source: terepaima/signHash/cryptotoken.cpp @ baaf582

#include "cryptotoken.h"

#include <QSslCertificate>

#include <assert.h>
#include <iostream>
#include <stdexcept>

#define BINARY_SHA1_LENGTH 20
#define BINARY_SHA224_LENGTH 28
#define BINARY_SHA256_LENGTH 32
#define BINARY_SHA384_LENGTH 48
#define BINARY_SHA512_LENGTH 64


CryptoToken::CryptoToken()
{
}


CryptoToken::~CryptoToken()
{
}


bool CryptoToken::initializeCriptoki()
{
    QString error("");
    CK_RV rv;
    rv = C_Initialize(NULL_PTR);
    if (rv != CKR_OK)
    {
        if (rv == CKR_DEVICE_ERROR)
        {
            error = returnErrorToQString(rv);
            qDebug(qPrintable(error));
            return false;
        }
        error = returnErrorToQString(rv);
        qDebug(qPrintable(error));
        return false;
    }
    else
    {
        return true;
    }
}

void CryptoToken::finalize() {
    CK_RV rv;
    rv = C_Finalize(NULL_PTR);
    QString error("");
    if (rv != CKR_OK)
    {
        qDebug("** Destruyendo ... ~SmartCard");
        if (rv == CKR_DEVICE_ERROR)
        {
            error = returnErrorToQString(rv);
            qDebug(qPrintable(error));
        }
        error = returnErrorToQString(rv);
        qDebug(qPrintable(error));
    }
}

CK_SESSION_HANDLE CryptoToken::openSession(char * Pin, CK_SLOT_ID & slotID, bool requiredlogin)
{
    qDebug("openSession()");
    QString error("");

    CK_RV rv;

    CK_SLOT_ID SlotList[10];
    CK_ULONG ulCount = sizeof(SlotList)/sizeof(CK_SLOT_ID);

    CK_SESSION_HANDLE hSession;

    /*
    ** Find the first slot available that has a token present
    */
    rv = C_GetSlotList(TRUE,SlotList,&ulCount);
    //assert(rv==CKR_OK);
    //assert(ulCount>0);
    //if ( (rv != CKR_OK) && (ulCount<=0) )
    if (rv != CKR_OK)
    {
        error = returnErrorToQString(rv);
        qDebug(qPrintable("Insertar una tarjeta en el lector. " + error));
        throw std::runtime_error(qPrintable(error));
        //return CK_INVALID_HANDLE;

    }
    if ( ulCount<=0 )
    {
        error = returnErrorToQString(rv);
        qDebug(qPrintable("ulCount <= 0"+ error));
        throw std::runtime_error(qPrintable("Error: no hay dispositivo conectado."));
        //return CK_INVALID_HANDLE;

    }
    //slotID = new CK_SLOT_ID() ;
    slotID = SlotList[0];

    /*
    ** Log in the User to session
    */
    if ( requiredlogin ) {

        /*
        ** Open a read/write session with this slot's token
        */
        //rv = C_OpenSession(slotID,CKF_SERIAL_SESSION|CKF_RW_SESSION,0,0,&hSession);
        rv = C_OpenSession(slotID, CKF_SERIAL_SESSION|CKF_RW_SESSION, NULL_PTR, (CK_NOTIFY) NULL_PTR, &hSession);

        //assert(rv==CKR_OK);
        if (rv != CKR_OK)
        {
            error = returnErrorToQString(rv);
            qDebug(qPrintable("C_OpenSession" + error));
            throw std::runtime_error(qPrintable(error));
            //return CK_INVALID_HANDLE;
        }

        rv = C_Login(hSession,CKU_USER, (unsigned char *) Pin,strlen(Pin));
        //assert(rv==CKR_OK);
        if (rv != CKR_OK)
        {
            error = returnErrorToQString(rv);
            QString plus("");
            if ((rv == CKR_PIN_INCORRECT) || (rv == CKR_DATA_LEN_RANGE) || (rv == CKR_ARGUMENTS_BAD))
                plus = "El PIN introducido es incorrecto!";
            qDebug(qPrintable("C_login: "  + error + " " +plus));
            throw std::runtime_error(qPrintable("Error: pin incorrecto."));
            //return CK_INVALID_HANDLE;
        }

    } else {
        rv = C_OpenSession(slotID, CKF_SERIAL_SESSION, NULL_PTR,(CK_NOTIFY) NULL_PTR, &hSession);

        //assert(rv==CKR_OK);
        if (rv != CKR_OK)
        {
            error = returnErrorToQString(rv);
            qDebug(qPrintable("C_OpenSession" + error));
            throw std::runtime_error(qPrintable(error));
            //return CK_INVALID_HANDLE;
        }
    }
    /*
    ** Return the session handle and exit
    */
    return hSession;
}



void CryptoToken::closeSession(CK_SESSION_HANDLE hSession)
{
    CK_RV rv;
    rv = C_CloseSession(hSession);
    QString error("");
    if (rv != CKR_OK){
        qDebug("** Destruyendo ... ~SmartCard");
        if (rv == CKR_DEVICE_ERROR)
        {
            error = returnErrorToQString(rv);
            qDebug(qPrintable("C_Finalize" + error));

        }
        error = returnErrorToQString(rv);
        qDebug(qPrintable("C_Finalize" + error));
    }

}


CK_OBJECT_HANDLE CryptoToken::getPrivateKey(CK_SESSION_HANDLE hSession, CK_SLOT_ID slotID, QString id)
{
    QString error("");

    CK_RV rv;
    CK_OBJECT_HANDLE hObject = CK_INVALID_HANDLE;
    CK_OBJECT_CLASS objClass = CKO_PRIVATE_KEY;
    CK_ULONG ulCount = 0;


    //CK_BYTE keyid[strlen(id)+1];
    //strcpy((char *)keyid,id);
    int idLen = strlen(qPrintable(id))+1;

    CK_UTF8CHAR label[idLen];

    strcpy((char *) label, qPrintable(id));
    qDebug("SmartCard::getPrivateKey label:");
    qDebug((char *) label);

    //qDebug("VALOR DE keyid");
    //qDebug((char *)keyid);

    CK_ATTRIBUTE privateKeyTemplate[] = {
        { CKA_CLASS, &objClass, sizeof (objClass) },
        { CKA_LABEL, label, sizeof(label)-1 }
        //{CKA_ID, keyid, sizeof (keyid)}
    };

    CK_ULONG ulTemplateCount = sizeof (privateKeyTemplate) / sizeof (privateKeyTemplate[0]);

    /* Pre-condition checks. */
    assert (hSession != NULL_PTR);

    // comienza la busqueda de clave privada
    qDebug ("Inicia busqueda de clave privada ... \n");

    rv = C_FindObjectsInit(hSession, privateKeyTemplate, ulTemplateCount);
    qDebug ("C_FindObjectsInit rv = %x",rv);
    qDebug ("\n");
    //assert(rv==CKR_OK);
    if (rv != CKR_OK)
    {
        error = returnErrorToQString(rv);
        qDebug(qPrintable("C_FindObjectsInit: "+error));
        return CK_INVALID_HANDLE;

    }


    // se realiza la busqueda
    rv = C_FindObjects(hSession, &hObject, 1, &ulCount);
    qDebug ("C_FindObjects rv = %x",rv);
    qDebug ("\n");
    //assert(rv==CKR_OK);

    qDebug("*-*-*-*-*getPrivateKey VALOR DE ulCount %u: ", ulCount);
    //if (rv != CKR_OK)
    if ((rv != CKR_OK) )//|| (ulCount == 0))
    {
        if (ulCount == 0)
            qDebug("ulCount == 0");

        error = returnErrorToQString(rv);
        qDebug(qPrintable("C_FindObjects: "+error));
        return CK_INVALID_HANDLE;

    }

    rv = C_FindObjectsFinal(hSession);
    qDebug ("C_FindObjectsFinal rv = %x",rv);
    qDebug ("\n");
    //assert(rv==CKR_OK);
    if (rv != CKR_OK)
    {
        error = returnErrorToQString(rv);
        qDebug(qPrintable("C_FindObjectsFinal: "+error));
        return CK_INVALID_HANDLE;
    }

    if (ulCount == 0)
    {
        qDebug (" \nNinguna clave privada encontrada!\n");
        // cerrar la sesion
        /*rv = C_CloseAllSessions(slotID);
        qDebug("C_CloseAllSessions rv = %x", rv);
        qDebug ("\n");
        assert(rv==CKR_OK);*/
        return CK_INVALID_HANDLE;
        }
    else
    {
        //qDebug (" \nObjeto encontrado (object=0x%04X)\n", hObject);
        qDebug (" \nClave privada encontrada:  (clave = 0x%4X)\n", hObject);
        return hObject;
    }
}

