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936 lines
26 KiB
936 lines
26 KiB
/* This file is part of the TDE libraries
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Copyright (C) 2015 Timothy Pearson <kb9vqf@pearsoncomputing.net>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License version 2 as published by the Free Software Foundation.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#ifdef WITH_PKCS
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#define _TDECRYPTOGRAPHICCARDDEVICE_INTERNAL 1
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#endif
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#include "tdecryptographiccarddevice_private.h"
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#include "tdecryptographiccarddevice.h"
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#include <tqpixmap.h>
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#include <tqtimer.h>
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#include <ntqthread.h>
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#include <ntqeventloop.h>
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#include <ntqapplication.h>
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#include "tdeglobal.h"
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#include "tdelocale.h"
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#include "tdeapplication.h"
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#include "tdehardwaredevices.h"
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#include "config.h"
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// 1 second
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#define PCSC_POLL_TIMEOUT_S 1000
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#define CARD_MAX_LOGIN_RETRY_COUNT 3
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/* FIXME
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* This is incomplete
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*/
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#ifdef WITH_PCSC
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static TQString pcsc_error_code_to_string(long errcode) {
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if (errcode == SCARD_W_UNPOWERED_CARD) {
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return i18n("card not powered on");
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}
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else if (errcode == SCARD_E_PROTO_MISMATCH) {
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return i18n("protocol mismatch");
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}
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else {
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return TQString::null;
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}
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}
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#endif
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CryptoCardDeviceWatcher::CryptoCardDeviceWatcher() {
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#ifdef WITH_PCSC
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m_readerStates = NULL;
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#endif
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m_cardPINPromptDone = true;
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m_pinCallbacksEnabled = false;
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m_cardReusePIN = false;
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}
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CryptoCardDeviceWatcher::~CryptoCardDeviceWatcher() {
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#ifdef WITH_PCSC
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free(m_readerStates);
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#endif
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}
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void CryptoCardDeviceWatcher::run() {
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#ifdef WITH_PCSC
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bool first_loop;
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unsigned int i;
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long ret;
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DWORD dword_readers;
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LPSTR lpstring_readers = NULL;
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TQStringList readers;
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first_loop = true;
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m_terminationRequested = false;
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TQEventLoop* eventLoop = TQApplication::eventLoop();
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if (!eventLoop) return;
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ret = SCardEstablishContext(SCARD_SCOPE_SYSTEM, NULL, NULL, &m_cardContext);
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if (ret != SCARD_S_SUCCESS) {
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printf("TDECryptographicCardDevice: PCSC SCardEstablishContext cannot connect to resource manager (%lX)", ret);
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eventLoop->exit(0);
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return;
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}
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ret = SCardListReaders(m_cardContext, NULL, NULL, &dword_readers);
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if (ret == SCARD_S_SUCCESS) {
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lpstring_readers = (LPSTR)malloc(sizeof(char)*dword_readers);
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if (lpstring_readers == NULL) {
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printf("TDECryptographicCardDevice: insufficient memory, aborting");
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eventLoop->exit(0);
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return;
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}
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ret = SCardListReaders(m_cardContext, NULL, lpstring_readers, &dword_readers);
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if (ret == SCARD_S_SUCCESS) {
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/* Extract reader names from the null separated string */
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char *ptr = lpstring_readers;
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while (*ptr != '\0') {
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readers.append(ptr);
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ptr += strlen(ptr)+1;
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}
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free(lpstring_readers);
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m_readerStates = (SCARD_READERSTATE*)calloc(readers.count(), sizeof(*m_readerStates));
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if (m_readerStates == NULL) {
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printf("TDECryptographicCardDevice: insufficient memory, aborting");
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free(lpstring_readers);
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eventLoop->exit(0);
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return;
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}
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for (i=0; i<readers.count(); i++) {
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m_readerStates[i].szReader = strdup(readers[i].ascii());
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m_readerStates[i].dwCurrentState = SCARD_STATE_UNAWARE;
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}
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ret = SCardGetStatusChange(m_cardContext, PCSC_POLL_TIMEOUT_S, m_readerStates, readers.count());
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while ((ret == SCARD_S_SUCCESS) || (ret == SCARD_E_TIMEOUT)) {
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if (m_terminationRequested) {
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for (i=0; i<readers.count(); i++) {
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free((char*)m_readerStates[i].szReader);
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m_readerStates[i].szReader = NULL;
