Source/WebCore/bindings/js/JSSubtleCryptoCustom.cpp - WebKit - Git at Google

 /*
  * Copyright (C) 2016 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 "JSSubtleCrypto.h"

 #if ENABLE(SUBTLE_CRYPTO)

 #include "CryptoAlgorithm.h"
 #include "CryptoAlgorithmRegistry.h"
 #include "JSAesKeyGenParams.h"
 #include "JSCryptoAlgorithmParameters.h"
 #include "JSCryptoKey.h"
 #include "JSCryptoKeyPair.h"
 #include "JSDOMPromise.h"
 #include "JSHmacKeyGenParams.h"
 #include "JSRsaHashedKeyGenParams.h"
 #include "JSRsaKeyGenParams.h"
 #include "ScriptState.h"
 #include <runtime/Error.h>
 #include <runtime/IteratorOperations.h>

 using namespace JSC;

 namespace WebCore {

 enum class Operations {
     GenerateKey,
     Digest,
 };

 static std::unique_ptr<CryptoAlgorithmParameters> normalizeCryptoAlgorithmParameters(ExecState&, JSValue, Operations);

 static CryptoAlgorithmIdentifier toHashIdentifier(ExecState& state, JSValue value)
 {
     VM& vm = state.vm();
     auto scope = DECLARE_THROW_SCOPE(vm);

     auto digestParams = normalizeCryptoAlgorithmParameters(state, value, Operations::Digest);
     RETURN_IF_EXCEPTION(scope, { });
     return digestParams->identifier;
 }

 static std::unique_ptr<CryptoAlgorithmParameters> normalizeCryptoAlgorithmParameters(ExecState& state, JSValue value, Operations operation)
 {
     VM& vm = state.vm();
     auto scope = DECLARE_THROW_SCOPE(vm);

     if (value.isString()) {
         JSObject* newParams = constructEmptyObject(&state);
         newParams->putDirect(vm, Identifier::fromString(&vm, "name"), value);
         return normalizeCryptoAlgorithmParameters(state, newParams, operation);
     }

     if (value.isObject()) {
         auto params = convertDictionary<CryptoAlgorithmParameters>(state, value);
         RETURN_IF_EXCEPTION(scope, nullptr);

         CryptoAlgorithmIdentifier identifier;
         if (!CryptoAlgorithmRegistry::singleton().getIdentifierForName(params.name, identifier)) {
             setDOMException(&state, NOT_SUPPORTED_ERR);
             return nullptr;
         }

         std::unique_ptr<CryptoAlgorithmParameters> result;
         switch (operation) {
         case Operations::GenerateKey:
             switch (identifier) {
             case CryptoAlgorithmIdentifier::RSAES_PKCS1_v1_5: {
                 auto params = convertDictionary<CryptoAlgorithmRsaKeyGenParams>(state, value);
                 RETURN_IF_EXCEPTION(scope, nullptr);
                 result = std::make_unique<CryptoAlgorithmRsaKeyGenParams>(params);
                 break;
             }
             case CryptoAlgorithmIdentifier::RSASSA_PKCS1_v1_5:
             case CryptoAlgorithmIdentifier::RSA_PSS:
             case CryptoAlgorithmIdentifier::RSA_OAEP: {
                 auto params = convertDictionary<CryptoAlgorithmRsaHashedKeyGenParams>(state, value);
                 RETURN_IF_EXCEPTION(scope, nullptr);
                 params.hashIdentifier = toHashIdentifier(state, params.hash);
                 RETURN_IF_EXCEPTION(scope, nullptr);
                 result = std::make_unique<CryptoAlgorithmRsaHashedKeyGenParams>(params);
                 break;
             }
             case CryptoAlgorithmIdentifier::AES_CTR:
             case CryptoAlgorithmIdentifier::AES_CBC:
             case CryptoAlgorithmIdentifier::AES_CMAC:
             case CryptoAlgorithmIdentifier::AES_GCM:
             case CryptoAlgorithmIdentifier::AES_CFB:
             case CryptoAlgorithmIdentifier::AES_KW: {
                 auto params = convertDictionary<CryptoAlgorithmAesKeyGenParams>(state, value);
                 RETURN_IF_EXCEPTION(scope, nullptr);
                 result = std::make_unique<CryptoAlgorithmAesKeyGenParams>(params);
                 break;
             }
             case CryptoAlgorithmIdentifier::HMAC: {
                 auto params = convertDictionary<CryptoAlgorithmHmacKeyGenParams>(state, value);
                 RETURN_IF_EXCEPTION(scope, nullptr);
                 params.hashIdentifier = toHashIdentifier(state, params.hash);
                 RETURN_IF_EXCEPTION(scope, nullptr);
                 result = std::make_unique<CryptoAlgorithmHmacKeyGenParams>(params);
                 break;
             }
             default:
                 setDOMException(&state, NOT_SUPPORTED_ERR);
                 return nullptr;
             }
             break;
         case Operations::Digest:
             switch (identifier) {
             case CryptoAlgorithmIdentifier::SHA_1:
             case CryptoAlgorithmIdentifier::SHA_224:
             case CryptoAlgorithmIdentifier::SHA_256:
             case CryptoAlgorithmIdentifier::SHA_384:
             case CryptoAlgorithmIdentifier::SHA_512:
                 result = std::make_unique<CryptoAlgorithmParameters>(params);
                 break;
             default:
                 setDOMException(&state, NOT_SUPPORTED_ERR);
                 return nullptr;
             }
             break;
         default:
             ASSERT_NOT_REACHED();
             return nullptr;
         }

