root/Source/platform/exported/WebCryptoAlgorithm.cpp

DEFINITIONS

1. params
2. createNull
3. adoptParamsAndCreate
4. isNull
5. id
6. paramsType
7. aesCbcParams
8. aesCtrParams
9. aesKeyGenParams
10. hmacImportParams
11. hmacKeyGenParams
12. rsaKeyGenParams
13. aesGcmParams
14. rsaOaepParams
15. rsaHashedImportParams
16. rsaHashedKeyGenParams
17. isHash
18. assign
19. reset

/*
 * Copyright (C) 2013 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/WebCryptoAlgorithm.h"

#include "public/platform/WebCryptoAlgorithmParams.h"
#include "wtf/OwnPtr.h"
#include "wtf/ThreadSafeRefCounted.h"

namespace blink {

class WebCryptoAlgorithmPrivate : public ThreadSafeRefCounted<WebCryptoAlgorithmPrivate> {
public:
    WebCryptoAlgorithmPrivate(WebCryptoAlgorithmId id, PassOwnPtr<WebCryptoAlgorithmParams> params)
        : id(id)
        , params(params)
    {
    }

    WebCryptoAlgorithmId id;
    OwnPtr<WebCryptoAlgorithmParams> params;
};

WebCryptoAlgorithm::WebCryptoAlgorithm(WebCryptoAlgorithmId id, PassOwnPtr<WebCryptoAlgorithmParams> params)
    : m_private(adoptRef(new WebCryptoAlgorithmPrivate(id, params)))
{
}

WebCryptoAlgorithm WebCryptoAlgorithm::createNull()
{
    return WebCryptoAlgorithm();
}

WebCryptoAlgorithm WebCryptoAlgorithm::adoptParamsAndCreate(WebCryptoAlgorithmId id, WebCryptoAlgorithmParams* params)
{
    return WebCryptoAlgorithm(id, adoptPtr(params));
}

bool WebCryptoAlgorithm::isNull() const
{
    return m_private.isNull();
}

WebCryptoAlgorithmId WebCryptoAlgorithm::id() const
{
    ASSERT(!isNull());
    return m_private->id;
}

WebCryptoAlgorithmParamsType WebCryptoAlgorithm::paramsType() const
{
    ASSERT(!isNull());
    if (!m_private->params)
        return WebCryptoAlgorithmParamsTypeNone;
    return m_private->params->type();
}

const WebCryptoAesCbcParams* WebCryptoAlgorithm::aesCbcParams() const
{
    ASSERT(!isNull());
    if (paramsType() == WebCryptoAlgorithmParamsTypeAesCbcParams)
        return static_cast<WebCryptoAesCbcParams*>(m_private->params.get());
    return 0;
}

const WebCryptoAesCtrParams* WebCryptoAlgorithm::aesCtrParams() const
{
    ASSERT(!isNull());
    if (paramsType() == WebCryptoAlgorithmParamsTypeAesCtrParams)
        return static_cast<WebCryptoAesCtrParams*>(m_private->params.get());
    return 0;
}

const WebCryptoAesKeyGenParams* WebCryptoAlgorithm::aesKeyGenParams() const
{
    ASSERT(!isNull());
    if (paramsType() == WebCryptoAlgorithmParamsTypeAesKeyGenParams)
        return static_cast<WebCryptoAesKeyGenParams*>(m_private->params.get());
    return 0;
}

const WebCryptoHmacImportParams* WebCryptoAlgorithm::hmacImportParams() const
{
    ASSERT(!isNull());
    if (paramsType() == WebCryptoAlgorithmParamsTypeHmacImportParams)
        return static_cast<WebCryptoHmacImportParams*>(m_private->params.get());
    return 0;
}

const WebCryptoHmacKeyGenParams* WebCryptoAlgorithm::hmacKeyGenParams() const
{
    ASSERT(!isNull());
    if (paramsType() == WebCryptoAlgorithmParamsTypeHmacKeyGenParams)
        return static_cast<WebCryptoHmacKeyGenParams*>(m_private->params.get());
    return 0;
}

const WebCryptoRsaKeyGenParams* WebCryptoAlgorithm::rsaKeyGenParams() const
{
    ASSERT(!isNull());
    if (paramsType() == WebCryptoAlgorithmParamsTypeRsaKeyGenParams)
        return static_cast<WebCryptoRsaKeyGenParams*>(m_private->params.get());
    return 0;
}

const WebCryptoAesGcmParams* WebCryptoAlgorithm::aesGcmParams() const
{
    ASSERT(!isNull());
    if (paramsType() == WebCryptoAlgorithmParamsTypeAesGcmParams)
        return static_cast<WebCryptoAesGcmParams*>(m_private->params.get());
    return 0;
}

const WebCryptoRsaOaepParams* WebCryptoAlgorithm::rsaOaepParams() const
{
    ASSERT(!isNull());
    if (paramsType() == WebCryptoAlgorithmParamsTypeRsaOaepParams)
        return static_cast<WebCryptoRsaOaepParams*>(m_private->params.get());
    return 0;
}

const WebCryptoRsaHashedImportParams* WebCryptoAlgorithm::rsaHashedImportParams() const
{
    ASSERT(!isNull());
    if (paramsType() == WebCryptoAlgorithmParamsTypeRsaHashedImportParams)
        return static_cast<WebCryptoRsaHashedImportParams*>(m_private->params.get());
    return 0;
}

const WebCryptoRsaHashedKeyGenParams* WebCryptoAlgorithm::rsaHashedKeyGenParams() const
{
    ASSERT(!isNull());
    if (paramsType() == WebCryptoAlgorithmParamsTypeRsaHashedKeyGenParams)
        return static_cast<WebCryptoRsaHashedKeyGenParams*>(m_private->params.get());
    return 0;
}

bool WebCryptoAlgorithm::isHash(WebCryptoAlgorithmId id)
{
    switch (id) {
    case WebCryptoAlgorithmIdSha1:
    case WebCryptoAlgorithmIdSha256:
    case WebCryptoAlgorithmIdSha384:
    case WebCryptoAlgorithmIdSha512:
        return true;
    case WebCryptoAlgorithmIdAesCbc:
    case WebCryptoAlgorithmIdHmac:
    case WebCryptoAlgorithmIdRsaSsaPkcs1v1_5:
    case WebCryptoAlgorithmIdRsaEsPkcs1v1_5:
    case WebCryptoAlgorithmIdAesGcm:
    case WebCryptoAlgorithmIdRsaOaep:
    case WebCryptoAlgorithmIdAesCtr:
    case WebCryptoAlgorithmIdAesKw:
        break;
    }
    return false;
}

void WebCryptoAlgorithm::assign(const WebCryptoAlgorithm& other)
{
    m_private = other.m_private;
}

void WebCryptoAlgorithm::reset()
{
    m_private.reset();
}

} // namespace blink