root/public/platform/WebCryptoKeyAlgorithmParams.h

INCLUDED FROM

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 * modification, are permitted provided that the following conditions are
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 */

#ifndef WebCryptoKeyAlgorithmParams_h
#define WebCryptoKeyAlgorithmParams_h

#include "WebCommon.h"
#include "WebCryptoAlgorithm.h"
#include "WebVector.h"

// FIXME: Delete this once the chromium side has picked up the API change.
#define WEBCRYPTO_HMAC_KEY_HAS_LENGTH 1

namespace blink {

enum WebCryptoKeyAlgorithmParamsType {
    WebCryptoKeyAlgorithmParamsTypeNone,
    WebCryptoKeyAlgorithmParamsTypeHmac,
    WebCryptoKeyAlgorithmParamsTypeAes,
    WebCryptoKeyAlgorithmParamsTypeRsa,
    WebCryptoKeyAlgorithmParamsTypeRsaHashed
};

class WebCryptoKeyAlgorithmParams {
public:
    virtual ~WebCryptoKeyAlgorithmParams() { }
    virtual WebCryptoKeyAlgorithmParamsType type() const
    {
        return WebCryptoKeyAlgorithmParamsTypeNone;
    }
};

class WebCryptoAesKeyAlgorithmParams : public WebCryptoKeyAlgorithmParams {
public:
    explicit WebCryptoAesKeyAlgorithmParams(unsigned short lengthBits)
        : m_lengthBits(lengthBits)
    {
    }

    unsigned short lengthBits() const
    {
        return m_lengthBits;
    }

    virtual WebCryptoKeyAlgorithmParamsType type() const
    {
        return WebCryptoKeyAlgorithmParamsTypeAes;
    }

private:
    unsigned short m_lengthBits;
};

class WebCryptoHmacKeyAlgorithmParams : public WebCryptoKeyAlgorithmParams {
public:
    WebCryptoHmacKeyAlgorithmParams(const WebCryptoAlgorithm& hash, unsigned lengthBits)
        : m_hash(hash)
        , m_lengthBits(lengthBits)
    {
    }

    const WebCryptoAlgorithm& hash() const
    {
        return m_hash;
    }

    unsigned lengthBits() const
    {
        return m_lengthBits;
    }

    virtual WebCryptoKeyAlgorithmParamsType type() const
    {
        return WebCryptoKeyAlgorithmParamsTypeHmac;
    }

private:
    WebCryptoAlgorithm m_hash;
    unsigned m_lengthBits;
};

class WebCryptoRsaKeyAlgorithmParams : public WebCryptoKeyAlgorithmParams {
public:
    WebCryptoRsaKeyAlgorithmParams(unsigned modulusLengthBits, const unsigned char* publicExponent, unsigned publicExponentSize)
        : m_modulusLengthBits(modulusLengthBits)
        , m_publicExponent(publicExponent, publicExponentSize)
    {
    }

    unsigned modulusLengthBits() const
    {
        return m_modulusLengthBits;
    }

    const WebVector<unsigned char>& publicExponent() const
    {
        return m_publicExponent;
    }

    virtual WebCryptoKeyAlgorithmParamsType type() const
    {
        return WebCryptoKeyAlgorithmParamsTypeRsa;
    }

private:
    unsigned m_modulusLengthBits;
    WebVector<unsigned char> m_publicExponent;
};

class WebCryptoRsaHashedKeyAlgorithmParams : public WebCryptoRsaKeyAlgorithmParams {
public:
    WebCryptoRsaHashedKeyAlgorithmParams(unsigned modulusLengthBits, const unsigned char* publicExponent, unsigned publicExponentSize, const WebCryptoAlgorithm& hash)
        : WebCryptoRsaKeyAlgorithmParams(modulusLengthBits, publicExponent, publicExponentSize)
        , m_hash(hash)
    {
    }

    const WebCryptoAlgorithm& hash() const
    {
        return m_hash;
    }

    virtual WebCryptoKeyAlgorithmParamsType type() const
    {
        return WebCryptoKeyAlgorithmParamsTypeRsaHashed;
    }

private:
    WebCryptoAlgorithm m_hash;
};

} // namespace blink

#endif