CK_OBJECT_HANDLE CryptoToken::getPrivateKey(CK_SESSION_HANDLE hSession, CK_SLOT_ID slotID, int certificateIndex)
{
    QString error("");

    CK_RV rv;
    CK_OBJECT_HANDLE hObject = CK_INVALID_HANDLE;
    CK_OBJECT_CLASS objClass = CKO_PRIVATE_KEY;
    CK_ULONG ulCount = 2;

    std::vector<CK_OBJECT_HANDLE> objectHandle(ulCount);

    //CK_BYTE keyid[strlen(id)+1];
    //strcpy((char *)keyid,id);
    //int idLen = strlen(qPrintable(id))+1;

    //CK_UTF8CHAR label[idLen];

    //strcpy((char *) label, qPrintable(id));
    //qDebug("SmartCard::getPrivateKey label:");
    //qDebug((char *) label);

    //qDebug("VALOR DE keyid");
    //qDebug((char *)keyid);

    CK_ATTRIBUTE privateKeyTemplate[] = {
        { CKA_CLASS, &objClass, sizeof (objClass) },
        //{ CKA_LABEL, label, sizeof(label)-1 }
        //{CKA_ID, keyid, sizeof (keyid)}
    };

    CK_ULONG ulTemplateCount = sizeof (privateKeyTemplate) / sizeof (privateKeyTemplate[0]);

    /* Pre-condition checks. */
    assert (hSession != NULL_PTR);

    // comienza la busqueda de clave privada
    qDebug ("Inicia busqueda de clave privada ... \n");

    rv = C_FindObjectsInit(hSession, privateKeyTemplate, ulTemplateCount);
    qDebug ("C_FindObjectsInit rv = %x",rv);
    qDebug ("\n");
    //assert(rv==CKR_OK);
    if (rv != CKR_OK)
    {
        error = returnErrorToQString(rv);
        qDebug(qPrintable("C_FindObjectsInit: "+error));
        return CK_INVALID_HANDLE;

    }


    // se realiza la busqueda
    //rv = C_FindObjects(hSession, &hObject, 3, &ulCount);
    rv = C_FindObjects(hSession, objectHandle.data(), objectHandle.size(), &ulCount);
    qDebug ("C_FindObjects rv = %x",rv);
    qDebug ("\n");
    //assert(rv==CKR_OK);

    qDebug("*-*-*-*-*getPrivateKey VALOR DE ulCount %u: ", ulCount);
    //if (rv != CKR_OK)
    if ((rv != CKR_OK) )//|| (ulCount == 0))
    {
        if (ulCount == 0)
            qDebug("ulCount == 0");

        error = returnErrorToQString(rv);
        qDebug(qPrintable("C_FindObjects: "+error));
        return CK_INVALID_HANDLE;

    }

    rv = C_FindObjectsFinal(hSession);
    qDebug ("C_FindObjectsFinal rv = %x",rv);
    qDebug ("\n");
    //assert(rv==CKR_OK);
    if (rv != CKR_OK)
    {
        error = returnErrorToQString(rv);
        qDebug(qPrintable("C_FindObjectsFinal: "+error));
        return CK_INVALID_HANDLE;
    }

    if (ulCount == 0)
    {
        qDebug (" \nNinguna clave privada encontrada!\n");
        // cerrar la sesion
        /*rv = C_CloseAllSessions(slotID);
        qDebug("C_CloseAllSessions rv = %x", rv);
        qDebug ("\n");
        assert(rv==CKR_OK);*/
        return CK_INVALID_HANDLE;
        }
    else
    {
        //qDebug (" \nObjeto encontrado (object=0x%04X)\n", hObject);
        //qDebug (" \nClave privada encontrada:  (clave = 0x%4X)\n", hObject);
        //return hObject;

        objectHandle.resize(ulCount);
        qDebug (" \nClave privada encontrada:  (clave = 0x%4X)\n", objectHandle[certificateIndex]);
        return objectHandle[certificateIndex];
    }
}



bool CryptoToken::signSomeData(CK_SESSION_HANDLE hSession, CK_OBJECT_HANDLE privateKey, CK_BYTE_PTR someData,
        CK_ULONG someDataLen, CK_BYTE_PTR sign, CK_ULONG_PTR signLen )
{
    CK_RV rv;
    qDebug (" \nProceso de firma digital de datos con la clave privada que mantiene la tarjeta...\n");
    qDebug("valor de sign antes de firmar: \n %s\n", sign);

    //CK_ULONG someDataLen, slen;
    //someDataLen = strlen((char *) someData);

    //CK_ULONG slen;
    //slen = BUFFERSIZ;
    //slen = signLen;

    // definicion del algoritmo de firma
    CK_MECHANISM signMechanism = { CKM_RSA_PKCS /*CKM_SHA1_RSA_PKCS*/, 0 /*NULL_PTR*/, 0};

    rv = C_SignInit(hSession, &signMechanism, privateKey);

    if (rv != CKR_OK) {
        qDebug("C_SignInit: rv = 0x%.8X\n", rv);
        rv = C_CloseSession(hSession);
        qDebug ("C_CloseSession: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        rv = C_Finalize(NULL_PTR);
        qDebug ("C_Finalize: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        return false;
    }

    qDebug("C_SignInit: rv = 0x%.8X\n", rv);
    qDebug ("\n");
    assert(rv==CKR_OK);

    rv = C_Sign(hSession, someData, someDataLen, sign, signLen);

    if (rv != CKR_OK) {
        qDebug("C_Sign: rv = 0x%.8X\n", rv);
        rv = C_CloseSession(hSession);
        qDebug ("C_CloseSession: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        rv = C_Finalize(NULL_PTR);
        qDebug ("C_Finalize: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        return false;//1;
    }

    qDebug("Valor de la firma sign: \n%s\n", sign);
    qDebug("\nValor de signLen: \n%u\n", *signLen);

    qDebug("C_Sign: rv = 0x%.8X\n", rv);
    qDebug ("\n");
    assert(rv==CKR_OK);


    qDebug("\nMessage was successfully signed with private key!\n");
    return true;

}


std::vector<unsigned char> CryptoToken::signHash(QString hashToSign, QString pin, QString label)
{

    std::vector<unsigned char> hash = fromHex(hashToSign);

    QString error("");
    CK_RV rv;

    CK_SESSION_HANDLE hSession = CK_INVALID_HANDLE;
    CK_SLOT_ID slotID;

    // initialize criptoki
    rv = C_Initialize(NULL_PTR);
    if (rv != CKR_OK)
    {
        if (rv == CKR_DEVICE_ERROR)
        {
            error = returnErrorToQString(rv);
            qDebug(qPrintable(error));
            throw std::runtime_error(qPrintable(error));
        }
        error = returnErrorToQString(rv);
        qDebug(qPrintable(error));
        throw std::runtime_error(qPrintable(error));
    }

    hSession = openSession((char *) qPrintable(pin), slotID);
    if (hSession == CK_INVALID_HANDLE)
    {
        qDebug("Fallo ptr_SC->openSession");
        rv = C_Finalize(NULL_PTR);
        qDebug("C_Finalize: rv = %x",rv);
        assert(rv == CKR_OK);
        throw std::runtime_error("Error openning a session");
    }

    // obtencion de la clave privada para firmar los datos
    CK_OBJECT_HANDLE privateKey = CK_INVALID_HANDLE;

    //QString label = "New Key aaraujo";
    privateKey = getPrivateKey(hSession, slotID, label);

    // https://github.com/open-eid/chrome-token-signing/blob/master/host-shared/PKCS11CardManager.h

    if (privateKey == CK_INVALID_HANDLE)
    {
        qDebug("Fallo ptr_SC->getPrivateKey");
        rv = C_CloseSession(hSession);
        qDebug("C_CloseSession: rv = %x",rv);
        assert(rv == CKR_OK);
        rv = C_Finalize(NULL_PTR);
        qDebug("C_Finalize: rv = %x",rv);
        assert(rv == CKR_OK);
        throw std::runtime_error("Error finding private key");
    }

