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/* This file is part of the TDE libraries
Copyright (C) 2015 Timothy Pearson <kb9vqf@pearsoncomputing.net>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#ifndef _TDECRYPTOGRAPHICCARDDEVICE_H
#define _TDECRYPTOGRAPHICCARDDEVICE_H
#include "tdegenericdevice.h"
#ifndef _TDECRYPTOGRAPHICCARDDEVICE_INTERNAL
#ifdef KSSL_HAVE_SSL
typedef struct x509_st X509;
#else
class X509;
#endif
#endif
class TQEventLoopThread;
class CryptoCardDeviceWatcher;
typedef TQValueList<X509*> X509CertificatePtrList;
typedef TQValueListIterator<X509*> X509CertificatePtrListIterator;
class TDECORE_EXPORT TDECryptographicCardDevice : public TDEGenericDevice
{
Q_OBJECT
public:
/**
* Constructor.
* @param Device type
*/
TDECryptographicCardDevice(TDEGenericDeviceType::TDEGenericDeviceType dt, TQString dn=TQString::null);
/**
* Destructor.
*/
~TDECryptographicCardDevice();
/**
* Enable / disable monitoring of insert / remove events.
* @param enable true to enable, false to disable.
*/
void enableCardMonitoring(bool enable);
/**
* Enable / disable PIN entry.
*
* @note You must connect to pinRequested and call setProvidedPin with
* the provided PIN, otherwise the TDECryptographicCardDevice object
* will hang waiting for input.
*
* @param enable true to enable, false to disable.
*
* @see setProvidedPin(TQString pin)
* @see pinRequested
*/
void enablePINEntryCallbacks(bool enable);
/**
* If monitoring of insert / remove events is enabled,
* return whether or not a card is present.
* @return -1 if status unknown, 0 if card not present,
* 1 if card is present.
*/
int cardPresent();
/**
* If monitoring of insert / remove events is enabled,
* and a card has been inserted, @return the card's ATR.
* @return TQString::null if no card or card status unknown.
*/
TQString cardATR();
/**
* If monitoring of insert / remove events is enabled,
* and a card has been inserted, @return a list of all
* X509 certificates on the card.
* @return an empty list if no card or card contents unknown.
*
* @example KSSLCertificate* tdeCert = KSSLCertificate::fromX509(cardX509Certificates().first());
*/
X509CertificatePtrList cardX509Certificates();
/**
* Sets the user-provided PIN from within the pinRequested callback.
* This method must not be called from anywhere else in user code.
* @param pin the user-provided PIN, TQString::null to abort
*
* @see pinRequested(TQString prompt)
*/
void setProvidedPin(TQString pin);
/**
* If monitoring of insert / remove events is enabled, and a card has been inserted,
* decrypt data originally encrypted using a public key from one of the certificates
* stored on the card.
* This operation takes place on the card, and in most cases will require PIN entry.
* @param ciphertext Encrypted data
* @param plaintext Decrypted data
* @param errstr Pointer to TQString to be loaded with error description on failure
* @return 0 on success, -1 on general failure, -2 on encryption failure
*/
int decryptDataEncryptedWithCertPublicKey(TQByteArray &ciphertext, TQByteArray &plaintext, TQString *errstr=NULL);
/**
* Create a new random key and encrypt with the public key
* contained in the given certificate.
* @param plaintext Generated (decrypted) random key
* @param ciphertext Encrypted key
* @param certificate X509 certificate containing the public key to use
* @return 0 on success, -1 on general failure, -2 on encryption failure
*/
static int createNewSecretRSAKeyFromCertificate(TQByteArray &plaintext, TQByteArray &ciphertext, X509* certificate);
public slots:
void cardStatusChanged(TQString status, TQString atr);
void workerRequestedPin(TQString prompt);
signals:
void cardInserted();
void cardRemoved();
void pinRequested(TQString prompt, TDECryptographicCardDevice* cdevice);
private:
TQEventLoopThread *m_watcherThread;
CryptoCardDeviceWatcher *m_watcherObject;
bool m_cardPresent;
TQString m_cardATR;
X509CertificatePtrList m_cardCertificates;
friend class TDEHardwareDevices;
friend class CryptoCardDeviceWatcher;
};
#endif // _TDECRYPTOGRAPHICCARDDEVICE_H
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