internal ScannableFingerprint(byte[] localFingerprintData, byte[] remoteFingerprintData)
{
FingerprintProtos.LogicalFingerprint localFingerprint = FingerprintProtos.LogicalFingerprint.CreateBuilder()
.SetContent(ByteString.CopyFrom(ByteUtil.Trim(localFingerprintData, 32)))
.Build();
FingerprintProtos.LogicalFingerprint remoteFingerprint = FingerprintProtos.LogicalFingerprint.CreateBuilder()
.SetContent(ByteString.CopyFrom(ByteUtil.Trim(remoteFingerprintData, 32)))
.Build();
_fingerprints = FingerprintProtos.CombinedFingerprints.CreateBuilder()
.SetVersion((uint)Version)
.SetLocalFingerprint(localFingerprint)
.SetRemoteFingerprint(remoteFingerprint)
.Build();
}
/**
* Compare a scanned QR code with what we expect.
*
* @param scannedFingerprintData The scanned data
* @return True if matching, otehrwise false.
* @throws FingerprintVersionMismatchException if the scanned fingerprint is the wrong version.
* @throws FingerprintIdentifierMismatchException if the scanned fingerprint is for the wrong stable identifier.
*/
public bool CompareTo(byte[] scannedFingerprintData)
/* throws FingerprintVersionMismatchException,
* FingerprintIdentifierMismatchException,
* FingerprintParsingException */
{
try
{
FingerprintProtos.CombinedFingerprints scanned = FingerprintProtos.CombinedFingerprints.ParseFrom(scannedFingerprintData);
if (!scanned.HasRemoteFingerprint || !scanned.HasLocalFingerprint ||
!scanned.HasVersion || scanned.Version != _fingerprints.Version)
{
throw new FingerprintVersionMismatchException((int)scanned.Version, Version);
}
return(ByteUtil.IsEqual(_fingerprints.LocalFingerprint.Content.ToByteArray(), scanned.RemoteFingerprint.Content.ToByteArray()) &&
ByteUtil.IsEqual(_fingerprints.RemoteFingerprint.Content.ToByteArray(), scanned.LocalFingerprint.Content.ToByteArray()));
}
catch (InvalidProtocolBufferException e)
{
throw new FingerprintParsingException(e);
}
}
