BellServer::BellServer(uint32 keyMaster, uint32 *keyVersions, uint8 keyMax)
{
keyMaster_ = keyMaster;
keyVersions_ = keyVersions;
keyMax_ = keyMax;
printf("BellServer with master key: %08X\n", keyMaster);
// Build all keys for all clients
for(uint8 i = 0; i < keyMax_; i++)
{
uint32 clientKey = indexToKey(i);
uint32 clientIndex = keyToIndex(clientKey, i);
printf("Client %i (version: %i) with key %08X, decrypted key: %i\n", i, getKeyVersion(i), clientKey, clientIndex);
if(clientIndex != i)
{
printf("There is an error in the key algorithm, EXIT!");
exit(1);
}
// Add it to the list
clientBells_[clientKey][0] = NULL;
}
}
bool DESFireKey::operator==(const DESFireKey& key) const
{
if (!Key::operator==(key))
{
return false;
}
if (isEmpty() && key.isEmpty())
{
return true;
}
if (getLength() != key.getLength() || isEmpty() || key.isEmpty())
{
return false;
}
return (getKeyVersion() == key.getKeyVersion() && getKeyType() == key.getKeyType());
}
uint32 BellServer::keyToIndex(uint32 key, uint8 index)
{
return ((key ^ getKeyVersion(index)) ^ keyMaster_) >> (32 - keyMax_);
}
uint32 BellServer::indexToKey(uint8 index)
{
return (((index << (32 - keyMax_)) ^ keyMaster_) ^ getKeyVersion(index));
}
