From 76652ac3cad64dbc2fd54e976ce4bad0a37caa03 Mon Sep 17 00:00:00 2001
From: Jarred Sumner <jarred@jarredsumner.com>
Date: Sun, 23 Oct 2022 20:25:18 -0700
Subject: Add Web Crypto API (#1384)

* Add Web Crypto API

* Duplicate symbols

* Update c_cpp_properties.json

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>
---
 .../bindings/webcrypto/CryptoAlgorithmHKDF.cpp     | 86 ++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 src/bun.js/bindings/webcrypto/CryptoAlgorithmHKDF.cpp

(limited to 'src/bun.js/bindings/webcrypto/CryptoAlgorithmHKDF.cpp')

diff --git a/src/bun.js/bindings/webcrypto/CryptoAlgorithmHKDF.cpp b/src/bun.js/bindings/webcrypto/CryptoAlgorithmHKDF.cpp
new file mode 100644
index 000000000..5c7a2f4c5
--- /dev/null
+++ b/src/bun.js/bindings/webcrypto/CryptoAlgorithmHKDF.cpp
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2017 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "CryptoAlgorithmHKDF.h"
+
+#if ENABLE(WEB_CRYPTO)
+
+#include "CryptoAlgorithmHkdfParams.h"
+#include "CryptoKeyRaw.h"
+#include <JavaScriptCore/JSCJSValueInlines.h>
+#include <wtf/CrossThreadCopier.h>
+
+namespace WebCore {
+
+Ref<CryptoAlgorithm> CryptoAlgorithmHKDF::create()
+{
+    return adoptRef(*new CryptoAlgorithmHKDF);
+}
+
+CryptoAlgorithmIdentifier CryptoAlgorithmHKDF::identifier() const
+{
+    return s_identifier;
+}
+
+void CryptoAlgorithmHKDF::deriveBits(const CryptoAlgorithmParameters& parameters, Ref<CryptoKey>&& baseKey, size_t length, VectorCallback&& callback, ExceptionCallback&& exceptionCallback, ScriptExecutionContext& context, WorkQueue& workQueue)
+{
+    if (!length || length % 8) {
+        exceptionCallback(OperationError);
+        return;
+    }
+
+    dispatchOperationInWorkQueue(workQueue, context, WTFMove(callback), WTFMove(exceptionCallback),
+        [parameters = crossThreadCopy(downcast<CryptoAlgorithmHkdfParams>(parameters)), baseKey = WTFMove(baseKey), length] {
+            return platformDeriveBits(parameters, downcast<CryptoKeyRaw>(baseKey.get()), length);
+        });
+}
+
+void CryptoAlgorithmHKDF::importKey(CryptoKeyFormat format, KeyData&& data, const CryptoAlgorithmParameters& parameters, bool extractable, CryptoKeyUsageBitmap usages, KeyCallback&& callback, ExceptionCallback&& exceptionCallback)
+{
+    if (format != CryptoKeyFormat::Raw) {
+        exceptionCallback(NotSupportedError);
+        return;
+    }
+    if (usages & (CryptoKeyUsageEncrypt | CryptoKeyUsageDecrypt | CryptoKeyUsageSign | CryptoKeyUsageVerify | CryptoKeyUsageWrapKey | CryptoKeyUsageUnwrapKey)) {
+        exceptionCallback(SyntaxError);
+        return;
+    }
+    if (extractable) {
+        exceptionCallback(SyntaxError);
+        return;
+    }
+
+    callback(CryptoKeyRaw::create(parameters.identifier, WTFMove(std::get<Vector<uint8_t>>(data)), usages));
+}
+
+ExceptionOr<size_t> CryptoAlgorithmHKDF::getKeyLength(const CryptoAlgorithmParameters&)
+{
+    return 0;
+}
+    
+} // namespace WebCore
+
+#endif // ENABLE(WEB_CRYPTO)
-- 
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