Hmac.h

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#ifndef HMAC_H_
#define HMAC_H_

#include <openssl/hmac.h>
#include <libcryptosec/ByteArray.h>
#include <libcryptosec/MessageDigest.h>
#include <libcryptosec/Engine.h>
#include <libcryptosec/exception/InvalidStateException.h>
#include <libcryptosec/exception/HmacException.h>
#include <vector>

class Hmac {

public:
    Hmac();

    Hmac(std::string key, MessageDigest::Algorithm algorithm) throw (HmacException);

    Hmac(ByteArray key, MessageDigest::Algorithm algorithm) throw (HmacException);

    Hmac(std::string key, MessageDigest::Algorithm algorithm, Engine &engine) throw (HmacException);

    Hmac(ByteArray key, MessageDigest::Algorithm algorithm, Engine &engine) throw (HmacException);

    virtual ~Hmac();

    void init(ByteArray &key, MessageDigest::Algorithm algorithm) throw (HmacException);

    void init(ByteArray &key, MessageDigest::Algorithm algorithm, Engine &engine) throw (HmacException);

    void init(std::string key, MessageDigest::Algorithm algorithm) throw (HmacException);

    void init(std::string key, MessageDigest::Algorithm algorithm, Engine &engine) throw (HmacException);

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

    void update(std::string data) throw (HmacException, InvalidStateException);

    void update(std::vector<std::string> &data) throw (HmacException, InvalidStateException);

    void update(std::vector<ByteArray> &data) throw (HmacException, InvalidStateException);

    ByteArray doFinal(ByteArray &data) throw (HmacException, InvalidStateException);

    ByteArray doFinal(std::string data) throw (HmacException, InvalidStateException);

    ByteArray doFinal() throw (HmacException, InvalidStateException);

protected:
    enum State {
        NO_INIT,
        INIT,
        UPDATE,
    };

    MessageDigest::Algorithm algorithm;

    State state;

    HMAC_CTX ctx;

};

#endif