void EditDialog::generate_password(int count, bool capital, bool small, bool digits)
{
qsrand(QDateTime::currentMSecsSinceEpoch());
int remain = count;
QString password;
while(remain > 0) {
QByteArray sampleArray;
for(int i = 0; i < 256; i++) {
sampleArray.append((char)(qrand() % 256));
}
QByteArray destArray = QCryptographicHash::hash(sampleArray, QCryptographicHash::Md5).toBase64();
for(auto iter = destArray.cbegin(); iter != destArray.cend(); iter++) {
char c = *iter;
if((capital && c >= 'A' && c <= 'Z') ||
(small && c >= 'a' && c <= 'z') ||
(digits && c >= '0' && c <= '9')) {
password.append(c);
remain--;
if(remain == 0) break;
}
}
}
ui->passwordEdit->setText(password);
ui->passwordAgainEdit->setText(password);
}
static QByteArray deriveKeyPbkdf2(QCryptographicHash::Algorithm algorithm,
const QByteArray &data, const QByteArray &salt,
int iterations, quint64 dkLen)
{
QByteArray key;
quint32 currentIteration = 1;
QMessageAuthenticationCode hmac(algorithm, data);
QByteArray index(4, Qt::Uninitialized);
while (quint64(key.length()) < dkLen) {
hmac.addData(salt);
qToBigEndian(currentIteration, reinterpret_cast<uchar*>(index.data()));
hmac.addData(index);
QByteArray u = hmac.result();
hmac.reset();
QByteArray tkey = u;
for (int iter = 1; iter < iterations; iter++) {
hmac.addData(u);
u = hmac.result();
hmac.reset();
std::transform(tkey.cbegin(), tkey.cend(), u.cbegin(), tkey.begin(),
std::bit_xor<char>());
}
key += tkey;
currentIteration++;
}
return key.left(dkLen);
}
bool QXmppSaslClientScram::respond(const QByteArray &challenge, QByteArray &response)
{
Q_UNUSED(challenge);
if (m_step == 0) {
m_gs2Header = "n,,";
m_clientFirstMessageBare = "n=" + username().toUtf8() + ",r=" + m_nonce;
response = m_gs2Header + m_clientFirstMessageBare;
m_step++;
return true;
} else if (m_step == 1) {
// validate input
const QMap<char, QByteArray> input = parseGS2(challenge);
const QByteArray nonce = input.value('r');
const QByteArray salt = QByteArray::fromBase64(input.value('s'));
const int iterations = input.value('i').toInt();
if (!nonce.startsWith(m_nonce) || salt.isEmpty() || iterations < 1) {
return false;
}
// calculate proofs
const QByteArray clientFinalMessageBare = "c=" + m_gs2Header.toBase64() + ",r=" + nonce;
const QByteArray saltedPassword = deriveKeyPbkdf2(m_algorithm, password().toUtf8(), salt,
iterations, m_dklen);
const QByteArray clientKey = QMessageAuthenticationCode::hash("Client Key", saltedPassword, m_algorithm);
const QByteArray storedKey = QCryptographicHash::hash(clientKey, m_algorithm);
const QByteArray authMessage = m_clientFirstMessageBare + "," + challenge + "," + clientFinalMessageBare;
QByteArray clientProof = QMessageAuthenticationCode::hash(authMessage, storedKey, m_algorithm);
std::transform(clientProof.cbegin(), clientProof.cend(), clientKey.cbegin(),
clientProof.begin(), std::bit_xor<char>());
const QByteArray serverKey = QMessageAuthenticationCode::hash("Server Key", saltedPassword, m_algorithm);
m_serverSignature = QMessageAuthenticationCode::hash(authMessage, serverKey, m_algorithm);
response = clientFinalMessageBare + ",p=" + clientProof.toBase64();
m_step++;
return true;
} else if (m_step == 2) {
const QMap<char, QByteArray> input = parseGS2(challenge);
response = QByteArray();
m_step++;
return QByteArray::fromBase64(input.value('v')) == m_serverSignature;
} else {
warning("QXmppSaslClientPlain : Invalid step");
return false;
}
}
std::function<bool(u32)> CheatsManager::CreateMatchFunction()
{
const QString text = m_match_value->text();
if (text.isEmpty())
{
m_result_label->setText(tr("No search value entered."));
return nullptr;
}
const CompareType op = static_cast<CompareType>(m_match_operation->currentIndex());
const int base =
(m_match_decimal->isChecked() ? 10 : (m_match_hexadecimal->isChecked() ? 16 : 8));
bool conversion_succeeded = false;
std::function<bool(u32)> matches_func;
switch (static_cast<DataType>(m_match_length->currentIndex()))
{
case DataType::Byte:
{
u8 comparison_value = text.toUShort(&conversion_succeeded, base) & 0xFF;
matches_func = [=](u32 addr) {
return Compare<u8>(PowerPC::HostRead_U8(addr), comparison_value, op);
};
break;
}
case DataType::Short:
{
u16 comparison_value = text.toUShort(&conversion_succeeded, base);
matches_func = [=](u32 addr) {
return Compare(PowerPC::HostRead_U16(addr), comparison_value, op);
};
break;
}
case DataType::Int:
{
u32 comparison_value = text.toUInt(&conversion_succeeded, base);
matches_func = [=](u32 addr) {
return Compare(PowerPC::HostRead_U32(addr), comparison_value, op);
};
break;
}
case DataType::Float:
{
float comparison_value = text.toFloat(&conversion_succeeded);
matches_func = [=](u32 addr) {
return Compare(PowerPC::HostRead_F32(addr), comparison_value, op);
};
break;
}
case DataType::Double:
{
double comparison_value = text.toDouble(&conversion_succeeded);
matches_func = [=](u32 addr) {
return Compare(PowerPC::HostRead_F64(addr), comparison_value, op);
};
break;
}
case DataType::String:
{
if (op != CompareType::Equal && op != CompareType::NotEqual)
{
m_result_label->setText(tr("String values can only be compared using equality."));
return nullptr;
}
conversion_succeeded = true;
const QString lambda_text = m_match_value->text();
const QByteArray utf8_bytes = lambda_text.toUtf8();
matches_func = [op, utf8_bytes](u32 addr) {
bool is_equal = std::equal(utf8_bytes.cbegin(), utf8_bytes.cend(),
reinterpret_cast<char*>(Memory::m_pRAM + addr - 0x80000000));
switch (op)
{
case CompareType::Equal:
return is_equal;
case CompareType::NotEqual:
return !is_equal;
default:
// This should never occur since we've already checked the type of op
return false;
}
};
break;
}
}
if (conversion_succeeded)
return matches_func;
m_result_label->setText(tr("Cannot interpret the given value.\nHave you chosen the right type?"));
return nullptr;
}
std::string KulloClient2Qt::fromUtf8(const QByteArray &in)
{
return std::string(in.cbegin(), in.cend());
}