88 lines
3.6 KiB
C
88 lines
3.6 KiB
C
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/***************************************************************************
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** **
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** QKeccakHash, an API wrapper bringing the optimized implementation of **
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** Keccak (http://keccak.noekeon.org/) to Qt. **
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** Copyright (C) 2012 Emanuel Eichhammer **
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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 3 of the License, or **
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** (at your option) any later version. **
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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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****************************************************************************
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** Author: Emanuel Eichhammer **
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** Website/Contact: http://www.WorksLikeClockwork.com/ **
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** Date: 12.01.12 **
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****************************************************************************/
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#ifndef QKECCAKHASH_H
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#define QKECCAKHASH_H
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#include <QString>
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#include <QByteArray>
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#include <QFile>
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// Section from KeccakSponge.h
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// needed here, since hashState needs to be explicitly 32-byte aligned and therefore can't be
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// transformed into a class (in order to forward declarate) like in the other hash wrappers.
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namespace KeccakImpl {
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#define KeccakPermutationSize 1600
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#define KeccakPermutationSizeInBytes (KeccakPermutationSize/8)
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#define KeccakMaximumRate 1536
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#define KeccakMaximumRateInBytes (KeccakMaximumRate/8)
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#if defined(__GNUC__)
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#define ALIGN __attribute__ ((aligned(32)))
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#elif defined(_MSC_VER)
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#define ALIGN __declspec(align(32))
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#else
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#define ALIGN
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#endif
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ALIGN typedef struct spongeStateStruct {
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ALIGN unsigned char state[KeccakPermutationSizeInBytes];
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ALIGN unsigned char dataQueue[KeccakMaximumRateInBytes];
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unsigned int rate;
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unsigned int capacity;
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unsigned int bitsInQueue;
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unsigned int fixedOutputLength;
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int squeezing;
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unsigned int bitsAvailableForSqueezing;
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} spongeState;
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typedef spongeState hashState;
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}
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// End Section from KeccakSponge.h
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class QKeccakHash
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{
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public:
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enum HashBits {hb224, hb256, hb384, hb512};
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QKeccakHash();
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QKeccakHash(const QString &asciiMessage, HashBits hashBits=hb256);
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~QKeccakHash();
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QByteArray toRaw() const;
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QByteArray toHex() const;
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QString toHexString() const;
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bool file(const QString &fileName, HashBits hashBits=hb256, int blockSize=8388608); // 8 KiB default blockSize
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bool startBatch(HashBits hashBits=hb256);
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bool putBatch(const QByteArray &ba);
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bool putBatch(const char *data, int size);
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bool stopBatch();
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bool isBatchRunning() const;
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protected:
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bool setHashBitLength(HashBits hashBits);
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KeccakImpl::hashState *mState;
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QByteArray mHashResult;
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int mHashBitLength;
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};
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#endif // QKECCAKHASH_H
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