    CK_MECHANISM mechanism = {CKM_RSA_PKCS, 0, 0};


    rv = C_SignInit(hSession, &mechanism, privateKey);

    if (rv != CKR_OK) {
        qDebug("C_SignInit: rv = 0x%.8X\n", rv);
        rv = C_CloseSession(hSession);
        qDebug ("C_CloseSession: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        rv = C_Finalize(NULL_PTR);
        qDebug ("C_Finalize: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        throw std::runtime_error("Error C_SignInit");
    }

    qDebug("C_SignInit: rv = 0x%.8X\n", rv);
    qDebug ("\n");
    assert(rv==CKR_OK);

    std::vector<unsigned char> hashWithPadding;
    switch (hash.size()) {
        case BINARY_SHA1_LENGTH:
            hashWithPadding = {0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03, 0x02, 0x1a, 0x05, 0x00, 0x04, 0x14};
            break;
        case BINARY_SHA224_LENGTH:
            hashWithPadding = {0x30, 0x2d, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x04, 0x05, 0x00, 0x04, 0x1c};
            break;
        case BINARY_SHA256_LENGTH:
            hashWithPadding = {0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x20};
            break;
        case BINARY_SHA384_LENGTH:
            hashWithPadding = {0x30, 0x41, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02, 0x05, 0x00, 0x04, 0x30};
            break;
        case BINARY_SHA512_LENGTH:
            hashWithPadding = {0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03, 0x05, 0x00, 0x04, 0x40};
            break;
        default:
            throw std::runtime_error("incorrect digest length, dropping padding");
    }
    hashWithPadding.insert(hashWithPadding.end(), hash.begin(), hash.end());

    CK_ULONG signatureLength = 0;


    rv = C_Sign(hSession, hashWithPadding.data(), hashWithPadding.size(), nullptr, &signatureLength);

    if (rv != CKR_OK) {
        qDebug("C_Sign: rv = 0x%.8X\n", rv);
        rv = C_CloseSession(hSession);
        qDebug ("C_CloseSession: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        rv = C_Finalize(NULL_PTR);
        qDebug ("C_Finalize: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        throw std::runtime_error("Error C_Sign1");
    }

    std::vector<unsigned char> signature(signatureLength, 0);

    rv = C_Sign(hSession, hashWithPadding.data(), hashWithPadding.size(), signature.data(), &signatureLength);

    if (rv != CKR_OK) {
        qDebug("C_Sign: rv = 0x%.8X\n", rv);
        rv = C_CloseSession(hSession);
        qDebug ("C_CloseSession: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        rv = C_Finalize(NULL_PTR);
        qDebug ("C_Finalize: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        throw std::runtime_error("Error C_Sign2");
    }


    qDebug("C_Sign: rv = 0x%.8X\n", rv);
    qDebug ("\n");
    assert(rv==CKR_OK);

    closeSession(hSession);
    finalize();

    return signature;

}

std::vector<unsigned char> CryptoToken::signHash(QString hashToSign, QString pin, int certificateIndex)
{

    std::vector<unsigned char> hash = fromHex(hashToSign);

    QString error("");
    CK_RV rv;

    CK_SESSION_HANDLE hSession = CK_INVALID_HANDLE;
    CK_SLOT_ID slotID;

    // initialize criptoki
    rv = C_Initialize(NULL_PTR);
    if (rv != CKR_OK)
    {
        if (rv == CKR_DEVICE_ERROR)
        {
            error = returnErrorToQString(rv);
            qDebug(qPrintable(error));
            throw std::runtime_error(qPrintable(error));
        }
        error = returnErrorToQString(rv);
        qDebug(qPrintable(error));
        throw std::runtime_error(qPrintable(error));
    }

    hSession = openSession((char *) qPrintable(pin), slotID);
    if (hSession == CK_INVALID_HANDLE)
    {
        qDebug("Fallo ptr_SC->openSession");
        rv = C_Finalize(NULL_PTR);
        qDebug("C_Finalize: rv = %x",rv);
        assert(rv == CKR_OK);
        throw std::runtime_error("Error openning a session");
    }

    // obtencion de la clave privada para firmar los datos
    CK_OBJECT_HANDLE privateKey = CK_INVALID_HANDLE;

    //QString label = "New Key aaraujo";
    privateKey = getPrivateKey(hSession, slotID, certificateIndex);

    // https://github.com/open-eid/chrome-token-signing/blob/master/host-shared/PKCS11CardManager.h

    if (privateKey == CK_INVALID_HANDLE)
    {
        qDebug("Fallo ptr_SC->getPrivateKey");
        rv = C_CloseSession(hSession);
        qDebug("C_CloseSession: rv = %x",rv);
        assert(rv == CKR_OK);
        rv = C_Finalize(NULL_PTR);
        qDebug("C_Finalize: rv = %x",rv);
        assert(rv == CKR_OK);
        throw std::runtime_error("Error finding private key");
    }

    CK_MECHANISM mechanism = {CKM_RSA_PKCS, 0, 0};


    rv = C_SignInit(hSession, &mechanism, privateKey);

    if (rv != CKR_OK) {
        qDebug("C_SignInit: rv = 0x%.8X\n", rv);
        rv = C_CloseSession(hSession);
        qDebug ("C_CloseSession: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        rv = C_Finalize(NULL_PTR);
        qDebug ("C_Finalize: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        throw std::runtime_error("Error C_SignInit");
    }

    qDebug("C_SignInit: rv = 0x%.8X\n", rv);
    qDebug ("\n");
    assert(rv==CKR_OK);

    std::vector<unsigned char> hashWithPadding;
    switch (hash.size()) {
        case BINARY_SHA1_LENGTH:
            hashWithPadding = {0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03, 0x02, 0x1a, 0x05, 0x00, 0x04, 0x14};
            break;
        case BINARY_SHA224_LENGTH:
            hashWithPadding = {0x30, 0x2d, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x04, 0x05, 0x00, 0x04, 0x1c};
            break;
        case BINARY_SHA256_LENGTH:
            hashWithPadding = {0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x20};
            break;
        case BINARY_SHA384_LENGTH:
            hashWithPadding = {0x30, 0x41, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02, 0x05, 0x00, 0x04, 0x30};
            break;
        case BINARY_SHA512_LENGTH:
            hashWithPadding = {0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03, 0x05, 0x00, 0x04, 0x40};
            break;
        default:
            throw std::runtime_error("incorrect digest length, dropping padding");
    }
    hashWithPadding.insert(hashWithPadding.end(), hash.begin(), hash.end());

    CK_ULONG signatureLength = 0;


    rv = C_Sign(hSession, hashWithPadding.data(), hashWithPadding.size(), nullptr, &signatureLength);

    if (rv != CKR_OK) {
        qDebug("C_Sign: rv = 0x%.8X\n", rv);
        rv = C_CloseSession(hSession);
        qDebug ("C_CloseSession: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        rv = C_Finalize(NULL_PTR);
        qDebug ("C_Finalize: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        throw std::runtime_error("Error C_Sign1");
    }

    std::vector<unsigned char> signature(signatureLength, 0);

    rv = C_Sign(hSession, hashWithPadding.data(), hashWithPadding.size(), signature.data(), &signatureLength);

    if (rv != CKR_OK) {
        qDebug("C_Sign: rv = 0x%.8X\n", rv);
        rv = C_CloseSession(hSession);
        qDebug ("C_CloseSession: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        rv = C_Finalize(NULL_PTR);
        qDebug ("C_Finalize: rv = %x",rv);
        qDebug ("\n");
        assert(rv == CKR_OK);
        throw std::runtime_error("Error C_Sign2");
    }


    qDebug("C_Sign: rv = 0x%.8X\n", rv);
    qDebug ("\n");
    assert(rv==CKR_OK);

    closeSession(hSession);
    finalize();

    return signature;

}


/*
std::vector<CK_OBJECT_HANDLE> CryptoToken::findObject(CK_OBJECT_CLASS objectClass, CK_ULONG max = 2) const {
    if (!fl) {
        throw std::runtime_error("PKCS11 is not loaded");
    }
    CK_ATTRIBUTE searchAttribute = {CKA_CLASS, &objectClass, sizeof(objectClass)};



    C(FindObjectsInit, session, &searchAttribute, 1);
    CK_ULONG objectCount = max;
    std::vector<CK_OBJECT_HANDLE> objectHandle(objectCount);
    C(FindObjects, session, objectHandle.data(), objectHandle.size(), &objectCount);
    C(FindObjectsFinal, session);
    objectHandle.resize(objectCount);
    return objectHandle;
}
*/

QStringList CryptoToken::getPrivateKeyLabels(QString pin)
{
    qDebug("...CryptoToken::getPrivateKeyLabels");
    QStringList list;

    QString error("");
    CK_RV rv;

