Refactor WebCrypto code

content/child/webcrypto/openssl/sym_key_openssl.cc

+// Copyright 2014 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 "content/child/webcrypto/openssl/sym_key_openssl.h"
+
+#include <vector>
+#include <openssl/rand.h>
+
+#include "content/child/webcrypto/crypto_data.h"
+#include "content/child/webcrypto/openssl/key_openssl.h"
+#include "content/child/webcrypto/status.h"
+#include "crypto/openssl_util.h"
+#include "third_party/WebKit/public/platform/WebCryptoKeyAlgorithm.h"
+
+namespace content {
+
+namespace webcrypto {
+
+Status GenerateSecretKeyOpenSsl(const blink::WebCryptoKeyAlgorithm& algorithm,
+                                bool extractable,
+                                blink::WebCryptoKeyUsageMask usage_mask,
+                                unsigned keylen_bytes,
+                                blink::WebCryptoKey* key) {
+  crypto::OpenSSLErrStackTracer err_tracer(FROM_HERE);
+
+  std::vector<unsigned char> random_bytes(keylen_bytes, 0);
+
+  if (keylen_bytes > 0) {
+    if (!(RAND_bytes(&random_bytes[0], keylen_bytes)))
+      return Status::OperationError();
+  }
+
+  *key =
+      blink::WebCryptoKey::create(new SymKeyOpenSsl(CryptoData(random_bytes)),
+                                  blink::WebCryptoKeyTypeSecret,
+                                  extractable,
+                                  algorithm,
+                                  usage_mask);
+  return Status::Success();
+}
+
+Status ImportKeyRawOpenSsl(const CryptoData& key_data,
+                           const blink::WebCryptoKeyAlgorithm& algorithm,
+                           bool extractable,
+                           blink::WebCryptoKeyUsageMask usage_mask,
+                           blink::WebCryptoKey* key) {
+  *key = blink::WebCryptoKey::create(new SymKeyOpenSsl(key_data),
+                                     blink::WebCryptoKeyTypeSecret,
+                                     extractable,
+                                     algorithm,
+                                     usage_mask);
+  return Status::Success();
+}
+
+}  // namespace webcrypto
+
+}  // namespace content