1 files changed, 67 insertions, 0 deletions
diff --git a/chromium/third_party/WebKit/Source/platform/Crypto.cpp b/chromium/third_party/WebKit/Source/platform/Crypto.cpp
new file mode 100644
index 00000000000..0a7a7081a36
--- /dev/null
+++ b/chromium/third_party/WebKit/Source/platform/Crypto.cpp
@@ -0,0 +1,67 @@
+// 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 "config.h"
+#include "platform/Crypto.h"
+
+#include "public/platform/Platform.h"
+#include "public/platform/WebArrayBuffer.h"
+#include "public/platform/WebCrypto.h"
+#include "public/platform/WebCryptoAlgorithm.h"
+
+namespace WebCore {
+
+static blink::WebCryptoAlgorithmId toWebCryptoAlgorithmId(HashAlgorithm algorithm)
+{
+    switch (algorithm) {
+    case HashAlgorithmSha1:
+        return blink::WebCryptoAlgorithmIdSha1;
+    case HashAlgorithmSha256:
+        return blink::WebCryptoAlgorithmIdSha256;
+    case HashAlgorithmSha384:
+        return blink::WebCryptoAlgorithmIdSha384;
+    case HashAlgorithmSha512:
+        return blink::WebCryptoAlgorithmIdSha512;
+    };
+
+    ASSERT_NOT_REACHED();
+    return blink::WebCryptoAlgorithmIdSha256;
+}
+
+bool computeDigest(HashAlgorithm algorithm, const char* digestable, size_t length, DigestValue& digestResult)
+{
+    blink::WebCryptoAlgorithmId algorithmId = toWebCryptoAlgorithmId(algorithm);
+    blink::WebCrypto* crypto = blink::Platform::current()->crypto();
+    unsigned char* result;
+    unsigned resultSize;
+
+    ASSERT(crypto);
+
+    OwnPtr<blink::WebCryptoDigestor> digestor = adoptPtr(crypto->createDigestor(algorithmId));
+    if (!digestor.get() || !digestor->consume(reinterpret_cast<const unsigned char*>(digestable), length) || !digestor->finish(result, resultSize))
+        return false;
+
+    digestResult.append(static_cast<uint8_t*>(result), resultSize);
+    return true;
+}
+
+PassOwnPtr<blink::WebCryptoDigestor> createDigestor(HashAlgorithm algorithm)
+{
+    return adoptPtr(blink::Platform::current()->crypto()->createDigestor(toWebCryptoAlgorithmId(algorithm)));
+}
+
+void finishDigestor(blink::WebCryptoDigestor* digestor, DigestValue& digestResult)
+{
+    unsigned char* result = 0;
+    unsigned resultSize = 0;
+
+    if (!digestor->finish(result, resultSize))
+        return;
+
+    ASSERT(result);
+
+    digestResult.append(static_cast<uint8_t*>(result), resultSize);
+}
+
+} // namespace WebCore