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}
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eventLoop->exit(0);
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return;
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}
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for (i=0; i<readers.count(); i++) {
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/* FIXME
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* Find a better / more reliable way to match the card low level device to the PCSC name
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*/
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SCARDHANDLE hCard = 0;
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DWORD dwActiveProtocol = 0;
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DWORD cByte = 0;
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TQString reader_vendor_name;
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TQString reader_interface_type;
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ret = SCardConnect(m_cardContext, readers[i].ascii(), SCARD_SHARE_DIRECT, SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1, &hCard, &dwActiveProtocol);
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if (ret == SCARD_S_SUCCESS) {
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ret = SCardGetAttrib(hCard, SCARD_ATTR_VENDOR_NAME, NULL, &cByte);
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if (ret == SCARD_S_SUCCESS) {
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char* data = new char[cByte];
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ret = SCardGetAttrib(hCard, SCARD_ATTR_VENDOR_NAME, (LPBYTE)data, &cByte);
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reader_vendor_name = data;
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delete [] data;
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}
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ret = SCardGetAttrib(hCard, SCARD_ATTR_VENDOR_IFD_TYPE, NULL, &cByte);
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if (ret == SCARD_S_SUCCESS) {
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char* data = new char[cByte];
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ret = SCardGetAttrib(hCard, SCARD_ATTR_VENDOR_IFD_TYPE, (LPBYTE)data, &cByte);
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reader_interface_type = data;
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delete [] data;
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}
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SCardDisconnect(hCard, SCARD_LEAVE_CARD);
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}
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if (!readers[i].contains(cardDevice->friendlyName())) {
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if (!cardDevice->friendlyName().contains(reader_vendor_name) ||
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((reader_interface_type != "") && !cardDevice->friendlyName().contains(reader_vendor_name))) {
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continue;
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}
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}
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if (first_loop) {
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if (m_readerStates[i].dwEventState & SCARD_STATE_PRESENT) {
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// sleep(1); // Allow the card to settle
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TQString atr = getCardATR(readers[i]);
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retrieveCardCertificates(readers[i]);
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statusChanged("PRESENT", atr);
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}
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else {
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deleteAllCertificatesFromCache();
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}
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first_loop = false;
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}
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if (m_readerStates[i].dwEventState & SCARD_STATE_CHANGED) {
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if ((m_readerStates[i].dwCurrentState & SCARD_STATE_PRESENT)
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&& (m_readerStates[i].dwEventState & SCARD_STATE_EMPTY)) {
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deleteAllCertificatesFromCache();
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statusChanged("REMOVED", TQString::null);
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}
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else if ((m_readerStates[i].dwCurrentState & SCARD_STATE_EMPTY)
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&& (m_readerStates[i].dwEventState & SCARD_STATE_PRESENT)) {
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// sleep(1); // Allow the card to settle
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TQString atr = getCardATR(readers[i]);
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retrieveCardCertificates(readers[i]);
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statusChanged("INSERTED", atr);
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}
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m_readerStates[i].dwCurrentState = m_readerStates[i].dwEventState;
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}
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else {
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continue;
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}
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}
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ret = SCardGetStatusChange(m_cardContext, PCSC_POLL_TIMEOUT_S, m_readerStates, readers.count());
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}
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}
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}
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eventLoop->exit(0);
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#endif
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}
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void CryptoCardDeviceWatcher::requestTermination() {
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m_terminationRequested = true;
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}
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void CryptoCardDeviceWatcher::setProvidedPin(TQString pin) {
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m_cardPIN = pin;
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m_cardPINPromptDone = true;
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}
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void CryptoCardDeviceWatcher::retrySamePin(bool enable) {
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m_cardReusePIN = enable;
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if (!enable) {
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m_cardPIN = "SHREDDINGTHEPINISMOSTSECURE";
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m_cardPIN = TQString::null;
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}
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}
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TQString CryptoCardDeviceWatcher::getCardATR(TQString readerName) {
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#ifdef WITH_PCSC
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unsigned int i;
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long ret;
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TQString atr_formatted;
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SCARDHANDLE hCard = 0;
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DWORD dwActiveProtocol = 0;
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DWORD cByte = 0;
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ret = SCardConnect(m_cardContext, readerName.ascii(), SCARD_SHARE_SHARED, SCARD_PROTOCOL_T0 | SCARD_PROTOCOL_T1, &hCard, &dwActiveProtocol);
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if (ret == SCARD_S_SUCCESS) {
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ret = SCardGetAttrib(hCard, SCARD_ATTR_ATR_STRING, NULL, &cByte);
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if (ret == SCARD_S_SUCCESS) {
