MessageDigest.h

Go to the documentation of this file.

#ifndef MESSAGEDIGEST_H_
#define MESSAGEDIGEST_H_

#include <openssl/evp.h>
#include <string>
#include "ByteArray.h"
#include "Engine.h"
#include <libcryptosec/exception/MessageDigestException.h>
#include <libcryptosec/exception/InvalidStateException.h>

class MessageDigest
{
public:

    enum Algorithm
    {
        MD4,
        MD5,
        RIPEMD160,
        SHA,
        SHA1,
        SHA224,
        SHA256,
        SHA384,
        SHA512,
    };
    
    MessageDigest();
    
    MessageDigest(MessageDigest::Algorithm algorithm) throw (MessageDigestException);
    
    MessageDigest(MessageDigest::Algorithm algorithm, Engine &engine) throw (MessageDigestException);
    
    virtual ~MessageDigest();
    
    void init(MessageDigest::Algorithm algorithm) throw (MessageDigestException);
    
    void init(MessageDigest::Algorithm algorithm, Engine &engine) throw (MessageDigestException);

    void update(ByteArray &data) throw (MessageDigestException, InvalidStateException);

    void update(std::string &data) throw (MessageDigestException, InvalidStateException);
    
    ByteArray doFinal() throw (MessageDigestException, InvalidStateException);
    
    ByteArray doFinal(ByteArray &data) throw (MessageDigestException, InvalidStateException);


    ByteArray doFinal(std::string &data) throw (MessageDigestException, InvalidStateException);
    
    MessageDigest::Algorithm getAlgorithm() throw (InvalidStateException);
    
    
    static const EVP_MD* getMessageDigest(MessageDigest::Algorithm algorithm);
    
    static MessageDigest::Algorithm getMessageDigest(int algorithmNid)
            throw (MessageDigestException);
    
    
    static void loadMessageDigestAlgorithms();
protected:

    enum State
    {
        NO_INIT,
        INIT,
        UPDATE,
    };
    
    MessageDigest::Algorithm algorithm;
    
    MessageDigest::State state;
    
    EVP_MD_CTX ctx;
};

#endif /*MESSAGEDIGEST_H_*/