         result->identifier = identifier;
         return result;
     }

     throwTypeError(&state, scope, ASCIILiteral("Invalid AlgorithmIdentifier"));
     return nullptr;
 }

 static CryptoKeyUsage cryptoKeyUsagesFromJSValue(ExecState& state, JSValue iterable)
 {
     VM& vm = state.vm();
     auto scope = DECLARE_THROW_SCOPE(vm);

     CryptoKeyUsage result = 0;
     forEachInIterable(&state, iterable, [&result](VM& vm, ExecState* state, JSValue nextItem) {
         auto scope = DECLARE_THROW_SCOPE(vm);

         String usageString = nextItem.toWTFString(state);
         RETURN_IF_EXCEPTION(scope, void());
         if (usageString == "encrypt")
             result |= CryptoKeyUsageEncrypt;
         else if (usageString == "decrypt")
             result |= CryptoKeyUsageDecrypt;
         else if (usageString == "sign")
             result |= CryptoKeyUsageSign;
         else if (usageString == "verify")
             result |= CryptoKeyUsageVerify;
         else if (usageString == "deriveKey")
             result |= CryptoKeyUsageDeriveKey;
         else if (usageString == "deriveBits")
             result |= CryptoKeyUsageDeriveBits;
         else if (usageString == "wrapKey")
             result |= CryptoKeyUsageWrapKey;
         else if (usageString == "unwrapKey")
             result |= CryptoKeyUsageUnwrapKey;
         else
             throwTypeError(state, scope, ASCIILiteral("Invalid KeyUsages"));
     });
     RETURN_IF_EXCEPTION(scope, 0);
     return result;
 }

 static RefPtr<CryptoAlgorithm> createAlgorithm(ExecState& state, CryptoAlgorithmIdentifier identifier)
 {
     auto result = CryptoAlgorithmRegistry::singleton().create(identifier);
     if (!result)
         setDOMException(&state, NOT_SUPPORTED_ERR);
     return result;
 }

 // Maybe we want more specific error messages?
 static void rejectWithException(Ref<DeferredPromise>&& passedPromise, ExceptionCode ec)
 {
     switch (ec) {
     case NOT_SUPPORTED_ERR:
         passedPromise->reject(ec, ASCIILiteral("The algorithm is not supported"));
         return;
     case SYNTAX_ERR:
         passedPromise->reject(ec, ASCIILiteral("A required parameter was missing or out-of-range"));
         return;
     case INVALID_STATE_ERR:
         passedPromise->reject(ec, ASCIILiteral("The requested operation is not valid for the current state of the provided key"));
         return;
     case INVALID_ACCESS_ERR:
         passedPromise->reject(ec, ASCIILiteral("The requested operation is not valid for the provided key"));
         return;
     case UnknownError:
         passedPromise->reject(ec, ASCIILiteral("The operation failed for an unknown transient reason (e.g. out of memory)"));
         return;
     case DataError:
         passedPromise->reject(ec, ASCIILiteral("Data provided to an operation does not meet requirements"));
         return;
     case OperationError:
         passedPromise->reject(ec, ASCIILiteral("The operation failed for an operation-specific reason"));
         return;
     }
     ASSERT_NOT_REACHED();
 }

 static void jsSubtleCryptoFunctionGenerateKeyPromise(ExecState& state, Ref<DeferredPromise>&& promise)
 {
     VM& vm = state.vm();
     auto scope = DECLARE_THROW_SCOPE(vm);

     if (UNLIKELY(state.argumentCount() < 3)) {
         promise->reject<JSValue>(createNotEnoughArgumentsError(&state));
         return;
     }