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char* data = new char[cByte];
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ret = SCardGetAttrib(hCard, SCARD_ATTR_ATR_STRING, (LPBYTE)data, &cByte);
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atr_formatted = TQString::null;
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for (i=0; i<cByte; i++) {
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TQString formatted;
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formatted.sprintf("%02x ", ((uint8_t)(*(data+i))));
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atr_formatted.append(formatted.upper());
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}
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atr_formatted = atr_formatted.stripWhiteSpace();
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delete [] data;
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SCardDisconnect(hCard, SCARD_LEAVE_CARD);
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}
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}
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else {
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TQString errstring = pcsc_error_code_to_string(ret);
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if (errstring != "") {
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atr_formatted = i18n("Unknown (%1)").arg(errstring);
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}
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else {
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atr_formatted = TQString("CARD_CONNECT_FAIL (%1)").arg(ret, 0, 16);
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}
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}
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return atr_formatted;
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#else
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return TQString::null;
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#endif
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}
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void CryptoCardDeviceWatcher::enablePINEntryCallbacks(bool enable) {
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m_pinCallbacksEnabled = enable;
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}
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TQString CryptoCardDeviceWatcher::doPinRequest(TQString prompt) {
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if (!m_pinCallbacksEnabled) {
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return TQString::null;
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}
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if (m_cardReusePIN) {
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return m_cardPIN;
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}
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m_cardPINPromptDone = false;
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emit(pinRequested(prompt));
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while (!m_cardPINPromptDone) {
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usleep(100);
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}
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if (m_cardPIN.length() > 0) {
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return m_cardPIN;
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}
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else {
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return TQString::null;
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}
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}
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#ifdef WITH_PKCS
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static void pkcs_log_hook(IN void * const global_data, IN unsigned flags, IN const char * const format, IN va_list args) {
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vprintf(format, args);
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printf("\n");
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}
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static PKCS11H_BOOL pkcs_pin_hook(IN void * const global_data, IN void * const user_data, IN const pkcs11h_token_id_t token, IN const unsigned retry, OUT char * const pin, IN const size_t pin_max) {
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CryptoCardDeviceWatcher* watcher = (CryptoCardDeviceWatcher*)global_data;
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TQString providedPin = watcher->doPinRequest(i18n("Please enter the PIN for '%1'").arg(token->display));
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if (providedPin.length() > 0) {
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snprintf(pin, pin_max, "%s", providedPin.ascii());
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// Success
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return 1;
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}
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else {
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// Abort
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return 0;
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}
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}
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#endif
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int CryptoCardDeviceWatcher::initializePkcs() {
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#if defined(WITH_PKCS)
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CK_RV rv;
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printf("Initializing pkcs11-helper\n");
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if ((rv = pkcs11h_initialize()) != CKR_OK) {
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printf("pkcs11h_initialize failed: %s\n", pkcs11h_getMessage(rv));
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return -1;
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}
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printf("Registering pkcs11-helper hooks\n");
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if ((rv = pkcs11h_setLogHook(pkcs_log_hook, this)) != CKR_OK) {
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printf("pkcs11h_setLogHook failed: %s\n", pkcs11h_getMessage(rv));
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return -1;
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}
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pkcs11h_setLogLevel(PKCS11H_LOG_WARN);
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// pkcs11h_setLogLevel(PKCS11H_LOG_DEBUG2);
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#if 0
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if ((rv = pkcs11h_setTokenPromptHook(_pkcs11h_hooks_token_prompt, NULL)) != CKR_OK) {
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printf("pkcs11h_setTokenPromptHook failed: %s\n", pkcs11h_getMessage(rv));
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return -1;
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}
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#endif
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if ((rv = pkcs11h_setMaxLoginRetries(CARD_MAX_LOGIN_RETRY_COUNT)) != CKR_OK) {
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printf("pkcs11h_setMaxLoginRetries failed: %s\n", pkcs11h_getMessage(rv));
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return -1;
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}
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if ((rv = pkcs11h_setPINPromptHook(pkcs_pin_hook, this)) != CKR_OK) {
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printf("pkcs11h_setPINPromptHook failed: %s\n", pkcs11h_getMessage(rv));
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return -1;
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}
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printf("Adding provider '%s'\n", OPENSC_PKCS11_PROVIDER_LIBRARY);
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if ((rv = pkcs11h_addProvider(OPENSC_PKCS11_PROVIDER_LIBRARY, OPENSC_PKCS11_PROVIDER_LIBRARY, FALSE, PKCS11H_PRIVATEMODE_MASK_AUTO, PKCS11H_SLOTEVENT_METHOD_AUTO, 0, FALSE)) != CKR_OK) {
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printf("pkcs11h_addProvider failed: %s\n", pkcs11h_getMessage(rv));
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return -1;
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}
