| /* |
| * Copyright (C) 2014 Google 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: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT |
| * OWNER OR 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 "third_party/blink/public/platform/web_crypto_key_algorithm.h" |
| |
| #include <memory> |
| #include <utility> |
| |
| #include "base/memory/ptr_util.h" |
| #include "third_party/blink/renderer/platform/wtf/thread_safe_ref_counted.h" |
| |
| namespace blink { |
| |
| // FIXME: Remove the need for this. |
| WebCryptoAlgorithm CreateHash(WebCryptoAlgorithmId hash) { |
| return WebCryptoAlgorithm::AdoptParamsAndCreate(hash, nullptr); |
| } |
| |
| class WebCryptoKeyAlgorithmPrivate |
| : public ThreadSafeRefCounted<WebCryptoKeyAlgorithmPrivate> { |
| public: |
| WebCryptoKeyAlgorithmPrivate( |
| WebCryptoAlgorithmId id, |
| std::unique_ptr<WebCryptoKeyAlgorithmParams> params) |
| : id(id), params(std::move(params)) {} |
| |
| WebCryptoAlgorithmId id; |
| std::unique_ptr<WebCryptoKeyAlgorithmParams> params; |
| }; |
| |
| WebCryptoKeyAlgorithm::WebCryptoKeyAlgorithm( |
| WebCryptoAlgorithmId id, |
| std::unique_ptr<WebCryptoKeyAlgorithmParams> params) |
| : private_(base::AdoptRef( |
| new WebCryptoKeyAlgorithmPrivate(id, std::move(params)))) {} |
| |
| WebCryptoKeyAlgorithm WebCryptoKeyAlgorithm::AdoptParamsAndCreate( |
| WebCryptoAlgorithmId id, |
| WebCryptoKeyAlgorithmParams* params) { |
| return WebCryptoKeyAlgorithm(id, base::WrapUnique(params)); |
| } |
| |
| WebCryptoKeyAlgorithm WebCryptoKeyAlgorithm::CreateAes( |
| WebCryptoAlgorithmId id, |
| uint16_t key_length_bits) { |
| // FIXME: Verify that id is an AES algorithm. |
| // FIXME: Move this somewhere more general. |
| if (key_length_bits != 128 && key_length_bits != 192 && |
| key_length_bits != 256) |
| return WebCryptoKeyAlgorithm(); |
| return WebCryptoKeyAlgorithm( |
| id, std::make_unique<WebCryptoAesKeyAlgorithmParams>(key_length_bits)); |
| } |
| |
| WebCryptoKeyAlgorithm WebCryptoKeyAlgorithm::CreateHmac( |
| WebCryptoAlgorithmId hash, |
| unsigned key_length_bits) { |
| if (!WebCryptoAlgorithm::IsHash(hash)) |
| return WebCryptoKeyAlgorithm(); |
| return WebCryptoKeyAlgorithm( |
| kWebCryptoAlgorithmIdHmac, |
| std::make_unique<WebCryptoHmacKeyAlgorithmParams>(CreateHash(hash), |
| key_length_bits)); |
| } |
| |
| WebCryptoKeyAlgorithm WebCryptoKeyAlgorithm::CreateRsaHashed( |
| WebCryptoAlgorithmId id, |
| unsigned modulus_length_bits, |
| const unsigned char* public_exponent, |
| unsigned public_exponent_size, |
| WebCryptoAlgorithmId hash) { |
| // FIXME: Verify that id is an RSA algorithm which expects a hash |
| if (!WebCryptoAlgorithm::IsHash(hash)) |
| return WebCryptoKeyAlgorithm(); |
| return WebCryptoKeyAlgorithm( |
| id, std::make_unique<WebCryptoRsaHashedKeyAlgorithmParams>( |
| modulus_length_bits, public_exponent, public_exponent_size, |
| CreateHash(hash))); |
| } |
| |
| WebCryptoKeyAlgorithm WebCryptoKeyAlgorithm::CreateEc( |
| WebCryptoAlgorithmId id, |
| WebCryptoNamedCurve named_curve) { |
| return WebCryptoKeyAlgorithm( |
| id, std::make_unique<WebCryptoEcKeyAlgorithmParams>(named_curve)); |
| } |
| |
| WebCryptoKeyAlgorithm WebCryptoKeyAlgorithm::CreateWithoutParams( |
| WebCryptoAlgorithmId id) { |
| if (!WebCryptoAlgorithm::IsKdf(id)) |
| return WebCryptoKeyAlgorithm(); |
| return WebCryptoKeyAlgorithm(id, nullptr); |
| } |
| |
| bool WebCryptoKeyAlgorithm::IsNull() const { |
| return private_.IsNull(); |
| } |
| |
| WebCryptoAlgorithmId WebCryptoKeyAlgorithm::Id() const { |
| DCHECK(!IsNull()); |
| return private_->id; |
| } |
| |
| WebCryptoKeyAlgorithmParamsType WebCryptoKeyAlgorithm::ParamsType() const { |
| DCHECK(!IsNull()); |
| if (!private_->params.get()) |
| return kWebCryptoKeyAlgorithmParamsTypeNone; |
| return private_->params->GetType(); |
| } |
| |
| WebCryptoAesKeyAlgorithmParams* WebCryptoKeyAlgorithm::AesParams() const { |
| DCHECK(!IsNull()); |
| if (ParamsType() == kWebCryptoKeyAlgorithmParamsTypeAes) |
| return static_cast<WebCryptoAesKeyAlgorithmParams*>(private_->params.get()); |
| return nullptr; |
| } |
| |
| WebCryptoHmacKeyAlgorithmParams* WebCryptoKeyAlgorithm::HmacParams() const { |
| DCHECK(!IsNull()); |
| if (ParamsType() == kWebCryptoKeyAlgorithmParamsTypeHmac) |
| return static_cast<WebCryptoHmacKeyAlgorithmParams*>( |
| private_->params.get()); |
| return nullptr; |
| } |
| |
| WebCryptoRsaHashedKeyAlgorithmParams* WebCryptoKeyAlgorithm::RsaHashedParams() |
| const { |
| DCHECK(!IsNull()); |
| if (ParamsType() == kWebCryptoKeyAlgorithmParamsTypeRsaHashed) |
| return static_cast<WebCryptoRsaHashedKeyAlgorithmParams*>( |
| private_->params.get()); |
| return nullptr; |
| } |
| |
| WebCryptoEcKeyAlgorithmParams* WebCryptoKeyAlgorithm::EcParams() const { |
| DCHECK(!IsNull()); |
| if (ParamsType() == kWebCryptoKeyAlgorithmParamsTypeEc) |
| return static_cast<WebCryptoEcKeyAlgorithmParams*>(private_->params.get()); |
| return nullptr; |
| } |
| |
| void WebCryptoKeyAlgorithm::WriteToDictionary( |
| WebCryptoKeyAlgorithmDictionary* dict) const { |
| DCHECK(!IsNull()); |
| dict->SetString("name", WebCryptoAlgorithm::LookupAlgorithmInfo(Id())->name); |
| if (private_->params.get()) |
| private_->params.get()->WriteToDictionary(dict); |
| } |
| |
| void WebCryptoKeyAlgorithm::Assign(const WebCryptoKeyAlgorithm& other) { |
| private_ = other.private_; |
| } |
| |
| void WebCryptoKeyAlgorithm::Reset() { |
| private_.Reset(); |
| } |
| |
| } // namespace blink |