (RSA_verify(key, signatures[i], RSA1024NUMBYTES, 0,
+                  test_message_sha1_hash)) {
+      fprintf(stderr, "RSA Padding Test vector %d FAILED!\n", i);
+      error = 255;  /* Test failure. */
+    }
+  }
+  if (!error)
+    fprintf(stderr, "RSA Padding Test PASSED for all test vectors.");
+
+  return error;
+}