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return 0;
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#else
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return -1;
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#endif
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}
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int CryptoCardDeviceWatcher::retrieveCardCertificates(TQString readerName) {
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#if defined(WITH_PKCS)
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int ret = -1;
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CK_RV rv;
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pkcs11h_certificate_id_list_t issuers;
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pkcs11h_certificate_id_list_t certs;
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if (initializePkcs() < 0) {
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printf("Unable to initialize PKCS\n");
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return -1;
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}
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rv = pkcs11h_certificate_enumCertificateIds(PKCS11H_ENUM_METHOD_CACHE, NULL, PKCS11H_PROMPT_MASK_ALLOW_PIN_PROMPT, &issuers, &certs);
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if ((rv != CKR_OK) || (certs == NULL)) {
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printf("Cannot enumerate certificates: %s\n", pkcs11h_getMessage(rv));
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return -1;
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}
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printf("Successfully enumerated certificates\n");
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int i = 0;
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for (pkcs11h_certificate_id_list_t cert = certs; cert != NULL; cert = cert->next) {
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TQString label = cert->certificate_id->displayName;
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printf("Certificate %d name: '%s'\n", i, label.ascii());
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pkcs11h_certificate_t certificate;
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rv = pkcs11h_certificate_create(certs->certificate_id, NULL, PKCS11H_PROMPT_MASK_ALLOW_PIN_PROMPT, PKCS11H_PIN_CACHE_INFINITE, &certificate);
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if (rv != CKR_OK) {
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printf("Cannot read certificate: %s\n", pkcs11h_getMessage(rv));
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pkcs11h_certificate_freeCertificateId(certs->certificate_id);
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ret = -1;
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break;
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}
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pkcs11h_certificate_freeCertificateId(certs->certificate_id);
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pkcs11h_openssl_session_t openssl_session = NULL;
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if ((openssl_session = pkcs11h_openssl_createSession(certificate)) == NULL) {
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printf("Cannot initialize openssl session to retrieve cryptographic objects\n");
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pkcs11h_certificate_freeCertificate(certificate);
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ret = -1;
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break;
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}
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certificate = NULL; // the certificate object is managed by openssl_session
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X509* x509_local;
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x509_local = pkcs11h_openssl_session_getX509(openssl_session);
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if (x509_local) {
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printf("Successfully retrieved X509 certificate\n");
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}
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else {
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printf("Cannot get X509 object\n");
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ret = -1;
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}
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#if 0
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RSA* rsa_local;
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rsa_local = pkcs11h_openssl_session_getRSA(openssl_session);
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if (rsa_local) {
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printf("Successfully retrieved RSA public key\n");
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}
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else {
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printf("Cannot get RSA object\n");
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ret = -1;
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}
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#endif
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X509* x509_copy = X509_dup(x509_local);
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if (x509_copy) {
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cardDevice->m_cardCertificates.append(x509_copy);
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}
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else {
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printf("Unable to copy X509 certificate\n");
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}
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pkcs11h_openssl_freeSession(openssl_session);
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i++;
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}
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pkcs11h_certificate_freeCertificateIdList(issuers);
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return ret;
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#else
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return -1;
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#endif
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}
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void CryptoCardDeviceWatcher::deleteAllCertificatesFromCache() {
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#ifdef WITH_PKCS
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X509 *x509_cert;
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X509CertificatePtrListIterator it;
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for (it = cardDevice->m_cardCertificates.begin(); it != cardDevice->m_cardCertificates.end(); ++it) {
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x509_cert = *it;
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X509_free(x509_cert);
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}
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cardDevice->m_cardCertificates.clear();
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#endif
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}
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|
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TDECryptographicCardDevice::TDECryptographicCardDevice(TDEGenericDeviceType::TDEGenericDeviceType dt, TQString dn) : TDEGenericDevice(dt, dn),
|
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m_watcherThread(NULL),
|
|
m_watcherObject(NULL),
|
|
m_cardPresent(false) {
|
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}
|
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|
|
TDECryptographicCardDevice::~TDECryptographicCardDevice() {
|
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enableCardMonitoring(false);
|
|
}
|
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|
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void TDECryptographicCardDevice::enableCardMonitoring(bool enable) {
|
|
#ifdef WITH_PCSC
|
|
if (enable) {
|
|
if (m_watcherObject && m_watcherThread) {
|
|
// Monitoring thread already active
|
|
if ((cardPresent() == 1) && (cardX509Certificates().count() > 0)) {
|
|
// Card was already inserted and initialized
|
|
emit(certificateListAvailable(this));
|
|
}
|
|
|
|
// Abort!