     auto params = normalizeCryptoAlgorithmParameters(state, state.uncheckedArgument(0), Operations::GenerateKey);
     RETURN_IF_EXCEPTION(scope, void());

     auto extractable = state.uncheckedArgument(1).toBoolean(&state);
     RETURN_IF_EXCEPTION(scope, void());

     auto keyUsages = cryptoKeyUsagesFromJSValue(state, state.argument(2));
     RETURN_IF_EXCEPTION(scope, void());

     auto algorithm = createAlgorithm(state, params->identifier);
     RETURN_IF_EXCEPTION(scope, void());

     auto callback = [capturedPromise = promise.copyRef()](CryptoKey* key, CryptoKeyPair* keyPair) mutable {
         ASSERT(key || keyPair);
         ASSERT(!key || !keyPair);
         if (key) {
             if ((key->type() == CryptoKeyType::Private || key->type() == CryptoKeyType::Secret) && !key->usagesBitmap()) {
                 rejectWithException(WTFMove(capturedPromise), SYNTAX_ERR);
                 return;
             }
             capturedPromise->resolve(key);
         } else {
             if (!keyPair->privateKey()->usagesBitmap()) {
                 rejectWithException(WTFMove(capturedPromise), SYNTAX_ERR);
                 return;
             }
             capturedPromise->resolve(keyPair);
         }
     };
     auto exceptionCallback = [capturedPromise =  promise.copyRef()](ExceptionCode ec) mutable {
         rejectWithException(WTFMove(capturedPromise), ec);
     };

     // The spec suggests we should perform the following task asynchronously regardless what kind of keys it produces
     // as of 11 December 2014: https://www.w3.org/TR/WebCryptoAPI/#SubtleCrypto-method-generateKey
     // That's simply not efficient for AES and HMAC keys. Therefore, we perform it as an async task conditionally.
     algorithm->generateKey(WTFMove(params), extractable, keyUsages, WTFMove(callback), WTFMove(exceptionCallback), scriptExecutionContextFromExecState(&state));
 }

 JSValue JSSubtleCrypto::generateKey(ExecState& state)
 {
     return callPromiseFunction<jsSubtleCryptoFunctionGenerateKeyPromise, PromiseExecutionScope::WindowOrWorker>(state);
 }

 } // namespace WebCore

 #endif
	/*
	* Copyright (C) 2016 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 "JSSubtleCrypto.h"

	#if ENABLE(SUBTLE_CRYPTO)

	#include "CryptoAlgorithm.h"
	#include "CryptoAlgorithmRegistry.h"
	#include "JSAesKeyGenParams.h"
	#include "JSCryptoAlgorithmParameters.h"
	#include "JSCryptoKey.h"
	#include "JSCryptoKeyPair.h"
	#include "JSDOMPromise.h"
	#include "JSHmacKeyGenParams.h"
	#include "JSRsaHashedKeyGenParams.h"
	#include "JSRsaKeyGenParams.h"
	#include "ScriptState.h"
	#include <runtime/Error.h>
	#include <runtime/IteratorOperations.h>

	using namespace JSC;

	namespace WebCore {

	enum class Operations {
	GenerateKey,
	Digest,
	};

	static std::unique_ptr<CryptoAlgorithmParameters> normalizeCryptoAlgorithmParameters(ExecState&, JSValue, Operations);

	static CryptoAlgorithmIdentifier toHashIdentifier(ExecState& state, JSValue value)
	{
	VM& vm = state.vm();
	auto scope = DECLARE_THROW_SCOPE(vm);

	auto digestParams = normalizeCryptoAlgorithmParameters(state, value, Operations::Digest);
	RETURN_IF_EXCEPTION(scope, { });
	return digestParams->identifier;
	}

	static std::unique_ptr<CryptoAlgorithmParameters> normalizeCryptoAlgorithmParameters(ExecState& state, JSValue value, Operations operation)
	{
	VM& vm = state.vm();
	auto scope = DECLARE_THROW_SCOPE(vm);

	if (value.isString()) {
	JSObject* newParams = constructEmptyObject(&state);
	newParams->putDirect(vm, Identifier::fromString(&vm, "name"), value);
	return normalizeCryptoAlgorithmParameters(state, newParams, operation);
	}

	if (value.isObject()) {
	auto params = convertDictionary<CryptoAlgorithmParameters>(state, value);
	RETURN_IF_EXCEPTION(scope, nullptr);

