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/*********************************************************************************
NixNote - An open-source client for the Evernote service.
Copyright (C) 2013 Randy Baumgarte
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program 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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
***********************************************************************************/
#include "encrypt.h"
#include <QString>
#include <algorithm>
#include <stdexcept>
#include "global.h"
#include <QCryptographicHash>
extern Global global;
//#define MY_CIPHER_MODE EVP_rc2_cbc() // RC2 CBC mode
using namespace std;
EnCrypt::EnCrypt()
{
}
int EnCrypt::decrypt(QString &result, QString text, QString passphrase) {
return decrypt(result, text, passphrase, "RC2", 64);
}
int EnCrypt::decrypt(QString &result, QString text, QString passphrase, QString cipher, int length) {
if (cipher == "RC2")
return this->runner(result, text, passphrase, "decrypt-rc2", length);
return this->Invaid_Method;
}
int EnCrypt::encrypt(QString &result, QString text, QString passphrase) {
return encrypt(result, text, passphrase, "RC2", 64);
}
int EnCrypt::encrypt(QString &result, QString text, QString passphrase, QString cipher, int length) {
if (cipher == "RC2")
return this->runner(result, text, passphrase, "encrypt-rc2", length);
return this->Invaid_Method;
}
int EnCrypt::runner(QString &result, QString text, QString passphrase, QString method, int keylen) {
// Run the Java program to decrypt the text. This is an extremely ugly
// hack, but I haven't been able to get anything else to work.
QString jar = global.fileManager.getJavaDirPath("") + "crypto.jar";
QProcess javaProcess;
QStringList args;
args.append("-jar");
args.append(jar);
args.append(method);
args.append(passphrase);
args.append(QString::number(keylen));
args.append(text);
javaProcess.start("java", args);
result.clear();
javaProcess.waitForFinished();
int rc = javaProcess.exitCode();
QLOG_DEBUG() << "Return Code: " << rc;
if (rc == 0)
result.append(javaProcess.readAllStandardOutput());
return rc;
// tidyProcess.start("tidy -raw -asxhtml -q -m -u -utf8 ", QIODevice::ReadWrite|QIODevice::Unbuffered);
// QLOG_DEBUG() << "Starting tidy " << tidyProcess.waitForStarted();
// tidyProcess.waitForStarted();
// tidyProcess.write(content);
// tidyProcess.closeWriteChannel();
// tidyProcess.waitForFinished();
// QLOG_DEBUG() << "Stopping tidy " << tidyProcess.waitForFinished() << " Return Code: " << tidyProcess.state();
// QLOG_DEBUG() << "Tidy Errors:" << tidyProcess.readAllStandardError();
// content.clear();
// content.append(tidyProcess.readAllStandardOutput());
// if (content == "") {
// formattingError = true;
// return "";
// }
// Below is a botan test
// QByteArray hash = QCryptographicHash::hash(passphrase.toUtf8(),QCryptographicHash::Md5);
// SymmetricKey key;
// key.change(QString(hash.toHex()).toStdString());
// qDebug() << "Key:" << QString::fromStdString(key.as_string());
// try {
// Keyed_Filter *cipher = get_cipher("RC2/ECB/NoPadding", DECRYPTION);
// cipher->set_key(key);
// Pipe pipe(new Base64_Decoder, cipher);
// byte *in = (byte*)text.data();
// QLOG_DEBUG() << text.length();
// pipe.process_msg(in, text.length());
// SecureVector<byte> sv = pipe.read_all();
// QByteArray x1 = QByteArray::fromRawData((const char*)sv.begin(), sv.size());
// QLOG_DEBUG() << x1;
// QLOG_DEBUG() << x1.toHex();
// QLOG_DEBUG() << x1.toBase64();
// QLOG_DEBUG() << QByteArray::fromBase64(x1);
// QLOG_DEBUG() << "ptr";
// } catch(std::exception& ex) {
// QLOG_DEBUG() << "Decrypt failed: " << QString(ex.what());
// }
// return "";
// Below is an mcrypt trial
// QLOG_DEBUG() << text;
// QLOG_DEBUG() << hash.toHex();
// MCRYPT td;
// int i;
// void *key;
// char *block_buffer;
// int keysize=hash.length();
// int blocksize;
// key = calloc(1, keysize);
// memcpy(key, hash.data(), hash.length());
// char cypher[] = "rc2";
// char block[] = "ecb";
// td = mcrypt_module_open(cypher, NULL, block, NULL);
// if (td == MCRYPT_FAILED)
// return "";
// QByteArray ba;
// ba.append(text);
// ba = QByteArray::fromBase64(ba);
// blocksize = mcrypt_enc_get_block_size(td);
// block_buffer = (char *)malloc(ba.size()*blocksize);
// memset(block_buffer, '\0', ba.size()*blocksize);
// memcpy(block_buffer, ba.data(), ba.length());
// qDebug() << block_buffer;
// i=mcrypt_generic_init(td, key, keysize, NULL);
// if (i<0) {
// mcrypt_perror(i);
// return "";
// }
// //mcrypt_generic (td, &block_buffer, 1);
// int rc = mdecrypt_generic(td, block_buffer, ba.length());
// QLOG_DEBUG() << rc;
// /* Deinit the encryption thread, and unload the module */
// mcrypt_generic_end(td);
// QByteArray ba3;
// ba3.append(block_buffer, ba.size()*blocksize);
// QLOG_DEBUG() << ba3.toHex();
// QLOG_DEBUG() << QByteArray::fromBase64(ba3);
// return "";
}
//QByteArray EnCrypt::CRC32(QByteArray ba) {
// boost::crc_32_type result;
// result.process_bytes(ba.constData(), ba.size());
// qulonglong crc = result.checksum();
// QByteArray rc;
// rc.setNum(crc,16);
// return rc.mid(0,4).toUpper();
//}
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