    CK_SESSION_HANDLE hSession = CK_INVALID_HANDLE;
    CK_SLOT_ID slotID;

    // initialize criptoki
    rv = C_Initialize(NULL_PTR);
    if (rv != CKR_OK)
    {
        if (rv == CKR_DEVICE_ERROR)
        {
            error = returnErrorToQString(rv);
            qDebug(qPrintable(error));
            throw std::runtime_error(qPrintable(error));
        }
        error = returnErrorToQString(rv);
        qDebug(qPrintable(error));
        throw std::runtime_error(qPrintable(error));
    }

    hSession = openSession((char *) qPrintable(pin), slotID, false);
    if (hSession == CK_INVALID_HANDLE)
    {
        qDebug("Fallo ptr_SC->openSession");
        rv = C_Finalize(NULL_PTR);
        qDebug("C_Finalize: rv = %x",rv);
        assert(rv == CKR_OK);
        throw std::runtime_error("Error openning a session");
    }

    CK_OBJECT_CLASS objectClass = CKO_PRIVATE_KEY;
    //CK_OBJECT_CLASS objectClass = CKO_PUBLIC_KEY;
    //CK_OBJECT_CLASS objectClass = CKO_CERTIFICATE;

    CK_OBJECT_HANDLE hObject = CK_INVALID_HANDLE;
    CK_ATTRIBUTE searchAttribute = {CKA_CLASS, &objectClass, sizeof(objectClass)};
    CK_ULONG ulCount = 0;

    rv = C_FindObjectsInit(hSession, &searchAttribute, 1);
    qDebug ("C_FindObjectsInit rv = %x",rv);
    qDebug ("\n");
    //assert(rv==CKR_OK);
    if (rv != CKR_OK)
    {
        error = returnErrorToQString(rv);
        qDebug("%s", qPrintable("C_FindObjectsInit: "+error));
        //return list;
        throw std::runtime_error(qPrintable(error));
    }

    CK_ULONG objectCount = 3;
    std::vector<CK_OBJECT_HANDLE> objectHandle(objectCount);

    // se realiza la busqueda
    //rv = C_FindObjects(hSession, &hObject, 2, &ulCount);
    rv = C_FindObjects(hSession, objectHandle.data(), objectHandle.size(), &objectCount);

    qDebug ("C_FindObjects rv = %x",rv);
    qDebug ("\n");
    //assert(rv==CKR_OK);

    qDebug("*-*-*-*-*getPrivateKeyLabels VALOR DE objectCount %u: ", objectCount);
    //if (rv != CKR_OK)
    if ((rv != CKR_OK) )//|| (ulCount == 0))
    {
        if (ulCount == 0)
            qDebug("ulCount == 0");

        error = returnErrorToQString(rv);
        qDebug(qPrintable("C_FindObjects: "+error));
        //return list;
        throw std::runtime_error(qPrintable(error));
    }

    rv = C_FindObjectsFinal(hSession);
    qDebug ("C_FindObjectsFinal rv = %x",rv);
    qDebug ("\n");
    //assert(rv==CKR_OK);
    if (rv != CKR_OK)
    {
        error = returnErrorToQString(rv);
        qDebug(qPrintable("C_FindObjectsFinal: "+error));
        //return list;
        throw std::runtime_error(qPrintable(error));
    }
    objectHandle.resize(objectCount);

    //if (ulCount == 0)
    if (objectHandle.size() == 0)
    {
        qDebug (" \nNingun objeto encontrado!\n");
        // cerrar la sesion
        /*rv = C_CloseAllSessions(slotID);
        qDebug("C_CloseAllSessions rv = %x", rv);
        qDebug ("\n");
        assert(rv==CKR_OK);*/
        //return list;
        throw std::runtime_error(qPrintable(error));
        }
    else
    {
        //qDebug (" \nObjeto encontrado (object=0x%04X)\n", hObject);
        qDebug("se econtraron %d objetos", objectHandle.size());
        //qDebug (" \nClave privada encontrada:  (clave = 0x%4X)\n", hObject);
        for (int i=0; i< objectHandle.size(); i++)
        {
            qDebug("objeto encontrado: 0x%4X", objectHandle[i]);
            list.append(getKeyLabel(hSession, objectHandle[i]));
        }
    }

    closeSession(hSession);
    finalize();

    return list;
}

QStringList CryptoToken::getLabel()
{
    qDebug("...CryptoToken::getLabel");
    QStringList list;

    QString error("");
    CK_RV rv;

    CK_SESSION_HANDLE hSession = CK_INVALID_HANDLE;
    CK_SLOT_ID slotID;

    // initialize criptoki
    rv = C_Initialize(NULL_PTR);
    if (rv != CKR_OK)
    {
        if (rv == CKR_DEVICE_ERROR)
        {
            error = returnErrorToQString(rv);
            qDebug(qPrintable(error));
            throw std::runtime_error(qPrintable(error));
        }
        error = returnErrorToQString(rv);
        qDebug(qPrintable(error));
        throw std::runtime_error(qPrintable(error));
    }

    hSession = openSession((char *) qPrintable(/*pin*/ ""), slotID, false);
    if (hSession == CK_INVALID_HANDLE)
    {
        qDebug("Fallo ptr_SC->openSession");
        rv = C_Finalize(NULL_PTR);
        qDebug("C_Finalize: rv = %x",rv);
        assert(rv == CKR_OK);
        throw std::runtime_error("Error openning a session");
    }

    //CK_OBJECT_CLASS objectClass = CKO_PRIVATE_KEY;
    CK_OBJECT_CLASS objectClass = CKO_PUBLIC_KEY;
    //CK_OBJECT_CLASS objectClass = CKO_CERTIFICATE;

    CK_OBJECT_HANDLE hObject = CK_INVALID_HANDLE;
    CK_ATTRIBUTE searchAttribute = {CKA_CLASS, &objectClass, sizeof(objectClass)};
    CK_ULONG ulCount = 0;

    rv = C_FindObjectsInit(hSession, &searchAttribute, 1);
    qDebug ("C_FindObjectsInit rv = %x",rv);
    qDebug ("\n");
    //assert(rv==CKR_OK);
    if (rv != CKR_OK)
    {
        error = returnErrorToQString(rv);
        qDebug("%s", qPrintable("C_FindObjectsInit: "+error));
        //return list;
        throw std::runtime_error(qPrintable(error));
    }

    CK_ULONG objectCount = 3;
    std::vector<CK_OBJECT_HANDLE> objectHandle(objectCount);

    // se realiza la busqueda
    //rv = C_FindObjects(hSession, &hObject, 2, &ulCount);
    rv = C_FindObjects(hSession, objectHandle.data(), objectHandle.size(), &objectCount);

    qDebug ("C_FindObjects rv = %x",rv);
    qDebug ("\n");
    //assert(rv==CKR_OK);

    qDebug("*-*-*-*-*getPrivateKeyLabels VALOR DE objectCount %u: ", objectCount);
    //if (rv != CKR_OK)
    if ((rv != CKR_OK) )//|| (ulCount == 0))
    {
        if (ulCount == 0)
            qDebug("ulCount == 0");

        error = returnErrorToQString(rv);
        qDebug(qPrintable("C_FindObjects: "+error));
        //return list;
        throw std::runtime_error(qPrintable(error));
    }

    rv = C_FindObjectsFinal(hSession);
    qDebug ("C_FindObjectsFinal rv = %x",rv);
    qDebug ("\n");
    //assert(rv==CKR_OK);
    if (rv != CKR_OK)
    {
        error = returnErrorToQString(rv);
        qDebug(qPrintable("C_FindObjectsFinal: "+error));
        //return list;
        throw std::runtime_error(qPrintable(error));
    }
    objectHandle.resize(objectCount);

    //if (ulCount == 0)
    if (objectHandle.size() == 0)
    {
        qDebug (" \nNingun objeto encontrado!\n");
        // cerrar la sesion
        /*rv = C_CloseAllSessions(slotID);
        qDebug("C_CloseAllSessions rv = %x", rv);
        qDebug ("\n");
        assert(rv==CKR_OK);*/
        //return list;
        throw std::runtime_error(qPrintable(error));
        }
    else
    {
        //qDebug (" \nObjeto encontrado (object=0x%04X)\n", hObject);
        qDebug("se econtraron %d objetos", objectHandle.size());
        //qDebug (" \nClave privada encontrada:  (clave = 0x%4X)\n", hObject);
        for (int i=0; i< objectHandle.size(); i++)
        {
            qDebug("objeto encontrado: 0x%4X", objectHandle[i]);
            list.append(getKeyLabel(hSession, objectHandle[i]));
            qDebug("label: %s", qPrintable(getKeyLabel(hSession, objectHandle[i])));
        }
    }

    closeSession(hSession);
    finalize();

    return list;