|
|
return;
|
|
}
|
|
|
|
m_watcherThread = new TQEventLoopThread();
|
|
m_watcherObject = new CryptoCardDeviceWatcher();
|
|
|
|
m_watcherObject->cardDevice = this;
|
|
m_watcherObject->moveToThread(m_watcherThread);
|
|
TQObject::connect(m_watcherObject, SIGNAL(statusChanged(TQString,TQString)), this, SLOT(cardStatusChanged(TQString,TQString)));
|
|
TQObject::connect(m_watcherObject, SIGNAL(pinRequested(TQString)), this, SLOT(workerRequestedPin(TQString)));
|
|
TQTimer::singleShot(0, m_watcherObject, SLOT(run()));
|
|
|
|
m_watcherThread->start();
|
|
}
|
|
else {
|
|
if (m_watcherObject) {
|
|
m_watcherObject->requestTermination();
|
|
}
|
|
if (m_watcherThread) {
|
|
m_watcherThread->wait();
|
|
delete m_watcherThread;
|
|
m_watcherThread = NULL;
|
|
}
|
|
if (m_watcherObject) {
|
|
delete m_watcherObject;
|
|
m_watcherObject = NULL;
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void TDECryptographicCardDevice::enablePINEntryCallbacks(bool enable) {
|
|
if (m_watcherObject) {
|
|
m_watcherObject->enablePINEntryCallbacks(enable);
|
|
}
|
|
}
|
|
|
|
int TDECryptographicCardDevice::cardPresent() {
|
|
if (m_watcherObject && m_watcherThread) {
|
|
if (m_cardPresent)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
else {
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
TQString TDECryptographicCardDevice::cardATR() {
|
|
if (m_watcherObject && m_watcherThread) {
|
|
if (m_cardPresent)
|
|
return m_cardATR;
|
|
else
|
|
return TQString::null;
|
|
}
|
|
else {
|
|
return TQString::null;
|
|
}
|
|
}
|
|
|
|
X509CertificatePtrList TDECryptographicCardDevice::cardX509Certificates() {
|
|
if (m_watcherObject && m_watcherThread) {
|
|
if (m_cardPresent) {
|
|
return m_cardCertificates;
|
|
}
|
|
else {
|
|
return X509CertificatePtrList();
|
|
}
|
|
}
|
|
else {
|
|
return X509CertificatePtrList();
|
|
}
|
|
}
|
|
|
|
void TDECryptographicCardDevice::cardStatusChanged(TQString status, TQString atr) {
|
|
if (status == "INSERTED") {
|
|
m_cardPresent = true;
|
|
m_cardATR = atr;
|
|
emit(cardInserted(this));
|
|
if (m_cardCertificates.count() > 0) {
|
|
emit(certificateListAvailable(this));
|
|
}
|
|
}
|
|
else if (status == "REMOVED") {
|
|
m_cardPresent = false;
|
|
m_cardATR = atr;
|
|
emit(cardRemoved(this));
|
|
}
|
|
else if (status == "PRESENT") {
|
|
m_cardATR = atr;
|
|
m_cardPresent = true;
|
|
if (m_cardCertificates.count() > 0) {
|
|
emit(certificateListAvailable(this));
|
|
}
|
|
}
|
|
}
|
|
|
|
void TDECryptographicCardDevice::setProvidedPin(TQString pin) {
|
|
if (m_watcherObject) {
|
|
m_watcherObject->setProvidedPin(pin);
|
|
}
|
|
}
|
|
|
|
TQString TDECryptographicCardDevice::autoPIN() {
|
|
#if defined(WITH_PKCS)
|
|
TQString retString = TQString::null;
|
|
|
|
// Use subjAltName field in card certificate to provide the card's PIN,
|
|
// in order to support optional pin-less operation.
