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Use accelerated hashing for verification

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Modern CPUs have special instructions to accelerate computing
SHA hashes.
The Qt QCryptographicHash code is standard C, so not taking
advantage of those though.
Outsource the hashing to OpenSSL that does.

Shaves off some seconds during verification stage.
This commit is contained in:
Floris Bos 2020-05-23 17:50:59 +02:00
parent 2c5432fe7f
commit 8048b5e47c
6 changed files with 73 additions and 7 deletions
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25
acceleratedcryptographichash.h Normal file
View file

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#ifndef ACCELERATEDCRYPTOGRAPHICHASH_H
#define ACCELERATEDCRYPTOGRAPHICHASH_H
/*
* SPDX-License-Identifier: Apache-2.0
* Copyright (C) 2020 Raspberry Pi (Trading) Limited
*/
#include <QCryptographicHash>
#include "openssl/sha.h"
class AcceleratedCryptographicHash
{
public:
explicit AcceleratedCryptographicHash(QCryptographicHash::Algorithm method);
virtual ~AcceleratedCryptographicHash();
void addData(const char *data, int length);
void addData(const QByteArray &data);
QByteArray result();
protected:
SHA256_CTX _sha256;
};
#endif // ACCELERATEDCRYPTOGRAPHICHASH_H