}


QString CryptoToken::getKeyLabel(CK_SESSION_HANDLE hSession, CK_OBJECT_HANDLE key)
{
    qDebug("CryptoToken::getKeyLabel");

    CK_RV rv = CKR_OK;
    CK_ATTRIBUTE keyid_attr[1] = {
        { CKA_LABEL, NULL, 0 }
        //{ CKA_VALUE, NULL, 0 }
    };

    if ((rv = C_GetAttributeValue(hSession, key, keyid_attr, 1)) != CKR_OK)
    {
        //QMessageBox::critical(this,tr("UserAccess"),tr("fallo la obtencion del atributo ID"));
        qDebug("fallo la obtencion del atributo ID");
        return "";
    }

    if ((keyid_attr[0].pValue = malloc(keyid_attr[0].ulValueLen)) == NULL)
    {
        //QMessageBox::critical(this,tr("UserAccess"),tr("fallo la asignacion de memoria del atributo ID"));
        qDebug("fallo la asignacion de memoria del atributo ID");
        return "";
    }
    if ((rv = C_GetAttributeValue(hSession, key, keyid_attr, 1)) != CKR_OK)
    {
        //QMessageBox::critical(this,tr("UserAccess"),tr("fallo la obtencion 2 del atributo ID"));
        qDebug("fallo la obtencion 2 del atributo ID");
        return "";
    }

    //qDebug("\n*-** VALOR DE ID: %s\n", keyid_attr[0].pValue);
    qDebug("\n*-** VALOR DE atributo: %s\n", keyid_attr[0].pValue);
    QString label = (const char *) keyid_attr[0].pValue;

    qDebug(qPrintable(label));
    qDebug(qPrintable(QString::number(label.size())));

    return label;
}


QList<QStringList> CryptoToken::getCertificateCNandExpirationDate()
{
    qDebug("...CryptoToken::getCertificateCNandExpirationDate");
    QList<QStringList> list;

    QString error("");
    CK_RV rv;

    CK_SESSION_HANDLE hSession = CK_INVALID_HANDLE;
    CK_SLOT_ID slotID;

    // initialize criptoki
    rv = C_Initialize(NULL_PTR);
    if (rv != CKR_OK)
    {
        if (rv == CKR_DEVICE_ERROR)
        {
            qDebug("CKR_DEVICE_ERROR");
            error = returnErrorToQString(rv);
            qDebug(qPrintable(error));
            throw std::runtime_error(qPrintable(error));
        }
        qDebug("****");
        error = returnErrorToQString(rv);
        qDebug(qPrintable(error));
        throw std::runtime_error(qPrintable(error));
    }

    //hSession = openSession((char *) qPrintable(pin), slotID);
    hSession = openSession((char *) qPrintable(""), slotID, false);
    if (hSession == CK_INVALID_HANDLE)
    {
        qDebug("Fallo ptr_SC->openSession");
        rv = C_Finalize(NULL_PTR);
        qDebug("C_Finalize: rv = %x",rv);
        assert(rv == CKR_OK);
        throw std::runtime_error("Error openning a session inside the device");
    }

    CK_OBJECT_CLASS objectClass = CKO_CERTIFICATE;

    CK_OBJECT_HANDLE hObject = CK_INVALID_HANDLE;
    CK_ATTRIBUTE searchAttribute = {CKA_CLASS, &objectClass, sizeof(objectClass)};
    CK_ULONG ulCount = 0;

    rv = C_FindObjectsInit(hSession, &searchAttribute, 1);
    qDebug ("C_FindObjectsInit rv = %x",rv);
    qDebug ("\n");
    //assert(rv==CKR_OK);
    if (rv != CKR_OK)
    {
        error = returnErrorToQString(rv);
        qDebug("%s", qPrintable("C_FindObjectsInit: "+error));
        //return list;
        throw std::runtime_error(qPrintable(error));
    }

    CK_ULONG objectCount = 3;
    std::vector<CK_OBJECT_HANDLE> objectHandle(objectCount);

    // se realiza la busqueda
    //rv = C_FindObjects(hSession, &hObject, 2, &ulCount);
    rv = C_FindObjects(hSession, objectHandle.data(), objectHandle.size(), &objectCount);

    qDebug ("C_FindObjects rv = %x",rv);
    qDebug ("\n");
    //assert(rv==CKR_OK);

    qDebug("*-*-*-*-*getPrivateKeyLabels VALOR DE objectCount %u: ", objectCount);
    //if (rv != CKR_OK)
    if ((rv != CKR_OK) )//|| (ulCount == 0))
    {
        if (ulCount == 0)
            qDebug("ulCount == 0");

        error = returnErrorToQString(rv);
        qDebug(qPrintable("C_FindObjects: "+error));
        //return list;
        throw std::runtime_error(qPrintable(error));
    }

    rv = C_FindObjectsFinal(hSession);
    qDebug ("C_FindObjectsFinal rv = %x",rv);
    qDebug ("\n");
    //assert(rv==CKR_OK);
    if (rv != CKR_OK)
    {
        error = returnErrorToQString(rv);
        qDebug(qPrintable("C_FindObjectsFinal: "+error));
        //return list;
        throw std::runtime_error(qPrintable(error));
    }
    objectHandle.resize(objectCount);

    //if (ulCount == 0)
    if (objectHandle.size() == 0)
    {
        qDebug (" \nNingun objeto encontrado!\n");
        // cerrar la sesion
        /*rv = C_CloseAllSessions(slotID);
        qDebug("C_CloseAllSessions rv = %x", rv);
        qDebug ("\n");
        assert(rv==CKR_OK);*/
        //return list;
        throw std::runtime_error(qPrintable(error));
        }
    else
    {
        //qDebug (" \nObjeto encontrado (object=0x%04X)\n", hObject);
        qDebug("se econtraron %d objetos", objectHandle.size());
        //qDebug (" \nClave privada encontrada:  (clave = 0x%4X)\n", hObject);

        for (int i=0; i< objectHandle.size(); i++)
        {
            QStringList certInformation;
            qDebug("objeto encontrado: 0x%4X", objectHandle[i]);
            certInformation = getCertificateInformation(hSession, objectHandle[i]);
            //list.append(getCertificateInformation(hSession, objectHandle[i])[0]);
            //list.append(getCertificateInformation(hSession, objectHandle[i])[0]);
            list.append(certInformation);
        }
    }

    closeSession(hSession);
    finalize();

    return list;
}

QStringList CryptoToken::getCertificateInformation(CK_SESSION_HANDLE hSession, CK_OBJECT_HANDLE certificate)
{
    qDebug("...getCertificateInformation...");

    CK_RV rv = CKR_OK;
    CK_ATTRIBUTE keyid_attr[2] = {
        { CKA_LABEL, NULL, 0 },
        { CKA_VALUE, NULL, 0 }
    };

    QStringList list;


    if ((rv = C_GetAttributeValue(hSession, certificate, keyid_attr, 2)) != CKR_OK)
    {
        //QMessageBox::critical(this,tr("UserAccess"),tr("fallo la obtencion del atributo ID"));
        qDebug("fallo la obtencion del atributo ID");
        return list;
    }

    if ((keyid_attr[1].pValue = malloc(keyid_attr[1].ulValueLen)) == NULL)
    {
        //QMessageBox::critical(this,tr("UserAccess"),tr("fallo la asignacion de memoria del atributo ID"));
        qDebug("fallo la asignacion de memoria del atributo ID");
        return list;
    }
    if ((rv = C_GetAttributeValue(hSession, certificate, keyid_attr, 2)) != CKR_OK)
    {
        //QMessageBox::critical(this,tr("UserAccess"),tr("fallo la obtencion 2 del atributo ID"));
        qDebug("fallo la obtencion 2 del atributo ID");
        return list;
    }

    //qDebug("\n*-** VALOR DE ID: %s\n", keyid_attr[0].pValue);
    //qDebug("\n*-** VALOR DE atributo: %s\n", keyid_attr[0].pValue);
    //QString x = (const char *) keyid_attr[1].pValue;

    //qDebug(qPrintable(x));
    //qDebug(qPrintable(QString::number(x.size())));


    //qDebug("prueba de generar un QSslCertificate");