|
|
// Parse the TDE autologin extension
|
|
// Structure:
|
|
// OID 1.3.6.1.4.1.40364.1.2.1
|
|
// SEQUENCE
|
|
// ASN1_CONSTRUCTED [index: 0] (field name: pin)
|
|
// GeneralString
|
|
|
|
// Register custom OID type for TDE autopin data
|
|
ASN1_OBJECT* tde_autopin_data_object = OBJ_txt2obj("1.3.6.1.4.1.40364.1.2.1", 0);
|
|
|
|
int i;
|
|
X509CertificatePtrListIterator it;
|
|
for (it = m_cardCertificates.begin(); it != m_cardCertificates.end(); ++it) {
|
|
X509* x509_cert = *it;
|
|
GENERAL_NAMES* subjectAltNames = (GENERAL_NAMES*)X509_get_ext_d2i(x509_cert, NID_subject_alt_name, NULL, NULL);
|
|
int altNameCount = sk_GENERAL_NAME_num(subjectAltNames);
|
|
for (i=0; i < altNameCount; i++) {
|
|
GENERAL_NAME* generalName = sk_GENERAL_NAME_value(subjectAltNames, i);
|
|
if (generalName->type == GEN_OTHERNAME) {
|
|
OTHERNAME* otherName = generalName->d.otherName;
|
|
if (!OBJ_cmp(otherName->type_id, tde_autopin_data_object)) {
|
|
ASN1_TYPE* asnValue = otherName->value;
|
|
if (asnValue) {
|
|
// Found autopin structure
|
|
int index;
|
|
ASN1_TYPE* asnSeqValue = NULL;
|
|
ASN1_GENERALSTRING* asnGeneralString = NULL;
|
|
STACK_OF(ASN1_TYPE) *asnSeqValueStack = NULL;
|
|
long asn1SeqValueObjectLength;
|
|
int asn1SeqValueObjectTag;
|
|
int asn1SeqValueObjectClass;
|
|
int returnCode;
|
|
|
|
index = 0; // Search for the PIN field
|
|
asnSeqValueStack = ASN1_seq_unpack_ASN1_TYPE(ASN1_STRING_data(asnValue->value.sequence), ASN1_STRING_length(asnValue->value.sequence), d2i_ASN1_TYPE, ASN1_TYPE_free);
|
|
asnSeqValue = sk_ASN1_TYPE_value(asnSeqValueStack, index);
|
|
if (asnSeqValue) {
|
|
if (asnSeqValue->value.octet_string->data[0] == ((V_ASN1_CONSTRUCTED | V_ASN1_CONTEXT_SPECIFIC) + index)) {
|
|
const unsigned char* asn1SeqValueObjectData = asnSeqValue->value.sequence->data;
|
|
returnCode = ASN1_get_object(&asn1SeqValueObjectData, &asn1SeqValueObjectLength, &asn1SeqValueObjectTag, &asn1SeqValueObjectClass, asnSeqValue->value.sequence->length);
|
|
if (!(returnCode & 0x80)) {
|
|
if (returnCode == (V_ASN1_CONSTRUCTED + index)) {
|
|
if (d2i_ASN1_GENERALSTRING(&asnGeneralString, &asn1SeqValueObjectData, asn1SeqValueObjectLength) != NULL) {
|
|
retString = TQString((const char *)ASN1_STRING_data(asnGeneralString));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Clean up
|
|
OBJ_cleanup();
|
|
|
|
return retString;
|
|
#else
|
|
return TQString::null;
|
|
#endif
|
|
}
|
|
|
|
void TDECryptographicCardDevice::workerRequestedPin(TQString prompt) {
|
|
emit(pinRequested(prompt, this));
|
|
}
|
|
|
|
int TDECryptographicCardDevice::decryptDataEncryptedWithCertPublicKey(TQByteArray &ciphertext, TQByteArray &plaintext, TQString *errstr) {
|
|
TQValueList<TQByteArray> cipherTextList;
|
|
TQValueList<TQByteArray> plainTextList;
|
|
TQValueList<int> retCodeList;
|
|
|
|
cipherTextList.append(ciphertext);
|
|
|
|
this->decryptDataEncryptedWithCertPublicKey(cipherTextList, plainTextList, retCodeList, errstr);
|
|
|
|
plaintext = plainTextList[0];
|
|
return retCodeList[0];
|
|
}
|
|
|
|
int TDECryptographicCardDevice::decryptDataEncryptedWithCertPublicKey(TQValueList<TQByteArray> &cipherTextList, TQValueList<TQByteArray> &plainTextList, TQValueList<int> &retcodes, TQString *errstr) {
|
|
#if defined(WITH_PKCS)
|
|
int ret = -1;
|
|
|
|
if (!m_watcherObject) {
|
|
if (errstr) *errstr = i18n("Card watcher object not available");
|
|
return -1;
|
|
}
|
|
|
|
CK_RV rv;
|
|
pkcs11h_certificate_id_list_t issuers;
|
|
pkcs11h_certificate_id_list_t certs;
|
|
|
|
