66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
/*
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* Strawberry Music Player
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* Copyright 2018-2021, Jonas Kvinge <jonas@jkvinge.net>
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*
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* Strawberry 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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* Strawberry 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 Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <QByteArray>
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#include <QString>
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#include <QCryptographicHash>
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#include "cryptutils.h"
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namespace Utilities {
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QByteArray Hmac(const QByteArray &key, const QByteArray &data, const QCryptographicHash::Algorithm method) {
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constexpr int block_size = 64;
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Q_ASSERT(key.length() <= block_size);
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QByteArray inner_padding(block_size, static_cast<char>(0x36));
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QByteArray outer_padding(block_size, static_cast<char>(0x5c));
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for (int i = 0; i < key.length(); ++i) {
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inner_padding[i] = static_cast<char>(inner_padding[i] ^ key[i]);
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outer_padding[i] = static_cast<char>(outer_padding[i] ^ key[i]);
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}
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QByteArray part;
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part.append(inner_padding);
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part.append(data);
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QByteArray total;
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total.append(outer_padding);
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total.append(QCryptographicHash::hash(part, method));
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return QCryptographicHash::hash(total, method);
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}
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QByteArray HmacSha256(const QByteArray &key, const QByteArray &data) {
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return Hmac(key, data, QCryptographicHash::Sha256);
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}
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QByteArray HmacMd5(const QByteArray &key, const QByteArray &data) {
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return Hmac(key, data, QCryptographicHash::Md5);
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}
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QByteArray HmacSha1(const QByteArray &key, const QByteArray &data) {
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return Hmac(key, data, QCryptographicHash::Sha1);
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}
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} // namespace Utilities
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