    QSslCertificate qcert(QByteArray((const char *) keyid_attr[1].pValue, (int) keyid_attr[1].ulValueLen), QSsl::Der);

    if (qcert.isNull()){
        qDebug("qcert es null");
    }

    qDebug("mira el contenido qcert");

    /*
    QStringList list = qcert.subjectInfo(QSslCertificate::EmailAddress);
    QStringList l2 = qcert.subjectInfo(QSslCertificate::DistinguishedNameQualifier);
    QStringList l3 = qcert.subjectInfo( QSslCertificate::CommonName );
    QStringList l4 = qcert.subjectInfo( QSslCertificate::Organization );
    QStringList l5 = qcert.subjectInfo( QSslCertificate::LocalityName );
    QStringList l6 = qcert.subjectInfo( QSslCertificate::OrganizationalUnitName );
    QStringList l7 = qcert.subjectInfo( QSslCertificate::StateOrProvinceName );
    */
    list.append(qcert.subjectInfo( QSslCertificate::CommonName ));
    list.append(qcert.subjectInfo( QSslCertificate::Organization ));
    list.append(qcert.expiryDate().date().toString("dd.MM.yyyy"));

    qDebug("***CERT HEX");
    qDebug(qcert.toDer().toHex());
    list.append(qcert.toDer().toHex());
    qDebug("************");

    //qDebug(qPrintable(qcert.effectiveDate().date().toString("dd.MM.yyyy")));
    //qDebug(qPrintable(qcert.expiryDate().date().toString("dd.MM.yyyy")));

    return list;
}


QList<QStringList> CryptoToken::getDeviceCertificates()
{
    qDebug("...getDeviceCertificates");


    //QStringList labelList = getPrivateKeyLabels(pin);

    QList<QStringList> nameExpirationList = getCertificateCNandExpirationDate();

    QList<QStringList> certificateInformationList;

    for (int i=0; i<nameExpirationList.size()/*labelList.size()*/; i++)
    {
        QStringList l;
        //qDebug("... antes de insertar label");
        //l.append(labelList[i]);
        //qDebug("... antes de insertar commonName");
        l.append(nameExpirationList[i][0]);
        //qDebug("... antes de insertar organizationName");
        l.append(nameExpirationList[i][1]);
        //qDebug("... antes de insertar expirationDate");
        l.append(nameExpirationList[i][2]);

        //qDebug("... antes de insertar en certificateInformationList");
        certificateInformationList.append(l);
    }

    return certificateInformationList;
}


void CryptoToken::getCertificateAttributes(CK_SESSION_HANDLE hSession, CK_OBJECT_HANDLE hCert)
{
   CK_ATTRIBUTE pTemplate[2] = {
       //List your desired attributes here
       { CKA_LABEL, NULL, 0 }
       //{ CKA_LABEL, NULL, 0 }
   };

   CK_RV rv = C_GetAttributeValue(hSession, hCert, pTemplate, /*pTemplateLen*/ 2);
   if (rv == CKR_OK) {
       //here you have your desired certificate attributes
       qDebug("chequea los atributos");

   }
}











// slot para obtener informacion del modulo PKCS11
QString CryptoToken::getInfoCryptoki()
{
    // Generales
    //if ( !CHECKACCESS_ONE("smartcard information", "execute") ) return;
    CK_INFO info;

    /* Valor devuelto por las funciones */
    CK_RV rv;

    QString error("");
    QString mensaje;
    mensaje.clear();

    rv = C_Initialize(NULL_PTR);

    //fqDebug(stderr, "C_Initialize: rv = 0x%.8X\n", rv);
    //cout << "valor decimal de rv: " << rv ;

    //assert(rv == CKR_OK);
    //mensaje->append("C_Initialize\n");
    if (rv != CKR_OK)
    {

        if (rv == CKR_DEVICE_ERROR)
        {
            error = returnErrorToQString(rv);
            qDebug("Probablemente el lector no este conectado");
            return error;
        }
        error = returnErrorToQString(rv);
        qDebug("valor de x despues de returnError: %s", qPrintable(error));
        return error;
    }


    rv = C_GetInfo(&info);
    //fqDebug(stderr, "C_GetInfo: rv = 0x%.8X\n", rv);
    //cout << "valor decimal de rv: " << rv ;

    if (rv != CKR_OK)
    {
        error = returnErrorToQString(rv);
        return error;
    }
    //assert(rv == CKR_OK);

    QString y("Descripcion: ");
    y.append((const char *) info.libraryDescription);
    mensaje.append(y);

    QString x("Fabricante: ");
    x.append((const char *) info.manufacturerID);
    mensaje.append(x);

    QString cryptokiVersion("Version: ");
    cryptokiVersion.append(QString::number(info.cryptokiVersion.major));
    cryptokiVersion.append(".");
    cryptokiVersion.append(QString::number(info.cryptokiVersion.minor));
    qDebug(qPrintable(cryptokiVersion));
    mensaje.append(cryptokiVersion);

    rv = C_Finalize(NULL_PTR);
    if (rv != CKR_OK)
    {
        error = returnErrorToQString(rv);
        return error;
    }
    assert(rv == CKR_OK);
    //mensaje->append("C_Finalize\n");

    //qDebug("***********************mensaje:");
    //qDebug(qPrintable(mensaje));
    return mensaje;
}




QString CryptoToken::returnErrorToQString(CK_RV rv)
{
    QString x("");
    qDebug("returnErrorToQString");
    //qDebug("valor de x: ", x);
    //qDebug("valor de rv: "+ QString::number(rv,16));

    /* CK_RV is a value that identifies the return value of a
    * Cryptoki function */
    /* CK_RV was changed from CK_USHORT to CK_ULONG for v2.0 */
    //typedef CK_ULONG          CK_RV;

    if (rv == CKR_OK) // CKR_OK 0x00000000
    {
        x = "CKR_OK";
    } else if (rv == CKR_CANCEL)  // CKR_CANCEL 0x00000001
    {
        x = "CKR_CANCEL";
    } else if (rv == CKR_HOST_MEMORY) //CKR_HOST_MEMORY 0x00000002
    {
        x = "CKR_HOST_MEMORY";
    } else if (rv == CKR_SLOT_ID_INVALID) //CKR_SLOT_ID_INVALID 0x00000003
    {
        x = "CKR_SLOT_ID_INVALID";
    }
    /* CKR_FLAGS_INVALID was removed for v2.0 */
    /* CKR_GENERAL_ERROR and CKR_FUNCTION_FAILED are new for v2.0 */
    else if (rv == CKR_GENERAL_ERROR)           //CKR_GENERAL_ERROR 0x00000005
    {
        x = "CKR_GENERAL_ERROR";
    } else if (rv == CKR_FUNCTION_FAILED)    //CKR_FUNCTION_FAILED 0x00000006
    {
        x = "CKR_FUNCTION_FAILED";
        return x;
    }
    /* CKR_ARGUMENTS_BAD, CKR_NO_EVENT, CKR_NEED_TO_CREATE_THREADS,
    * and CKR_CANT_LOCK are new for v2.01 */
    else if (rv == CKR_ARGUMENTS_BAD)       // CKR_ARGUMENTS_BAD 0x00000007
    {
        x = "CKR_ARGUMENTS_BAD";
    } else if (rv == CKR_NO_EVENT) //CKR_NO_EVENT                          0x00000008
    {
        x = "CKR_NO_EVENT";
    } else if (rv == CKR_NEED_TO_CREATE_THREADS) //CKR_NEED_TO_CREATE_THREADS            0x00000009
    {
        x = "CKR_NEED_TO_CREATE_THREADS";
    } else if (rv == CKR_CANT_LOCK) // CKR_CANT_LOCK                         0x0000000A
    {
        x = "CKR_CANT_LOCK";
    } else if (rv == CKR_ATTRIBUTE_READ_ONLY) // CKR_ATTRIBUTE_READ_ONLY               0x00000010
    {
        x = "CKR_ATTRIBUTE_READ_ONLY";
    } else if (rv == CKR_ATTRIBUTE_SENSITIVE) // CKR_ATTRIBUTE_SENSITIVE               0x00000011
    {
        x = "CKR_ATTRIBUTE_SENSITIVE";
    } else if (rv == CKR_ATTRIBUTE_TYPE_INVALID) // CKR_ATTRIBUTE_TYPE_INVALID            0x00000012
    {
        x = "CKR_ATTRIBUTE_TYPE_INVALID";
        return x;
    } else if (rv == CKR_ATTRIBUTE_VALUE_INVALID)// CKR_ATTRIBUTE_VALUE_INVALID           0x00000013
    {
        x = "CKR_ATTRIBUTE_VALUE_INVALID";
    } else if (rv == CKR_DATA_INVALID)//#define CKR_DATA_INVALID                      0x00000020
    {
        x = "CKR_DATA_INVALID";
    } else if (rv == CKR_DATA_LEN_RANGE) //#define CKR_DATA_LEN_RANGE                    0x00000021
    {
        x = "CKR_DATA_LEN_RANGE";
    } else if (rv == CKR_DEVICE_ERROR) //#define CKR_DEVICE_ERROR                      0x00000030
    {
        x = "CKR_DEVICE_ERROR";
        qDebug("FUCK");
    } else if (rv == CKR_DEVICE_MEMORY) //#define CKR_DEVICE_MEMORY                     0x00000031
    {
        x = "CKR_DEVICE_MEMORY";