if (m_watcherObject->initializePkcs() < 0) {
|
|
if (errstr) *errstr = i18n("Unable to initialize PKCS");
|
|
return -1;
|
|
}
|
|
|
|
rv = pkcs11h_certificate_enumCertificateIds(PKCS11H_ENUM_METHOD_CACHE, NULL, PKCS11H_PROMPT_MASK_ALLOW_PIN_PROMPT, &issuers, &certs);
|
|
if ((rv != CKR_OK) || (certs == NULL)) {
|
|
if (errstr) *errstr = i18n("Cannot enumerate certificates: %1").arg(pkcs11h_getMessage(rv));
|
|
return -1;
|
|
}
|
|
|
|
int i = 0;
|
|
for (pkcs11h_certificate_id_list_t cert = certs; cert != NULL; cert = cert->next) {
|
|
TQString label = cert->certificate_id->displayName;
|
|
|
|
pkcs11h_certificate_t certificate;
|
|
rv = pkcs11h_certificate_create(certs->certificate_id, NULL, PKCS11H_PROMPT_MASK_ALLOW_PIN_PROMPT, PKCS11H_PIN_CACHE_INFINITE, &certificate);
|
|
if (rv != CKR_OK) {
|
|
if (errstr) *errstr = i18n("Cannot read certificate: %1").arg(pkcs11h_getMessage(rv));
|
|
pkcs11h_certificate_freeCertificateId(certs->certificate_id);
|
|
ret = -1;
|
|
break;
|
|
}
|
|
|
|
pkcs11h_certificate_freeCertificateId(certs->certificate_id);
|
|
|
|
pkcs11h_openssl_session_t openssl_session = NULL;
|
|
if ((openssl_session = pkcs11h_openssl_createSession(certificate)) == NULL) {
|
|
if (errstr) *errstr = i18n("Cannot initialize openssl session to retrieve cryptographic objects");
|
|
pkcs11h_certificate_freeCertificate(certificate);
|
|
ret = -1;
|
|
break;
|
|
}
|
|
|
|
// Get certificate data
|
|
X509* x509_local;
|
|
x509_local = pkcs11h_openssl_session_getX509(openssl_session);
|
|
if (!x509_local) {
|
|
if (errstr) *errstr = i18n("Cannot get X509 object");
|
|
ret = -1;
|
|
}
|
|
|
|
// Extract public key from X509 certificate
|
|
EVP_PKEY* x509_pubkey = NULL;
|
|
RSA* rsa_pubkey = NULL;
|
|
x509_pubkey = X509_get_pubkey(x509_local);
|
|
if (x509_pubkey) {
|
|
rsa_pubkey = EVP_PKEY_get1_RSA(x509_pubkey);
|
|
}
|
|
|
|
// Check PIN
|
|
rv = pkcs11h_certificate_ensureKeyAccess(certificate);
|
|
if (rv != CKR_OK) {
|
|
if (rv == CKR_CANCEL) {
|
|
ret = -3;
|
|
break;
|
|
}
|
|
else if ((rv == CKR_PIN_INCORRECT) || (rv == CKR_USER_NOT_LOGGED_IN)) {
|
|
ret = -2;
|
|
break;
|
|
}
|
|
else {
|
|
ret = -2;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// We know the cached PIN is correct; disable any further login prompts
|
|
m_watcherObject->retrySamePin(true);
|
|
|
|
TQValueList<TQByteArray>::iterator it;
|
|
TQValueList<TQByteArray>::iterator it2;
|
|
TQValueList<int>::iterator it3;
|
|
plainTextList.clear();
|
|
retcodes.clear();
|
|
for (it = cipherTextList.begin(); it != cipherTextList.end(); ++it) {
|
|
plainTextList.append(TQByteArray());
|
|
retcodes.append(-1);
|
|
}
|
|
for (it = cipherTextList.begin(), it2 = plainTextList.begin(), it3 = retcodes.begin(); it != cipherTextList.end(); ++it, ++it2, ++it3) {
|
|
TQByteArray& ciphertext = *it;
|
|
TQByteArray& plaintext = *it2;
|
|
int& retcode = *it3;
|
|
|
|
// Verify minimum size
|
|
if (ciphertext.size() < 16) {
|
|
if (errstr) *errstr = i18n("Cannot decrypt: %1").arg(i18n("Ciphertext too small"));
|
|
ret = -2;
|
|
retcode = -2;
|
|
continue;
|
|
}
|
|
|
|
// Try to get RSA parameters and verify maximum size
|
|
if (rsa_pubkey) {
|
|
unsigned int rsa_length = RSA_size(rsa_pubkey);
|
|
if (ciphertext.size() > rsa_length) {
|
|
if (errstr) *errstr = i18n("Cannot decrypt: %1").arg(i18n("Ciphertext too large"));
|
|
ret = -2;
|
|
retcode = -2;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
size_t size = 0;
|
|
// Determine output buffer size
|
|
