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moved new crypto stuff into io library, since it inherits CStreamFilter

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This commit is contained in:
Nick Bolton 2013-05-30 13:48:08 +00:00
parent e05a9dfa98
commit f4f7f69b3f
13 changed files with 36 additions and 29 deletions
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219
src/lib/io/CCryptoMode.cpp Normal file
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/*
* synergy -- mouse and keyboard sharing utility
* Copyright (C) 2013 Bolton Software Ltd.
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file COPYING that should have accompanied this file.
*
* This package 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "CCryptoMode.h"
#include "XIO.h"
using namespace CryptoPP;
CCryptoMode::CCryptoMode(ECryptoMode mode, bool encryption) :
m_mode(mode),
m_crypto(NULL),
m_encryption(encryption)
{
if (m_encryption) {
switch (m_mode) {
case kOfb:
m_crypto = new COfbModeEnc;
break;
case kCfb:
m_crypto = new CCfbModeEnc;
break;
case kCtr:
m_crypto = new CCtrModeEnc;
break;
case kGcm:
m_crypto = new CGcmModeEnc;
break;
case kDisabled:
break;
default:
throw XIOBadCryptoMode();
}
}
else {
switch (m_mode) {
case kOfb:
m_crypto = new COfbModeDec;
break;
case kCfb:
m_crypto = new CCfbModeDec;
break;
case kCtr:
m_crypto = new CCtrModeDec;
break;
case kGcm:
m_crypto = new CGcmModeDec;
break;
case kDisabled:
break;
default:
throw XIOBadCryptoMode();
}
}
}
CCryptoMode::~CCryptoMode()
{
if (m_crypto == NULL) {
return;
}
if (m_encryption) {
switch (m_mode) {
case kOfb:
delete reinterpret_cast<COfbModeEnc*>(m_crypto);
break;
case kCfb:
delete reinterpret_cast<CCfbModeEnc*>(m_crypto);
break;
case kCtr:
delete reinterpret_cast<CCtrModeEnc*>(m_crypto);
break;
case kGcm:
delete reinterpret_cast<CGcmModeEnc*>(m_crypto);
break;
}
}
else {
switch (m_mode) {
case kOfb:
delete reinterpret_cast<COfbModeDec*>(m_crypto);
break;
case kCfb:
delete reinterpret_cast<CCfbModeDec*>(m_crypto);
break;
case kCtr:
delete reinterpret_cast<CCtrModeDec*>(m_crypto);
break;
case kGcm:
delete reinterpret_cast<CGcmModeDec*>(m_crypto);
break;
}
}
}
void
CCryptoMode::processData(byte* out, const byte* in, size_t length)
{
if (m_crypto == NULL) {
return;
}
if (m_encryption) {
switch (m_mode) {
case kOfb:
reinterpret_cast<COfbModeEnc*>(m_crypto)->ProcessData(out, in, length);
break;
case kCfb:
reinterpret_cast<CCfbModeEnc*>(m_crypto)->ProcessData(out, in, length);
break;
case kCtr:
reinterpret_cast<CCtrModeEnc*>(m_crypto)->ProcessData(out, in, length);
break;
case kGcm:
reinterpret_cast<CGcmModeEnc*>(m_crypto)->ProcessData(out, in, length);
break;
}
}
else {
switch (m_mode) {
case kOfb:
reinterpret_cast<COfbModeDec*>(m_crypto)->ProcessData(out, in, length);
break;
case kCfb:
reinterpret_cast<CCfbModeDec*>(m_crypto)->ProcessData(out, in, length);
break;
case kCtr:
reinterpret_cast<CCtrModeDec*>(m_crypto)->ProcessData(out, in, length);
break;
case kGcm:
reinterpret_cast<CGcmModeDec*>(m_crypto)->ProcessData(out, in, length);
break;
}
}
}
void
CCryptoMode::setKeyWithIv(const byte* key, size_t length, const byte* iv)
{
if (m_crypto == NULL) {
return;
}
if (m_encryption) {
switch (m_mode) {
case kOfb:
reinterpret_cast<COfbModeEnc*>(m_crypto)->SetKeyWithIV(key, length, iv);
break;
case kCfb:
reinterpret_cast<CCfbModeEnc*>(m_crypto)->SetKeyWithIV(key, length, iv);
break;
case kCtr:
reinterpret_cast<CCtrModeEnc*>(m_crypto)->SetKeyWithIV(key, length, iv);
break;
case kGcm:
reinterpret_cast<CGcmModeEnc*>(m_crypto)->SetKeyWithIV(key, length, iv);
break;
}
}
else {
switch (m_mode) {
case kOfb:
reinterpret_cast<COfbModeDec*>(m_crypto)->SetKeyWithIV(key, length, iv);
break;
case kCfb:
reinterpret_cast<CCfbModeDec*>(m_crypto)->SetKeyWithIV(key, length, iv);
break;
case kCtr:
reinterpret_cast<CCtrModeDec*>(m_crypto)->SetKeyWithIV(key, length, iv);
break;
case kGcm:
reinterpret_cast<CGcmModeDec*>(m_crypto)->SetKeyWithIV(key, length, iv);
break;
}
}
}