Source/WebCore/page/Crypto.cpp

/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions
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 *
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 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY GOOGLE AND ITS 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
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#include "config.h"
#include "Crypto.h"

#include "ExceptionCode.h"
#include "Uint8Array.h"
#include <wtf/CryptographicallyRandomNumber.h>

namespace WebCore {

namespace {

bool isIntegerArray(ArrayBufferView* array)
{
    return array->isByteArray()
        || array->isUnsignedByteArray()
        || array->isShortArray()
        || array->isUnsignedShortArray()
        || array->isIntArray()
        || array->isUnsignedIntArray();
}

}

Crypto::Crypto()
{
}

void Crypto::getRandomValues(ArrayBufferView* array, ExceptionCode& ec)
{
#if USE(OS_RANDOMNESS)
    if (!array || !isIntegerArray(array)) {
        ec = TYPE_MISMATCH_ERR;
        return;
    }
    cryptographicallyRandomValues(array->baseAddress(), array->byteLength());
#else
    ASSERT_UNUSED(array, array);
    ec = NOT_SUPPORTED_ERR;
#endif
}

}