| /* |
| * 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 "config.h" |
| #include "public/platform/WebCryptoKeyAlgorithm.h" |
| |
| #include "wtf/OwnPtr.h" |
| #include "wtf/ThreadSafeRefCounted.h" |
| |
| namespace blink { |
| |
| // FIXME: Remove the need for this. |
| WebCryptoAlgorithm createHash(WebCryptoAlgorithmId hash) |
| { |
| return WebCryptoAlgorithm::adoptParamsAndCreate(hash, 0); |
| } |
| |
| class WebCryptoKeyAlgorithmPrivate : public ThreadSafeRefCounted<WebCryptoKeyAlgorithmPrivate> { |
| public: |
| WebCryptoKeyAlgorithmPrivate(WebCryptoAlgorithmId id, PassOwnPtr<WebCryptoKeyAlgorithmParams> params) |
| : id(id) |
| , params(params) |
| { |
| } |
| |
| WebCryptoAlgorithmId id; |
| OwnPtr<WebCryptoKeyAlgorithmParams> params; |
| }; |
| |
| WebCryptoKeyAlgorithm::WebCryptoKeyAlgorithm(WebCryptoAlgorithmId id, PassOwnPtr<WebCryptoKeyAlgorithmParams> params) |
| : m_private(adoptRef(new WebCryptoKeyAlgorithmPrivate(id, params))) |
| { |
| } |
| |
| WebCryptoKeyAlgorithm WebCryptoKeyAlgorithm::adoptParamsAndCreate(WebCryptoAlgorithmId id, WebCryptoKeyAlgorithmParams* params) |
| { |
| return WebCryptoKeyAlgorithm(id, adoptPtr(params)); |
| } |
| |
| WebCryptoKeyAlgorithm WebCryptoKeyAlgorithm::createAes(WebCryptoAlgorithmId id, unsigned short keyLengthBits) |
| { |
| // FIXME: Verify that id is an AES algorithm. |
| // FIXME: Move this somewhere more general. |
| if (keyLengthBits != 128 && keyLengthBits != 192 && keyLengthBits != 256) |
| return WebCryptoKeyAlgorithm(); |
| return WebCryptoKeyAlgorithm(id, adoptPtr(new WebCryptoAesKeyAlgorithmParams(keyLengthBits))); |
| } |
| |
| WebCryptoKeyAlgorithm WebCryptoKeyAlgorithm::createHmac(WebCryptoAlgorithmId hash, unsigned keyLengthBits) |
| { |
| if (!WebCryptoAlgorithm::isHash(hash)) |
| return WebCryptoKeyAlgorithm(); |
| return WebCryptoKeyAlgorithm(WebCryptoAlgorithmIdHmac, adoptPtr(new WebCryptoHmacKeyAlgorithmParams(createHash(hash), keyLengthBits))); |
| } |
| |
| WebCryptoKeyAlgorithm WebCryptoKeyAlgorithm::createRsaHashed(WebCryptoAlgorithmId id, unsigned modulusLengthBits, const unsigned char* publicExponent, unsigned publicExponentSize, WebCryptoAlgorithmId hash) |
| { |
| // FIXME: Verify that id is an RSA algorithm which expects a hash |
| if (!WebCryptoAlgorithm::isHash(hash)) |
| return WebCryptoKeyAlgorithm(); |
| return WebCryptoKeyAlgorithm(id, adoptPtr(new WebCryptoRsaHashedKeyAlgorithmParams(modulusLengthBits, publicExponent, publicExponentSize, createHash(hash)))); |
| } |
| |
| bool WebCryptoKeyAlgorithm::isNull() const |
| { |
| return m_private.isNull(); |
| } |
| |
| WebCryptoAlgorithmId WebCryptoKeyAlgorithm::id() const |
| { |
| ASSERT(!isNull()); |
| return m_private->id; |
| } |
| |
| WebCryptoKeyAlgorithmParamsType WebCryptoKeyAlgorithm::paramsType() const |
| { |
| ASSERT(!isNull()); |
| if (!m_private->params.get()) |
| return WebCryptoKeyAlgorithmParamsTypeNone; |
| return m_private->params->type(); |
| } |
| |
| WebCryptoAesKeyAlgorithmParams* WebCryptoKeyAlgorithm::aesParams() const |
| { |
| ASSERT(!isNull()); |
| if (paramsType() == WebCryptoKeyAlgorithmParamsTypeAes) |
| return static_cast<WebCryptoAesKeyAlgorithmParams*>(m_private->params.get()); |
| return 0; |
| } |
| |
| WebCryptoHmacKeyAlgorithmParams* WebCryptoKeyAlgorithm::hmacParams() const |
| { |
| ASSERT(!isNull()); |
| if (paramsType() == WebCryptoKeyAlgorithmParamsTypeHmac) |
| return static_cast<WebCryptoHmacKeyAlgorithmParams*>(m_private->params.get()); |
| return 0; |
| } |
| |
| WebCryptoRsaHashedKeyAlgorithmParams* WebCryptoKeyAlgorithm::rsaHashedParams() const |
| { |
| ASSERT(!isNull()); |
| if (paramsType() == WebCryptoKeyAlgorithmParamsTypeRsaHashed) |
| return static_cast<WebCryptoRsaHashedKeyAlgorithmParams*>(m_private->params.get()); |
| return 0; |
| } |
| |
| void WebCryptoKeyAlgorithm::writeToDictionary(WebCryptoKeyAlgorithmDictionary* dict) const |
| { |
| ASSERT(!isNull()); |
| dict->setString("name", WebCryptoAlgorithm::lookupAlgorithmInfo(id())->name); |
| m_private->params.get()->writeToDictionary(dict); |
| } |
| |
| void WebCryptoKeyAlgorithm::assign(const WebCryptoKeyAlgorithm& other) |
| { |
| m_private = other.m_private; |
| } |
| |
| void WebCryptoKeyAlgorithm::reset() |
| { |
| m_private.reset(); |
| } |
| |
| } // namespace blink |