91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
/*
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PIP - Platform Independent Primitives
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Base class for ethernet utils
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Copyright (C) 2019 Ivan Pelipenko peri4ko@yandex.ru
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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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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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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 "piethutilbase.h"
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#ifdef PIP_CRYPT
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# include "picrypt.h"
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#endif
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/** \class PIEthUtilBase
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* \brief Base class for ethernet utils
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*
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* \section PIEthUtilBase_synopsis Synopsis
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* %PIEthUtilBase provides crypt layer for derived classes:
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* \a PIStreamPacker and \a PIBroadcast. All input and output
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* (sended and received) data can be decrypted/encrypted by this layer.
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*
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* By default crypt layer is disabled.
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*
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* You can separetely enable it and set ready-to-use
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* key by \a setCryptEnabled() and \a setCryptKey(). Or you can
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* use \a createCryptKey() to generate key from your passphrase
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* and automatic enable crypt layer.
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*
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* \note To use crypt layer, PIP should be built with crypt module,
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* otherwise your in/out data will be lost.
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*
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* You can use this class as base for your own classes. Use \a cryptData()
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* and \a decryptData() when send and receive your data.
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*
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*/
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PIEthUtilBase::PIEthUtilBase() {
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_crypt = false;
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}
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PIEthUtilBase::~PIEthUtilBase() {
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}
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void PIEthUtilBase::createCryptKey(const PIString & k) {
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#ifdef PIP_CRYPT
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_key = PICrypt::hash("sodium_bug");
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_key = PICrypt::hash(k);
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#else
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piCout << "[PIEthUtilBase] PICrypt wasn`t built!";
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#endif
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_crypt = true;
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}
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PIByteArray PIEthUtilBase::cryptData(const PIByteArray & data) {
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if (!_crypt) return data;
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return
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#ifdef PIP_CRYPT
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PICrypt::crypt(data, _key);
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#else
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PIByteArray();
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#endif
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}
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PIByteArray PIEthUtilBase::decryptData(const PIByteArray & data) {
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if (!_crypt) return data;
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#ifdef PIP_CRYPT
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bool ok = false;
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PIByteArray ret = PICrypt::decrypt(data, _key, &ok);
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if (!ok) return PIByteArray();
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return ret;
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#else
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return PIByteArray();
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#endif
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}
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