rv = pkcs11h_certificate_decryptAny(certificate, CKM_RSA_PKCS, (unsigned char*)ciphertext.data(), ciphertext.size(), NULL, &size);
|
|
if (rv != CKR_OK) {
|
|
if (errstr) *errstr = i18n("Cannot determine decrypted message length: %1 (%2)").arg(pkcs11h_getMessage(rv)).arg(rv);
|
|
if (rv == CKR_CANCEL) {
|
|
ret = -3;
|
|
retcode = -3;
|
|
break;
|
|
}
|
|
else if ((rv == CKR_PIN_INCORRECT) || (rv == CKR_USER_NOT_LOGGED_IN)) {
|
|
ret = -2;
|
|
retcode = -2;
|
|
break;
|
|
}
|
|
else {
|
|
ret = -2;
|
|
retcode = -2;
|
|
}
|
|
}
|
|
else {
|
|
// Decrypt data
|
|
plaintext.resize(size);
|
|
rv = pkcs11h_certificate_decryptAny(certificate, CKM_RSA_PKCS, (unsigned char*)ciphertext.data(), ciphertext.size(), (unsigned char*)plaintext.data(), &size);
|
|
if (rv != CKR_OK) {
|
|
if (errstr) *errstr = i18n("Cannot decrypt: %1 (%2)").arg(pkcs11h_getMessage(rv)).arg(rv);
|
|
if (rv == CKR_CANCEL) {
|
|
ret = -3;
|
|
retcode = -3;
|
|
break;
|
|
}
|
|
else if ((rv == CKR_PIN_INCORRECT) || (rv == CKR_USER_NOT_LOGGED_IN)) {
|
|
ret = -2;
|
|
retcode = -2;
|
|
break;
|
|
}
|
|
else {
|
|
ret = -2;
|
|
retcode = -2;
|
|
}
|
|
}
|
|
else {
|
|
if (errstr) *errstr = TQString::null;
|
|
ret = 0;
|
|
retcode = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
pkcs11h_openssl_freeSession(openssl_session);
|
|
|
|
// Only interested in first certificate for now
|
|
// FIXME
|
|
// If cards with multiple certificates are used this should be modified to try decryption
|
|
// using each certificate in turn...
|
|
break;
|
|
|
|
i++;
|
|
}
|
|
pkcs11h_certificate_freeCertificateIdList(issuers);
|
|
|
|
// Restore normal login attempt method
|
|
m_watcherObject->retrySamePin(false);
|
|
|
|
return ret;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
}
|
|
|
|
int TDECryptographicCardDevice::createNewSecretRSAKeyFromCertificate(TQByteArray &plaintext, TQByteArray &ciphertext, X509* certificate) {
|
|
#if defined(WITH_PKCS)
|
|
unsigned int i;
|
|
int retcode = -1;
|
|
|
|
// Extract public key from X509 certificate
|
|
EVP_PKEY* x509_pubkey = NULL;
|
|
RSA* rsa_pubkey = NULL;
|
|
x509_pubkey = X509_get_pubkey(certificate);
|
|
if (x509_pubkey) {
|
|
rsa_pubkey = EVP_PKEY_get1_RSA(x509_pubkey);
|
|
}
|
|
|
|
if (rsa_pubkey) {
|
|
// Determine encryption parameters
|
|
// NOTE
|
|
// RSA_PKCS1_OAEP_PADDING is preferred but cannot be decoded from
|
|
// the command line via openssl at this time of this writing.
|
|
int rsa_padding_style = RSA_PKCS1_PADDING;
|
|
unsigned int rsa_length = RSA_size(rsa_pubkey);
|
|
unsigned int max_key_length = rsa_length - 41;
|
|
|
|
// Create a new random key as the plaintext
|
|
plaintext.resize(max_key_length);
|
|
for (i=0; i < max_key_length; i++) {
|
|
plaintext[i] = TDEApplication::random();
|
|
}
|
|
|
|
// Encrypt data
|
|
ciphertext.resize(rsa_length);
|
|
if (RSA_public_encrypt(plaintext.size(), (unsigned char *)plaintext.data(), (unsigned char *)ciphertext.data(), rsa_pubkey, rsa_padding_style) < 0) {
|
|
retcode = -2;
|
|
}
|
|
|
|
// Success!
|
|
retcode = 0;
|
|
}
|
|
|
|
// Clean up
|
|
if (rsa_pubkey) {
|
|
RSA_free(rsa_pubkey);
|
|
}
|
|
if (x509_pubkey) {
|
|
EVP_PKEY_free(x509_pubkey);
|
|
}
|
|
|
|
return retcode;
|
|
#else
|
|
return -1;
|
|
#endif
|
|
}
|
|
|
|
TQString TDECryptographicCardDevice::pkcsProviderLibrary() {
|
|
#if defined(WITH_PKCS)
|
|
return OPENSC_PKCS11_PROVIDER_LIBRARY;
|
|
#else
|
|
return TQString::null;
|
|
#endif
|
|
}
|
|
|
|
#include "tdecryptographiccarddevice.moc"
|
|
#include "tdecryptographiccarddevice_private.moc"
|