RSASignature.h

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/*
 * Copyright (C) 2012 by
 *   MetraLabs GmbH (MLAB), GERMANY
 * and
 *   Neuroinformatics and Cognitive Robotics Labs (NICR) at TU Ilmenau, GERMANY
 * All rights reserved.
 *
 * Contact: info@mira-project.org
 *
 * Commercial Usage:
 *   Licensees holding valid commercial licenses may use this file in
 *   accordance with the commercial license agreement provided with the
 *   software or, alternatively, in accordance with the terms contained in
 *   a written agreement between you and MLAB or NICR.
 *
 * GNU General Public License Usage:
 *   Alternatively, this file may be used under the terms of the GNU
 *   General Public License version 3.0 as published by the Free Software
 *   Foundation and appearing in the file LICENSE.GPL3 included in the
 *   packaging of this file. Please review the following information to
 *   ensure the GNU General Public License version 3.0 requirements will be
 *   met: http://www.gnu.org/copyleft/gpl.html.
 *   Alternatively you may (at your option) use any later version of the GNU
 *   General Public License if such license has been publicly approved by
 *   MLAB and NICR (or its successors, if any).
 *
 * IN NO EVENT SHALL "MLAB" OR "NICR" BE LIABLE TO ANY PARTY FOR DIRECT,
 * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
 * THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF "MLAB" OR
 * "NICR" HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * "MLAB" AND "NICR" SPECIFICALLY DISCLAIM ANY WARRANTIES, INCLUDING,
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
 * ON AN "AS IS" BASIS, AND "MLAB" AND "NICR" HAVE NO OBLIGATION TO
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 */

#ifndef _MIRA_RSASIGNATURE_H_
#define _MIRA_RSASIGNATURE_H_

#include <sstream>

#include <platform/Types.h>
#include <error/Exceptions.h>
#include <serialization/SplitReflect.h>
#include <serialization/IsTransparentSerializable.h>

#include <security/RSAKey.h>

namespace mira {


class MIRA_BASE_EXPORT RSASignature
{
public:
    enum DigestType {
        DIGEST_MD5,
        DIGEST_SHA1,
        DIGEST_SHA256,
        DIGEST_SHA512
    };

public:

    RSASignature();

    RSASignature(const RSASignature& signatur);

    virtual ~RSASignature();


public:

    MIRA_SPLIT_REFLECT_MEMBER

    template<typename Reflector>
    void reflectRead(Reflector& r)
    {
        std::stringstream ss;
        ss << (*this);
        std::string str = ss.str();
        r.delegate(str);
    }

    template<typename Reflector>
    void reflectWrite(Reflector& r)
    {
        std::string str;
        r.delegate(str);
        std::stringstream ss(str);
        ss >> (*this);
    }


public:

    RSASignature& operator=(const RSASignature& signature);


public:

    size_t getSize() const { return(mSize); }

    const uint8* getSignature() const { return(mData); }


public:

    static RSASignature signMessage(const RSAKey& iPrivateKey,
                                    DigestType iDigestType,
                                    const char* iMsg,
                                    size_t iMsgLen);

    static bool verifyMessage(const RSAKey& iPublicKey,
                              DigestType iDigestType,
                              const char* iMsg,
                              size_t iMsgLen,
                              const RSASignature& iSignature);


private:
    friend MIRA_BASE_EXPORT std::ostream& operator<<(std::ostream& stream,
                                                     const RSASignature& signature);
    friend MIRA_BASE_EXPORT std::istream& operator>>(std::istream& stream, 
                                                     RSASignature& signature);

private:
    size_t mSize;
    uint8* mData;
};


MIRA_BASE_EXPORT std::ostream& operator<<(std::ostream& stream,
                                          const RSASignature& signature);

MIRA_BASE_EXPORT std::istream& operator>>(std::istream& stream,
                                          RSASignature& signature);


template<typename SerializerTag>
class IsTransparentSerializable<RSASignature,SerializerTag> : public std::true_type {};


} // namespaces

#endif