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This commit is contained in:
Klaus Basan
2019-09-27 22:53:11 +02:00
committed by Mat Sutcliffe
parent cd58108bfe
commit 6a9109bf8f
13 changed files with 153 additions and 131 deletions
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52
src/blackcore/afv/crypto/cryptodtochannel.cpp
View File

@@ -16,29 +16,29 @@ namespace BlackCore
{
CCryptoDtoChannel::CCryptoDtoChannel(QString channelTag, const QByteArray &aeadReceiveKey, const QByteArray &aeadTransmitKey, int receiveSequenceHistorySize)
{
ChannelTag = channelTag;
m_channelTag = channelTag;
m_aeadReceiveKey = aeadReceiveKey;
m_aeadTransmitKey = aeadTransmitKey;
receiveSequenceSizeMaxSize = receiveSequenceHistorySize;
if (receiveSequenceSizeMaxSize < 1)
receiveSequenceSizeMaxSize = 1;
receiveSequenceHistory = new uint[receiveSequenceSizeMaxSize];
receiveSequenceHistoryDepth = 0;
m_receiveSequenceSizeMaxSize = receiveSequenceHistorySize;
if (m_receiveSequenceSizeMaxSize < 1)
m_receiveSequenceSizeMaxSize = 1;
m_receiveSequenceHistory = new uint[m_receiveSequenceSizeMaxSize];
m_receiveSequenceHistoryDepth = 0;
}
CCryptoDtoChannel::CCryptoDtoChannel(CryptoDtoChannelConfigDto channelConfig, int receiveSequenceHistorySize)
{
ChannelTag = channelConfig.channelTag;
m_channelTag = channelConfig.channelTag;
m_aeadReceiveKey = channelConfig.aeadReceiveKey;
m_aeadTransmitKey = channelConfig.aeadTransmitKey;
hmacKey = channelConfig.hmacKey;
m_hmacKey = channelConfig.hmacKey;
receiveSequenceSizeMaxSize = receiveSequenceHistorySize;
if (receiveSequenceSizeMaxSize < 1)
receiveSequenceSizeMaxSize = 1;
receiveSequenceHistory = new uint[receiveSequenceSizeMaxSize];
receiveSequenceHistoryDepth = 0;
m_receiveSequenceSizeMaxSize = receiveSequenceHistorySize;
if (m_receiveSequenceSizeMaxSize < 1)
m_receiveSequenceSizeMaxSize = 1;
m_receiveSequenceHistory = new uint[m_receiveSequenceSizeMaxSize];
m_receiveSequenceHistoryDepth = 0;
}
QByteArray CCryptoDtoChannel::getTransmitKey(CryptoDtoMode mode)
@@ -56,9 +56,9 @@ namespace BlackCore
QByteArray CCryptoDtoChannel::getTransmitKey(CryptoDtoMode mode, uint &sequenceToSend)
{
sequenceToSend = transmitSequence;
transmitSequence++;
LastTransmitUtc = QDateTime::currentDateTimeUtc();
sequenceToSend = m_transmitSequence;
m_transmitSequence++;
m_LastTransmitUtc = QDateTime::currentDateTimeUtc();
switch (mode)
{
@@ -73,7 +73,7 @@ namespace BlackCore
QString CCryptoDtoChannel::getChannelTag() const
{
return ChannelTag;
return m_channelTag;
}
QByteArray CCryptoDtoChannel::getReceiveKey(CryptoDtoMode mode)
@@ -97,27 +97,27 @@ namespace BlackCore
return false;
}
if (receiveSequenceHistoryDepth < receiveSequenceSizeMaxSize) //If the buffer has been filled...
if (m_receiveSequenceHistoryDepth < m_receiveSequenceSizeMaxSize) //If the buffer has been filled...
{
receiveSequenceHistory[receiveSequenceHistoryDepth++] = sequenceReceived;
m_receiveSequenceHistory[m_receiveSequenceHistoryDepth++] = sequenceReceived;
}
else
{
int minIndex;
uint minValue = getMin(minIndex);
if (sequenceReceived < minValue) { return false; } // Possible replay attack
receiveSequenceHistory[minIndex] = sequenceReceived;
m_receiveSequenceHistory[minIndex] = sequenceReceived;
}
LastReceiveUtc = QDateTime::currentDateTimeUtc();
m_lastReceiveUtc = QDateTime::currentDateTimeUtc();
return true;
}
bool CCryptoDtoChannel::contains(uint sequence)
{
for (int i = 0; i < receiveSequenceHistoryDepth; i++)
for (int i = 0; i < m_receiveSequenceHistoryDepth; i++)
{
if (receiveSequenceHistory[i] == sequence)
if (m_receiveSequenceHistory[i] == sequence)
return true;
}
return false;
@@ -129,12 +129,12 @@ namespace BlackCore
minIndex = -1;
int index = -1;
for (int i = 0; i < receiveSequenceHistoryDepth; i++)
for (int i = 0; i < m_receiveSequenceHistoryDepth; i++)
{
index++;
if (receiveSequenceHistory[i] <= minValue)
if (m_receiveSequenceHistory[i] <= minValue)
{
minValue = receiveSequenceHistory[i];
minValue = m_receiveSequenceHistory[i];
minIndex = index;
}
}

26
src/blackcore/afv/crypto/cryptodtochannel.h
View File

@@ -35,32 +35,36 @@ namespace BlackCore
//! Ctor
CCryptoDtoChannel(CryptoDtoChannelConfigDto channelConfig, int receiveSequenceHistorySize = 10);
//! Transmit key @{
QByteArray getTransmitKey(CryptoDtoMode mode);
QByteArray getTransmitKey(CryptoDtoMode mode, uint &sequenceToSend);
//! @}
//! Channel tag
QString getChannelTag() const;
//! Receiver key
QByteArray getReceiveKey(CryptoDtoMode mode);
//! check the received sequence
bool checkReceivedSequence(uint sequenceReceived);
private:
bool contains(uint sequence);
uint getMin(int &minIndex);
QByteArray m_aeadTransmitKey;
uint transmitSequence = 0;
QByteArray m_aeadReceiveKey;
uint *receiveSequenceHistory;
int receiveSequenceHistoryDepth;
int receiveSequenceSizeMaxSize;
uint m_transmitSequence = 0;
uint *m_receiveSequenceHistory;
int m_receiveSequenceHistoryDepth;
int m_receiveSequenceSizeMaxSize;
QByteArray hmacKey;
QString ChannelTag;
QDateTime LastTransmitUtc;
QDateTime LastReceiveUtc;
QByteArray m_hmacKey;
QString m_channelTag;
QDateTime m_LastTransmitUtc;
QDateTime m_lastReceiveUtc;
};
} // ns
} // ns