    } else if (rv == CKR_DEVICE_REMOVED) //#define CKR_DEVICE_REMOVED                    0x00000032
    {
        x = "CKR_DEVICE_REMOVED";
    } else if (rv == CKR_ENCRYPTED_DATA_INVALID) //#define CKR_ENCRYPTED_DATA_INVALID            0x00000040
    {
        x = "CKR_ENCRYPTED_DATA_INVALID";
    } else if (rv == CKR_ENCRYPTED_DATA_LEN_RANGE) //#define CKR_ENCRYPTED_DATA_LEN_RANGE          0x00000041
    {
        x = "CKR_ENCRYPTED_DATA_LEN_RANGE";
    } else if (rv == CKR_FUNCTION_CANCELED) //#define CKR_FUNCTION_CANCELED                 0x00000050
    {
        x = "CKR_FUNCTION_CANCELED";
    } else if (rv == CKR_FUNCTION_NOT_PARALLEL) //#define CKR_FUNCTION_NOT_PARALLEL             0x00000051
    {
        x = "CKR_FUNCTION_NOT_PARALLEL";
    }
    /* CKR_FUNCTION_NOT_SUPPORTED is new for v2.0 */
    else if (rv == CKR_FUNCTION_NOT_SUPPORTED) //#define CKR_FUNCTION_NOT_SUPPORTED            0x00000054
    {
        x = "CKR_FUNCTION_NOT_SUPPORTED";
    } else if (rv == CKR_KEY_HANDLE_INVALID) //#define CKR_KEY_HANDLE_INVALID                0x00000060
    {
        x = "CKR_KEY_HANDLE_INVALID";
    }
    /* CKR_KEY_SENSITIVE was removed for v2.0 */
    else if (rv == CKR_KEY_SIZE_RANGE)     //#define CKR_KEY_SIZE_RANGE                    0x00000062
    {
        x = "CKR_KEY_SIZE_RANGE";
    } else if (rv == CKR_KEY_TYPE_INCONSISTENT)//#define CKR_KEY_TYPE_INCONSISTENT             0x00000063
    {
        x = "CKR_KEY_TYPE_INCONSISTENT";
    }
    /* CKR_KEY_NOT_NEEDED, CKR_KEY_CHANGED, CKR_KEY_NEEDED,
    * CKR_KEY_INDIGESTIBLE, CKR_KEY_FUNCTION_NOT_PERMITTED,
    * CKR_KEY_NOT_WRAPPABLE, and CKR_KEY_UNEXTRACTABLE are new for
    * v2.0 */
    else if (rv == CKR_KEY_NOT_NEEDED) //#define CKR_KEY_NOT_NEEDED                    0x00000064
    {
        x = "CKR_KEY_NOT_NEEDED";
    } else if (rv == CKR_KEY_CHANGED) //#define CKR_KEY_CHANGED                       0x00000065
    {
        x = "CKR_KEY_CHANGED";
    } else if (rv == CKR_KEY_NEEDED) //#define CKR_KEY_NEEDED                        0x00000066
    {
        x = "CKR_KEY_NEEDED";
    } else if (rv == CKR_KEY_INDIGESTIBLE)//#define CKR_KEY_INDIGESTIBLE                  0x00000067
    {
        x = "CKR_KEY_INDIGESTIBLE";
    } else if (rv == CKR_KEY_FUNCTION_NOT_PERMITTED)//#define CKR_KEY_FUNCTION_NOT_PERMITTED        0x00000068
    {
        x = "CKR_KEY_FUNCTION_NOT_PERMITTED";
    } else if (rv == CKR_KEY_NOT_WRAPPABLE)//#define CKR_KEY_NOT_WRAPPABLE                 0x00000069
    {
        x = "CKR_KEY_NOT_WRAPPABLE";
    } else if (rv == CKR_KEY_UNEXTRACTABLE)//#define CKR_KEY_UNEXTRACTABLE                 0x0000006A
    {
        x = "CKR_KEY_UNEXTRACTABLE";
    } else if (rv == CKR_MECHANISM_INVALID)//#define CKR_MECHANISM_INVALID                 0x00000070
    {
        x = "CKR_SLOTCKR_MECHANISM_INVALID";
    } else if (rv == CKR_MECHANISM_PARAM_INVALID)//#define CKR_MECHANISM_PARAM_INVALID           0x00000071
    {
        x = "CKR_MECHANISM_PARAM_INVALID";
    }
    /* CKR_OBJECT_CLASS_INCONSISTENT and CKR_OBJECT_CLASS_INVALID
    * were removed for v2.0 */
    else if (rv == CKR_OBJECT_HANDLE_INVALID)//#define CKR_OBJECT_HANDLE_INVALID             0x00000082
    {
        x = "CKR_OBJECT_HANDLE_INVALID";
    } else if (rv == CKR_OPERATION_ACTIVE)//#define CKR_OPERATION_ACTIVE                  0x00000090
    {
        x = "CKR_OPERATION_ACTIVE";
    } else if (rv == CKR_OPERATION_NOT_INITIALIZED)//#define CKR_OPERATION_NOT_INITIALIZED         0x00000091
    {
        x = "CKR_OPERATION_NOT_INITIALIZED";
    } else if (rv == CKR_PIN_INCORRECT)//#define CKR_PIN_INCORRECT                     0x000000A0
    {
        x = "CKR_PIN_INCORRECT";
    } else if (rv == CKR_PIN_INVALID)//#define CKR_PIN_INVALID                       0x000000A1
    {
        x = "CKR_PIN_INVALID";
    } else if (rv == CKR_PIN_LEN_RANGE)//#define CKR_PIN_LEN_RANGE                     0x000000A2
    {
        x = "CKR_PIN_LEN_RANGE";
    } /* CKR_PIN_EXPIRED and CKR_PIN_LOCKED are new for v2.0 */
    else if (rv == CKR_PIN_EXPIRED)//#define CKR_PIN_EXPIRED                       0x000000A3
    {
        x = "CKR_PIN_EXPIRED";
    } else if (rv == CKR_PIN_LOCKED)//#define CKR_PIN_LOCKED                        0x000000A4
    {
        x = "CKR_PIN_LOCKED";
    } else if (rv == CKR_SESSION_CLOSED)//#define CKR_SESSION_CLOSED                    0x000000B0
    {
        x = "CKR_SESSION_CLOSED";
    } else if (rv == CKR_SESSION_COUNT)//#define CKR_SESSION_COUNT                     0x000000B1
    {
        x = "CKR_SESSION_COUNT";
    } else if (rv == CKR_SESSION_HANDLE_INVALID)//#define CKR_SESSION_HANDLE_INVALID            0x000000B3
    {
        x = "CKR_SESSION_HANDLE_INVALID";
    } else if (rv == CKR_SESSION_PARALLEL_NOT_SUPPORTED)//#define CKR_SESSION_PARALLEL_NOT_SUPPORTED    0x000000B4
    {
        x = "CKR_SESSION_PARALLEL_NOT_SUPPORTED";
    } else if (rv == CKR_SESSION_READ_ONLY)//#define CKR_SESSION_READ_ONLY                 0x000000B5
    {
        x = "CKR_SESSION_READ_ONLY";
    } else if (rv == CKR_SESSION_EXISTS)//#define CKR_SESSION_EXISTS                    0x000000B6
    {
        x = "CKR_SESSION_EXISTS";
    }
    /* CKR_SESSION_READ_ONLY_EXISTS and
    * CKR_SESSION_READ_WRITE_SO_EXISTS are new for v2.0 */

