Add fuzzers for import of WebCrypto DER-encoded keys.

 * RSA PKCS8-formatted
 * RSA SPKI-formatted
 * EC PKCS8-formatted
 * EC SPK-formatted

There is potentially some overlap with the existing fuzzer "boringssl_d2i_autoprivatekey_fuzzer", which should exercise most of the codepaths for the the PKCS8 formatted imports.

Review URL: https://codereview.chromium.org/1743763003

Cr-Commit-Position: refs/heads/master@{#378193}

1 files changed, 15 insertions, 0 deletions

diff --git a/components/webcrypto/ec_import_key_spki_fuzzer.cc b/components/webcrypto/ec_import_key_spki_fuzzer.cc
new file mode 100644
index 0000000..7f16cfc
--- /dev/null
+++ b/components/webcrypto/ec_import_key_spki_fuzzer.cc
@@ -0,0 +1,15 @@
+// Copyright 2016 The Chromium 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 <stddef.h>
+#include <stdint.h>
+
+#include "components/webcrypto/fuzzer_support.h"
+
+// Entry point for LibFuzzer.
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+  webcrypto::ImportEcKeyFromDerFuzzData(data, size,
+                                        blink::WebCryptoKeyFormatSpki);
+  return 0;
+}