	CryptoAlgorithmIdentifier identifier;
	if (!CryptoAlgorithmRegistry::singleton().getIdentifierForName(params.name, identifier)) {
	setDOMException(&state, NOT_SUPPORTED_ERR);
	return nullptr;
	}

	std::unique_ptr<CryptoAlgorithmParameters> result;
	switch (operation) {
	case Operations::GenerateKey:
	switch (identifier) {
	case CryptoAlgorithmIdentifier::RSAES_PKCS1_v1_5: {
	auto params = convertDictionary<CryptoAlgorithmRsaKeyGenParams>(state, value);
	RETURN_IF_EXCEPTION(scope, nullptr);
	result = std::make_unique<CryptoAlgorithmRsaKeyGenParams>(params);
	break;
	}
	case CryptoAlgorithmIdentifier::RSASSA_PKCS1_v1_5:
	case CryptoAlgorithmIdentifier::RSA_PSS:
	case CryptoAlgorithmIdentifier::RSA_OAEP: {
	auto params = convertDictionary<CryptoAlgorithmRsaHashedKeyGenParams>(state, value);
	RETURN_IF_EXCEPTION(scope, nullptr);
	params.hashIdentifier = toHashIdentifier(state, params.hash);
	RETURN_IF_EXCEPTION(scope, nullptr);
	result = std::make_unique<CryptoAlgorithmRsaHashedKeyGenParams>(params);
	break;
	}
	case CryptoAlgorithmIdentifier::AES_CTR:
	case CryptoAlgorithmIdentifier::AES_CBC:
	case CryptoAlgorithmIdentifier::AES_CMAC:
	case CryptoAlgorithmIdentifier::AES_GCM:
	case CryptoAlgorithmIdentifier::AES_CFB:
	case CryptoAlgorithmIdentifier::AES_KW: {
	auto params = convertDictionary<CryptoAlgorithmAesKeyGenParams>(state, value);
	RETURN_IF_EXCEPTION(scope, nullptr);
	result = std::make_unique<CryptoAlgorithmAesKeyGenParams>(params);
	break;
	}
	case CryptoAlgorithmIdentifier::HMAC: {
	auto params = convertDictionary<CryptoAlgorithmHmacKeyGenParams>(state, value);
	RETURN_IF_EXCEPTION(scope, nullptr);
	params.hashIdentifier = toHashIdentifier(state, params.hash);
	RETURN_IF_EXCEPTION(scope, nullptr);
	result = std::make_unique<CryptoAlgorithmHmacKeyGenParams>(params);
	break;
	}
	default:
	setDOMException(&state, NOT_SUPPORTED_ERR);
	return nullptr;
	}
	break;
	case Operations::Digest:
	switch (identifier) {
	case CryptoAlgorithmIdentifier::SHA_1:
	case CryptoAlgorithmIdentifier::SHA_224:
	case CryptoAlgorithmIdentifier::SHA_256:
	case CryptoAlgorithmIdentifier::SHA_384:
	case CryptoAlgorithmIdentifier::SHA_512:
	result = std::make_unique<CryptoAlgorithmParameters>(params);
	break;
	default:
	setDOMException(&state, NOT_SUPPORTED_ERR);
	return nullptr;
	}
	break;
	default:
	ASSERT_NOT_REACHED();
	return nullptr;
	}

	result->identifier = identifier;
	return result;
	}

	throwTypeError(&state, scope, ASCIILiteral("Invalid AlgorithmIdentifier"));
	return nullptr;
	}

	static CryptoKeyUsage cryptoKeyUsagesFromJSValue(ExecState& state, JSValue iterable)
	{
	VM& vm = state.vm();
	auto scope = DECLARE_THROW_SCOPE(vm);

	CryptoKeyUsage result = 0;
	forEachInIterable(&state, iterable, [&result](VM& vm, ExecState* state, JSValue nextItem) {
	auto scope = DECLARE_THROW_SCOPE(vm);

	String usageString = nextItem.toWTFString(state);
	RETURN_IF_EXCEPTION(scope, void());
	if (usageString == "encrypt")
	result \|= CryptoKeyUsageEncrypt;
	else if (usageString == "decrypt")
	result \|= CryptoKeyUsageDecrypt;
	else if (usageString == "sign")
	result \|= CryptoKeyUsageSign;
	else if (usageString == "verify")
	result \|= CryptoKeyUsageVerify;
	else if (usageString == "deriveKey")
	result \|= CryptoKeyUsageDeriveKey;
	else if (usageString == "deriveBits")
	result \|= CryptoKeyUsageDeriveBits;
	else if (usageString == "wrapKey")
	result \|= CryptoKeyUsageWrapKey;
	else if (usageString == "unwrapKey")
	result \|= CryptoKeyUsageUnwrapKey;
	else
	throwTypeError(state, scope, ASCIILiteral("Invalid KeyUsages"));
	});
	RETURN_IF_EXCEPTION(scope, 0);
	return result;
	}

	static RefPtr<CryptoAlgorithm> createAlgorithm(ExecState& state, CryptoAlgorithmIdentifier identifier)
	{
	auto result = CryptoAlgorithmRegistry::singleton().create(identifier);
	if (!result)
	setDOMException(&state, NOT_SUPPORTED_ERR);
	return result;
	}