    else if (rv == CKR_SESSION_READ_ONLY_EXISTS)//#define CKR_SESSION_READ_ONLY_EXISTS          0x000000B7
    {
        x = "CKR_SESSION_READ_ONLY_EXISTS";
    } else if (rv == CKR_SESSION_READ_WRITE_SO_EXISTS)//#define CKR_SESSION_READ_WRITE_SO_EXISTS      0x000000B8
    {
        x = "CKR_SESSION_READ_WRITE_SO_EXISTS";
    } else if (rv == CKR_SIGNATURE_INVALID)//#define CKR_SIGNATURE_INVALID                 0x000000C0
    {
        x = "CKR_SIGNATURE_INVALID";
    } else if (rv == CKR_SIGNATURE_LEN_RANGE)//#define CKR_SIGNATURE_LEN_RANGE               0x000000C1
    {
        x = "CKR_SIGNATURE_LEN_RANGE";
    } else if (rv == CKR_TEMPLATE_INCOMPLETE)//#define CKR_TEMPLATE_INCOMPLETE               0x000000D0
    {
        x = "CKR_TEMPLATE_INCOMPLETE";
    } else if (rv == CKR_TEMPLATE_INCONSISTENT)//#define CKR_TEMPLATE_INCONSISTENT             0x000000D1
    {
        x = "CKR_TEMPLATE_INCONSISTENT";
    } else if (rv == CKR_TOKEN_NOT_PRESENT)//#define CKR_TOKEN_NOT_PRESENT                 0x000000E0
    {
        x = "CKR_TOKEN_NOT_PRESENT";
    } else if (rv == CKR_TOKEN_NOT_RECOGNIZED)//#define CKR_TOKEN_NOT_RECOGNIZED              0x000000E1
    {
        x = "CKR_TOKEN_NOT_RECOGNIZED";
    } else if (rv == CKR_TOKEN_WRITE_PROTECTED)//#define CKR_TOKEN_WRITE_PROTECTED             0x000000E2
    {
        x = "CKR_TOKEN_WRITE_PROTECTED";
    } else if (rv == CKR_UNWRAPPING_KEY_HANDLE_INVALID)//#define CKR_UNWRAPPING_KEY_HANDLE_INVALID     0x000000F0
    {
        x = "CKR_UNWRAPPING_KEY_HANDLE_INVALID";
    } else if (rv == CKR_UNWRAPPING_KEY_SIZE_RANGE)//#define CKR_UNWRAPPING_KEY_SIZE_RANGE         0x000000F1
    {
        x = "CKR_UNWRAPPING_KEY_SIZE_RANGE";
    } else if (rv == CKR_UNWRAPPING_KEY_TYPE_INCONSISTENT)//#define CKR_UNWRAPPING_KEY_TYPE_INCONSISTENT  0x000000F2
    {
        x = "CKR_UNWRAPPING_KEY_TYPE_INCONSISTENT";
    } else if (rv == CKR_USER_ALREADY_LOGGED_IN)//#define CKR_USER_ALREADY_LOGGED_IN            0x00000100
    {
        x = "CKR_USER_ALREADY_LOGGED_IN";
    } else if (rv == CKR_USER_NOT_LOGGED_IN)//#define CKR_USER_NOT_LOGGED_IN                0x00000101
    {
        x = "CKR_USER_NOT_LOGGED_IN";
    } else if (rv == CKR_USER_PIN_NOT_INITIALIZED)//#define CKR_USER_PIN_NOT_INITIALIZED          0x00000102
    {
        x = "CKR_USER_PIN_NOT_INITIALIZED";
    } else if (rv == CKR_USER_TYPE_INVALID)//#define CKR_USER_TYPE_INVALID                 0x00000103
    {
        x = "CKR_USER_TYPE_INVALID";
    }
    /* CKR_USER_ANOTHER_ALREADY_LOGGED_IN and CKR_USER_TOO_MANY_TYPES
    * are new to v2.01 */
    else if (rv == CKR_USER_ANOTHER_ALREADY_LOGGED_IN)//#define CKR_USER_ANOTHER_ALREADY_LOGGED_IN    0x00000104
    {
        x = "CKR_USER_ANOTHER_ALREADY_LOGGED_IN";
    } else if (rv == CKR_USER_TOO_MANY_TYPES)//#define CKR_USER_TOO_MANY_TYPES               0x00000105
    {
        x = "CKR_USER_TOO_MANY_TYPES";
    } else if (rv == CKR_WRAPPED_KEY_INVALID)//#define CKR_WRAPPED_KEY_INVALID               0x00000110
    {
        x = "CKR_WRAPPED_KEY_INVALID";
    } else if (rv == CKR_WRAPPED_KEY_LEN_RANGE)//#define CKR_WRAPPED_KEY_LEN_RANGE             0x00000112
    {
        x = "CKR_SLOT_CKR_WRAPPED_KEY_LEN_RANGE";
    } else if (rv == CKR_WRAPPING_KEY_HANDLE_INVALID)//#define CKR_WRAPPING_KEY_HANDLE_INVALID       0x00000113
    {
        x = "CKR_WRAPPING_KEY_HANDLE_INVALID";
    } else if (rv == CKR_WRAPPING_KEY_SIZE_RANGE)//#define CKR_WRAPPING_KEY_SIZE_RANGE           0x00000114
    {
        x = "CKR_WRAPPING_KEY_SIZE_RANGE";
    } else if (rv == CKR_WRAPPING_KEY_TYPE_INCONSISTENT)//#define CKR_WRAPPING_KEY_TYPE_INCONSISTENT    0x00000115
    {
        x = "CKR_WRAPPING_KEY_TYPE_INCONSISTENT";
    } else if (rv == CKR_RANDOM_SEED_NOT_SUPPORTED)//#define CKR_RANDOM_SEED_NOT_SUPPORTED         0x00000120
    {
        x = "CKR_RANDOM_SEED_NOT_SUPPORTED";
    }
    /* These are new to v2.0 */
    else if (rv == CKR_RANDOM_NO_RNG)//#define CKR_RANDOM_NO_RNG                     0x00000121
    {
        x = "CKR_RANDOM_NO_RNG";
    }
    /* These are new to v2.11 */
    else if (rv == CKR_DOMAIN_PARAMS_INVALID)//#define CKR_DOMAIN_PARAMS_INVALID             0x00000130
    {
        x = "CKR_DOMAIN_PARAMS_INVALID";
    }
    /* These are new to v2.0 */
    else if (rv == CKR_BUFFER_TOO_SMALL)//#define CKR_BUFFER_TOO_SMALL                  0x00000150
    {
        x = "CKR_BUFFER_TOO_SMALL";
    } else if (rv == CKR_SAVED_STATE_INVALID)//#define CKR_SAVED_STATE_INVALID               0x00000160
    {
        x = "CKR_SAVED_STATE_INVALID";
    } else if (rv == CKR_INFORMATION_SENSITIVE)//#define CKR_INFORMATION_SENSITIVE             0x00000170
    {
        x = "CKR_INFORMATION_SENSITIVE";
    } else if (rv == CKR_STATE_UNSAVEABLE)//#define CKR_STATE_UNSAVEABLE                  0x00000180
    {
        x = "CKR_STATE_UNSAVEABLE";
    }
    /* These are new to v2.01 */
    else if (rv == CKR_CRYPTOKI_NOT_INITIALIZED)//#define CKR_CRYPTOKI_NOT_INITIALIZED          0x00000190
    {
        x = "CKR_CRYPTOKI_NOT_INITIALIZED";
    } else if (rv == CKR_CRYPTOKI_ALREADY_INITIALIZED)    //#define CKR_CRYPTOKI_ALREADY_INITIALIZED      0x00000191
    {
        x = "CKR_CRYPTOKI_ALREADY_INITIALIZED";
    } else if (rv == CKR_MUTEX_BAD)//#define CKR_MUTEX_BAD                         0x000001A0
    {
        x = "CKR_MUTEX_BAD";
    } else if (rv == CKR_MUTEX_NOT_LOCKED)//#define CKR_MUTEX_NOT_LOCKED                  0x000001A1
    {
        x = "CKR_MUTEX_NOT_LOCKED";

    } else if (rv == CKR_VENDOR_DEFINED)//#define CKR_VENDOR_DEFINED                    0x80000000
    {
        x = "CKR_VENDOR_DEFINED";
    } else
    {
        x = "-1";
    }

    return x;
}


QByteArray CryptoToken::toHex(const std::vector<unsigned char> &data)
{
    return QByteArray((const char*)data.data(), data.size()).toHex();
}

std::vector<unsigned char> CryptoToken::fromHex(const QString &data)
{
    QByteArray bin = QByteArray::fromHex(data.toLatin1());
    return std::vector<unsigned char>(bin.constData(), bin.constData() + bin.size());
}