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// 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.
#ifndef CONTENT_CHILD_WEBCRYPTO_SHARED_CRYPTO_H_
#define CONTENT_CHILD_WEBCRYPTO_SHARED_CRYPTO_H_
#include <vector>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "content/common/content_export.h"
#include "third_party/WebKit/public/platform/WebArrayBuffer.h"
#include "third_party/WebKit/public/platform/WebCrypto.h"
#include "third_party/WebKit/public/platform/WebCryptoAlgorithmParams.h"
namespace content {
namespace webcrypto {
class CryptoData;
class Status;
// Do one-time initialization. It is safe to call this multiple times.
CONTENT_EXPORT void Init();
// The functions exported by shared_crypto.h provide a common entry point for
// synchronous crypto operations.
//
// Here is how the layer cake looks.
//
// Blink
// |
// ==============|==========================
// |
// content
// |
// |
// v
// WebCryptoImpl (Implements the blink::WebCrypto interface for
// | asynchronous completions; posts tasks to
// | the webcrypto worker pool to fulfill the request
// using the synchronous methods of shared_crypto.h)
// |
// | [shared_crypto_unittest.cc]
// | /
// | / (The blink::WebCrypto interface is not
// | / testable from the chromium side because
// | / the result object is not mockable.
// | / Tests are done on shared_crypto instead.
// V v
// [shared_crypto.h] (Exposes synchronous functions in the
// | webcrypto:: namespace. This does
// | common validations, infers default
// | parameters, and casts the algorithm
// | parameters to the right types)
// |
// V
// [platform_crypto.h] (Exposes functions in the webcrypto::platform
// | namespace)
// |
// |
// V
// [platform_crypto_{nss|openssl}.cc] (Implements using the platform crypto
// library)
//
// The shared_crypto.h functions are responsible for:
//
// * Validating the key usages
// * Inferring default parameters when not specified
// * Validating key exportability
// * Validating algorithm with key.algorithm
// * Converting the Blink key to a more specific platform::{PublicKey,
// PrivateKey, SymKey} and making sure it was the right type.
// * Validating alogorithm specific parameters (for instance, was the iv for
// AES-CBC 16 bytes).
// * Parse a JWK
CONTENT_EXPORT Status Encrypt(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
const CryptoData& data,
std::vector<uint8>* buffer);
CONTENT_EXPORT Status Decrypt(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
const CryptoData& data,
std::vector<uint8>* buffer);
CONTENT_EXPORT Status Digest(const blink::WebCryptoAlgorithm& algorithm,
const CryptoData& data,
std::vector<uint8>* buffer);
CONTENT_EXPORT scoped_ptr<blink::WebCryptoDigestor> CreateDigestor(
blink::WebCryptoAlgorithmId algorithm);
CONTENT_EXPORT Status
GenerateSecretKey(const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usage_mask,
blink::WebCryptoKey* key);
CONTENT_EXPORT Status
GenerateKeyPair(const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usage_mask,
blink::WebCryptoKey* public_key,
blink::WebCryptoKey* private_key);
CONTENT_EXPORT Status ImportKey(blink::WebCryptoKeyFormat format,
const CryptoData& key_data,
const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usage_mask,
blink::WebCryptoKey* key);
CONTENT_EXPORT Status ExportKey(blink::WebCryptoKeyFormat format,
const blink::WebCryptoKey& key,
std::vector<uint8>* buffer);
CONTENT_EXPORT Status Sign(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
const CryptoData& data,
std::vector<uint8>* buffer);
CONTENT_EXPORT Status
VerifySignature(const blink::WebCryptoAlgorithm& algorithm,
const blink::WebCryptoKey& key,
const CryptoData& signature,
const CryptoData& data,
bool* signature_match);
CONTENT_EXPORT Status
WrapKey(blink::WebCryptoKeyFormat format,
const blink::WebCryptoKey& wrapping_key,
const blink::WebCryptoKey& key_to_wrap,
const blink::WebCryptoAlgorithm& wrapping_algorithm,
std::vector<uint8>* buffer);
CONTENT_EXPORT Status
UnwrapKey(blink::WebCryptoKeyFormat format,
const CryptoData& wrapped_key_data,
const blink::WebCryptoKey& wrapping_key,
const blink::WebCryptoAlgorithm& wrapping_algorithm,
const blink::WebCryptoAlgorithm& algorithm,
bool extractable,
blink::WebCryptoKeyUsageMask usage_mask,
blink::WebCryptoKey* key);
// Called on the target Blink thread.
CONTENT_EXPORT bool SerializeKeyForClone(const blink::WebCryptoKey& key,
blink::WebVector<uint8>* key_data);
// Called on the target Blink thread.
CONTENT_EXPORT bool DeserializeKeyForClone(
const blink::WebCryptoKeyAlgorithm& algorithm,
blink::WebCryptoKeyType type,
bool extractable,
blink::WebCryptoKeyUsageMask usage_mask,
const CryptoData& key_data,
blink::WebCryptoKey* key);
} // namespace webcrypto
} // namespace content
#endif // CONTENT_CHILD_WEBCRYPTO_SHARED_CRYPTO_H_
|
