mirror of
https://github.com/keepassxreboot/keepassxc.git
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eca9c658f4
* Add source folder keeshare for sharing with corresponding define WITH_XC_KEESHARE * Move common crypto parts to src/crypto/ssh * Extended OpenSSHKey * Move filewatching to own file (currently in two related classes DelayedFileWatcher and BulkFileWatcher) * Small improvements for style and code in several classes * Sharing is secured using RSA-Keys which are generated on demand * Publisher signs the container using their private key * Client can verify the signed container and choose to decline an import, import only once or trust the publisher and automatically import all data of this source henceforth * Integration of settings into Group-Settings, Database-Settings and Application-Settings * Introduced dependency QuaZip as dependency to allow combined export of key container and the (custom format) certificate
103 lines
2.2 KiB
C++
103 lines
2.2 KiB
C++
/*
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* Copyright (C) 2010 Felix Geyer <debfx@fobos.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 or (at your option)
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* version 3 of the License.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "Random.h"
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#include <gcrypt.h>
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#include "core/Global.h"
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#include "crypto/Crypto.h"
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class RandomBackendGcrypt : public RandomBackend
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{
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public:
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void randomize(void* data, int len) override;
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};
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QSharedPointer<Random> Random::m_instance;
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void Random::randomize(QByteArray& ba)
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{
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m_backend->randomize(ba.data(), ba.size());
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}
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QByteArray Random::randomArray(int len)
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{
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QByteArray ba;
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ba.resize(len);
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randomize(ba);
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return ba;
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}
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quint32 Random::randomUInt(quint32 limit)
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{
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Q_ASSERT(limit != 0);
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Q_ASSERT(limit <= QUINT32_MAX);
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quint32 rand;
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const quint32 ceil = QUINT32_MAX - (QUINT32_MAX % limit) - 1;
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// To avoid modulo bias:
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// Make sure rand is below the largest number where rand%limit==0
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do {
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m_backend->randomize(&rand, 4);
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} while (rand > ceil);
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return (rand % limit);
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}
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quint32 Random::randomUIntRange(quint32 min, quint32 max)
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{
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return min + randomUInt(max - min);
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}
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Random* Random::instance()
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{
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if (!m_instance) {
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m_instance.reset(new Random(new RandomBackendGcrypt()));
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}
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return m_instance.data();
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}
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void Random::resetInstance()
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{
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m_instance.reset();
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}
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void Random::setInstance(RandomBackend* backend)
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{
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m_instance.reset(new Random(backend));
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}
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Random::Random(RandomBackend* backend)
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: m_backend(backend)
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{
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}
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void RandomBackendGcrypt::randomize(void* data, int len)
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{
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Q_ASSERT(Crypto::initalized());
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gcry_randomize(data, len, GCRY_STRONG_RANDOM);
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}
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RandomBackend::~RandomBackend()
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{
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}
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