diff options
Diffstat (limited to 'src/corelib/tools/qmessageauthenticationcode.cpp')
| -rw-r--r-- | src/corelib/tools/qmessageauthenticationcode.cpp | 283 |
1 files changed, 0 insertions, 283 deletions
diff --git a/src/corelib/tools/qmessageauthenticationcode.cpp b/src/corelib/tools/qmessageauthenticationcode.cpp deleted file mode 100644 index 767a7a14d4..0000000000 --- a/src/corelib/tools/qmessageauthenticationcode.cpp +++ /dev/null @@ -1,283 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2013 Ruslan Nigmatullin <euroelessar@yandex.ru> -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtCore module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qmessageauthenticationcode.h" -#include "qvarlengtharray.h" - -#include "qtcore-config_p.h" - -// Header from rfc6234 -#include "../../3rdparty/rfc6234/sha.h" - -#if QT_CONFIG(system_libb2) -#include <blake2.h> -#else -#include "../../3rdparty/blake2/src/blake2.h" -#endif - -QT_BEGIN_NAMESPACE - -static int qt_hash_block_size(QCryptographicHash::Algorithm method) -{ - switch (method) { - case QCryptographicHash::Md4: - return 64; - case QCryptographicHash::Md5: - return 64; - case QCryptographicHash::Sha1: - return SHA1_Message_Block_Size; - case QCryptographicHash::Sha224: - return SHA224_Message_Block_Size; - case QCryptographicHash::Sha256: - return SHA256_Message_Block_Size; - case QCryptographicHash::Sha384: - return SHA384_Message_Block_Size; - case QCryptographicHash::Sha512: - return SHA512_Message_Block_Size; - case QCryptographicHash::RealSha3_224: - case QCryptographicHash::Keccak_224: - return 144; - case QCryptographicHash::RealSha3_256: - case QCryptographicHash::Keccak_256: - return 136; - case QCryptographicHash::RealSha3_384: - case QCryptographicHash::Keccak_384: - return 104; - case QCryptographicHash::RealSha3_512: - case QCryptographicHash::Keccak_512: - return 72; - case QCryptographicHash::Blake2b_160: - case QCryptographicHash::Blake2b_256: - case QCryptographicHash::Blake2b_384: - case QCryptographicHash::Blake2b_512: - return BLAKE2B_BLOCKBYTES; - case QCryptographicHash::Blake2s_128: - case QCryptographicHash::Blake2s_160: - case QCryptographicHash::Blake2s_224: - case QCryptographicHash::Blake2s_256: - return BLAKE2S_BLOCKBYTES; - } - return 0; -} - -class QMessageAuthenticationCodePrivate -{ -public: - QMessageAuthenticationCodePrivate(QCryptographicHash::Algorithm m) - : messageHash(m), method(m), messageHashInited(false) - { - } - - QByteArray key; - QByteArray result; - QCryptographicHash messageHash; - QCryptographicHash::Algorithm method; - bool messageHashInited; - - void initMessageHash(); -}; - -void QMessageAuthenticationCodePrivate::initMessageHash() -{ - if (messageHashInited) - return; - messageHashInited = true; - - const int blockSize = qt_hash_block_size(method); - - if (key.size() > blockSize) { - key = QCryptographicHash::hash(key, method); - } - - if (key.size() < blockSize) { - const int size = key.size(); - key.resize(blockSize); - memset(key.data() + size, 0, blockSize - size); - } - - QVarLengthArray<char> iKeyPad(blockSize); - const char * const keyData = key.constData(); - - for (int i = 0; i < blockSize; ++i) - iKeyPad[i] = keyData[i] ^ 0x36; - - messageHash.addData(iKeyPad); -} - -/*! - \class QMessageAuthenticationCode - \inmodule QtCore - - \brief The QMessageAuthenticationCode class provides a way to generate - hash-based message authentication codes. - - \since 5.1 - - \ingroup tools - \reentrant - - QMessageAuthenticationCode supports all cryptographic hashes which are supported by - QCryptographicHash. - - To generate message authentication code, pass hash algorithm QCryptographicHash::Algorithm - to constructor, then set key and message by setKey() and addData() functions. Result - can be acquired by result() function. - \snippet qmessageauthenticationcode/main.cpp 0 - \dots - \snippet qmessageauthenticationcode/main.cpp 1 - - Alternatively, this effect can be achieved by providing message, - key and method to hash() method. - \snippet qmessageauthenticationcode/main.cpp 2 - - \sa QCryptographicHash -*/ - -/*! - Constructs an object that can be used to create a cryptographic hash from data - using method \a method and key \a key. -*/ -QMessageAuthenticationCode::QMessageAuthenticationCode(QCryptographicHash::Algorithm method, - const QByteArray &key) - : d(new QMessageAuthenticationCodePrivate(method)) -{ - d->key = key; -} - -/*! - Destroys the object. -*/ -QMessageAuthenticationCode::~QMessageAuthenticationCode() -{ - delete d; -} - -/*! - Resets message data. Calling this method doesn't affect the key. -*/ -void QMessageAuthenticationCode::reset() -{ - d->result.clear(); - d->messageHash.reset(); - d->messageHashInited = false; -} - -/*! - Sets secret \a key. Calling this method automatically resets the object state. -*/ -void QMessageAuthenticationCode::setKey(const QByteArray &key) -{ - reset(); - d->key = key; -} - -/*! - Adds the first \a length chars of \a data to the message. -*/ -void QMessageAuthenticationCode::addData(const char *data, qsizetype length) -{ - d->initMessageHash(); - d->messageHash.addData({data, length}); -} - -/*! - \overload addData() -*/ -void QMessageAuthenticationCode::addData(const QByteArray &data) -{ - d->initMessageHash(); - d->messageHash.addData(data); -} - -/*! - Reads the data from the open QIODevice \a device until it ends - and adds it to message. Returns \c true if reading was successful. - - \note \a device must be already opened. - */ -bool QMessageAuthenticationCode::addData(QIODevice *device) -{ - d->initMessageHash(); - return d->messageHash.addData(device); -} - -/*! - Returns the final authentication code. - - \sa QByteArray::toHex() -*/ -QByteArray QMessageAuthenticationCode::result() const -{ - if (!d->result.isEmpty()) - return d->result; - - d->initMessageHash(); - - const int blockSize = qt_hash_block_size(d->method); - - QByteArrayView hashedMessage = d->messageHash.resultView(); - - QVarLengthArray<char> oKeyPad(blockSize); - const char * const keyData = d->key.constData(); - - for (int i = 0; i < blockSize; ++i) - oKeyPad[i] = keyData[i] ^ 0x5c; - - QCryptographicHash hash(d->method); - hash.addData(oKeyPad); - hash.addData(hashedMessage); - - d->result = hash.result(); - return d->result; -} - -/*! - Returns the authentication code for the message \a message using - the key \a key and the method \a method. -*/ -QByteArray QMessageAuthenticationCode::hash(const QByteArray &message, const QByteArray &key, - QCryptographicHash::Algorithm method) -{ - QMessageAuthenticationCode mac(method); - mac.setKey(key); - mac.addData(message); - return mac.result(); -} - -QT_END_NAMESPACE |