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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
**
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
**
**************************************************************************/
#include "sshkeygenerator.h"
#include "sshbotanconversions_p.h"
#include "sshcapabilities_p.h"
#include "sshpacket_p.h"
#include <botan/auto_rng.h>
#include <botan/bigint.h>
#include <botan/der_enc.h>
#include <botan/dsa.h>
#include <botan/pem.h>
#include <botan/pkcs8.h>
#include <botan/rsa.h>
#include <botan/x509_key.h>
#include <QtCore/QDateTime>
namespace Core {
using namespace Botan;
using namespace Internal;
SshKeyGenerator::SshKeyGenerator() { }
bool SshKeyGenerator::generateKeys(KeyType type, PrivateKeyFormat format,
int keySize)
{
try {
AutoSeeded_RNG rng;
KeyPtr key;
if (type == Rsa)
key = KeyPtr(new RSA_PrivateKey(rng, keySize));
else
key = KeyPtr(new DSA_PrivateKey(rng, DL_Group(rng, DL_Group::Strong,
keySize)));
return format == Pkcs8
? generatePkcs8Keys(key) : generateOpenSslKeys(key, type);
} catch (Botan::Exception &e) {
m_error = tr("Error generating key: %1").arg(e.what());
return false;
}
}
bool SshKeyGenerator::generatePkcs8Keys(const KeyPtr &key)
{
generatePkcs8Key(key, false);
generatePkcs8Key(key, true);
return true;
}
void SshKeyGenerator::generatePkcs8Key(const KeyPtr &key, bool privateKey)
{
Pipe pipe;
pipe.start_msg();
QByteArray *keyData;
if (privateKey) {
PKCS8::encode(*key, pipe);
keyData = &m_privateKey;
} else {
X509::encode(*key, pipe);
keyData = &m_publicKey;
}
pipe.end_msg();
keyData->resize(pipe.remaining(pipe.message_count() - 1));
pipe.read(convertByteArray(*keyData), keyData->size(),
pipe.message_count() - 1);
}
bool SshKeyGenerator::generateOpenSslKeys(const KeyPtr &key, KeyType type)
{
QList<BigInt> publicParams;
QList<BigInt> allParams;
QByteArray keyId;
if (type == Rsa) {
const QSharedPointer<RSA_PrivateKey> rsaKey
= key.dynamicCast<RSA_PrivateKey>();
publicParams << rsaKey->get_e() << rsaKey->get_n();
allParams << rsaKey->get_n() << rsaKey->get_e() << rsaKey->get_d()
<< rsaKey->get_p() << rsaKey->get_q();
keyId = SshCapabilities::PubKeyRsa;
} else {
const QSharedPointer<DSA_PrivateKey> dsaKey
= key.dynamicCast<DSA_PrivateKey>();
publicParams << dsaKey->group_p() << dsaKey->group_q()
<< dsaKey->group_g() << dsaKey->get_y();
allParams << publicParams << dsaKey->get_x();
keyId = SshCapabilities::PubKeyDss;
}
QByteArray publicKeyBlob = AbstractSshPacket::encodeString(keyId);
foreach (const BigInt &b, publicParams)
publicKeyBlob += AbstractSshPacket::encodeMpInt(b);
publicKeyBlob = publicKeyBlob.toBase64();
const QByteArray id = "QtCreator/"
+ QDateTime::currentDateTime().toString(Qt::ISODate).toUtf8();
m_publicKey = keyId + ' ' + publicKeyBlob + ' ' + id;
DER_Encoder encoder;
encoder.start_cons(SEQUENCE).encode (0U);
foreach (const BigInt &b, allParams)
encoder.encode(b);
encoder.end_cons();
const char * const label
= type == Rsa ? "RSA PRIVATE KEY" : "DSA PRIVATE KEY";
m_privateKey
= QByteArray(PEM_Code::encode (encoder.get_contents(), label).c_str());
return true;
}
} // namespace Core
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