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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.
#include "components/webcrypto/algorithm_registry.h"
#include "base/lazy_instance.h"
#include "components/webcrypto/algorithm_implementation.h"
#include "components/webcrypto/platform_crypto.h"
#include "components/webcrypto/status.h"
namespace webcrypto {
namespace {
// This class is used as a singleton. All methods must be threadsafe.
class AlgorithmRegistry {
public:
AlgorithmRegistry()
: sha_(CreatePlatformShaImplementation()),
aes_gcm_(CreatePlatformAesGcmImplementation()),
aes_cbc_(CreatePlatformAesCbcImplementation()),
aes_ctr_(CreatePlatformAesCtrImplementation()),
aes_kw_(CreatePlatformAesKwImplementation()),
hmac_(CreatePlatformHmacImplementation()),
rsa_ssa_(CreatePlatformRsaSsaImplementation()),
rsa_oaep_(CreatePlatformRsaOaepImplementation()),
rsa_pss_(CreatePlatformRsaPssImplementation()),
ecdsa_(CreatePlatformEcdsaImplementation()),
ecdh_(CreatePlatformEcdhImplementation()),
hkdf_(CreatePlatformHkdfImplementation()),
pbkdf2_(CreatePlatformPbkdf2Implementation()) {
PlatformInit();
}
const AlgorithmImplementation* GetAlgorithm(
blink::WebCryptoAlgorithmId id) const {
switch (id) {
case blink::WebCryptoAlgorithmIdSha1:
case blink::WebCryptoAlgorithmIdSha256:
case blink::WebCryptoAlgorithmIdSha384:
case blink::WebCryptoAlgorithmIdSha512:
return sha_.get();
case blink::WebCryptoAlgorithmIdAesGcm:
return aes_gcm_.get();
case blink::WebCryptoAlgorithmIdAesCbc:
return aes_cbc_.get();
case blink::WebCryptoAlgorithmIdAesCtr:
return aes_ctr_.get();
case blink::WebCryptoAlgorithmIdAesKw:
return aes_kw_.get();
case blink::WebCryptoAlgorithmIdHmac:
return hmac_.get();
case blink::WebCryptoAlgorithmIdRsaSsaPkcs1v1_5:
return rsa_ssa_.get();
case blink::WebCryptoAlgorithmIdRsaOaep:
return rsa_oaep_.get();
case blink::WebCryptoAlgorithmIdRsaPss:
return rsa_pss_.get();
case blink::WebCryptoAlgorithmIdEcdsa:
return ecdsa_.get();
case blink::WebCryptoAlgorithmIdEcdh:
return ecdh_.get();
case blink::WebCryptoAlgorithmIdHkdf:
return hkdf_.get();
case blink::WebCryptoAlgorithmIdPbkdf2:
return pbkdf2_.get();
default:
return NULL;
}
}
private:
const scoped_ptr<AlgorithmImplementation> sha_;
const scoped_ptr<AlgorithmImplementation> aes_gcm_;
const scoped_ptr<AlgorithmImplementation> aes_cbc_;
const scoped_ptr<AlgorithmImplementation> aes_ctr_;
const scoped_ptr<AlgorithmImplementation> aes_kw_;
const scoped_ptr<AlgorithmImplementation> hmac_;
const scoped_ptr<AlgorithmImplementation> rsa_ssa_;
const scoped_ptr<AlgorithmImplementation> rsa_oaep_;
const scoped_ptr<AlgorithmImplementation> rsa_pss_;
const scoped_ptr<AlgorithmImplementation> ecdsa_;
const scoped_ptr<AlgorithmImplementation> ecdh_;
const scoped_ptr<AlgorithmImplementation> hkdf_;
const scoped_ptr<AlgorithmImplementation> pbkdf2_;
};
} // namespace
base::LazyInstance<AlgorithmRegistry>::Leaky g_algorithm_registry =
LAZY_INSTANCE_INITIALIZER;
Status GetAlgorithmImplementation(blink::WebCryptoAlgorithmId id,
const AlgorithmImplementation** impl) {
*impl = g_algorithm_registry.Get().GetAlgorithm(id);
if (*impl)
return Status::Success();
return Status::ErrorUnsupported();
}
} // namespace webcrypto
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