	// Maybe we want more specific error messages?
	static void rejectWithException(Ref<DeferredPromise>&& passedPromise, ExceptionCode ec)
	{
	switch (ec) {
	case NOT_SUPPORTED_ERR:
	passedPromise->reject(ec, ASCIILiteral("The algorithm is not supported"));
	return;
	case SYNTAX_ERR:
	passedPromise->reject(ec, ASCIILiteral("A required parameter was missing or out-of-range"));
	return;
	case INVALID_STATE_ERR:
	passedPromise->reject(ec, ASCIILiteral("The requested operation is not valid for the current state of the provided key"));
	return;
	case INVALID_ACCESS_ERR:
	passedPromise->reject(ec, ASCIILiteral("The requested operation is not valid for the provided key"));
	return;
	case UnknownError:
	passedPromise->reject(ec, ASCIILiteral("The operation failed for an unknown transient reason (e.g. out of memory)"));
	return;
	case DataError:
	passedPromise->reject(ec, ASCIILiteral("Data provided to an operation does not meet requirements"));
	return;
	case OperationError:
	passedPromise->reject(ec, ASCIILiteral("The operation failed for an operation-specific reason"));
	return;
	}
	ASSERT_NOT_REACHED();
	}

	static void jsSubtleCryptoFunctionGenerateKeyPromise(ExecState& state, Ref<DeferredPromise>&& promise)
	{
	VM& vm = state.vm();
	auto scope = DECLARE_THROW_SCOPE(vm);

	if (UNLIKELY(state.argumentCount() < 3)) {
	promise->reject<JSValue>(createNotEnoughArgumentsError(&state));
	return;
	}

	auto params = normalizeCryptoAlgorithmParameters(state, state.uncheckedArgument(0), Operations::GenerateKey);
	RETURN_IF_EXCEPTION(scope, void());

	auto extractable = state.uncheckedArgument(1).toBoolean(&state);
	RETURN_IF_EXCEPTION(scope, void());

	auto keyUsages = cryptoKeyUsagesFromJSValue(state, state.argument(2));
	RETURN_IF_EXCEPTION(scope, void());

	auto algorithm = createAlgorithm(state, params->identifier);
	RETURN_IF_EXCEPTION(scope, void());

	auto callback = [capturedPromise = promise.copyRef()](CryptoKey* key, CryptoKeyPair* keyPair) mutable {
	ASSERT(key \|\| keyPair);
	ASSERT(!key \|\| !keyPair);
	if (key) {
	if ((key->type() == CryptoKeyType::Private \|\| key->type() == CryptoKeyType::Secret) && !key->usagesBitmap()) {
	rejectWithException(WTFMove(capturedPromise), SYNTAX_ERR);
	return;
	}
	capturedPromise->resolve(key);
	} else {
	if (!keyPair->privateKey()->usagesBitmap()) {
	rejectWithException(WTFMove(capturedPromise), SYNTAX_ERR);
	return;
	}
	capturedPromise->resolve(keyPair);
	}
	};
	auto exceptionCallback = [capturedPromise = promise.copyRef()](ExceptionCode ec) mutable {
	rejectWithException(WTFMove(capturedPromise), ec);
	};

	// The spec suggests we should perform the following task asynchronously regardless what kind of keys it produces
	// as of 11 December 2014: https://www.w3.org/TR/WebCryptoAPI/#SubtleCrypto-method-generateKey
	// That's simply not efficient for AES and HMAC keys. Therefore, we perform it as an async task conditionally.
	algorithm->generateKey(WTFMove(params), extractable, keyUsages, WTFMove(callback), WTFMove(exceptionCallback), scriptExecutionContextFromExecState(&state));
	}

	JSValue JSSubtleCrypto::generateKey(ExecState& state)
	{
	return callPromiseFunction<jsSubtleCryptoFunctionGenerateKeyPromise, PromiseExecutionScope::WindowOrWorker>(state);
	}

	} // namespace WebCore

	#endif