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Signal Protocol cryptography library for Java
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/**
* Copyright (C) 2014-2016 Open Whisper Systems
*
* Licensed according to the LICENSE file in this repository.
*/
package org.whispersystems.libsignal.protocol;
import org.signal.client.internal.Native;
import org.signal.client.internal.NativeHandleGuard;
import org.whispersystems.libsignal.InvalidKeyException;
import org.whispersystems.libsignal.InvalidMessageException;
import org.whispersystems.libsignal.LegacyMessageException;
import org.whispersystems.libsignal.ecc.ECPrivateKey;
import org.whispersystems.libsignal.ecc.ECPublicKey;
import java.text.ParseException;
import java.util.UUID;
public class SenderKeyMessage implements CiphertextMessage, NativeHandleGuard.Owner {
private final long unsafeHandle;
@Override
protected void finalize() {
Native.SenderKeyMessage_Destroy(this.unsafeHandle);
}
public SenderKeyMessage(long unsafeHandle) {
this.unsafeHandle = unsafeHandle;
}
public long unsafeNativeHandleWithoutGuard() {
return unsafeHandle;
}
public SenderKeyMessage(byte[] serialized) throws InvalidMessageException, LegacyMessageException {
unsafeHandle = Native.SenderKeyMessage_Deserialize(serialized);
}
public UUID getDistributionId() {
try (NativeHandleGuard guard = new NativeHandleGuard(this)) {
return Native.SenderKeyMessage_GetDistributionId(guard.nativeHandle());
}
}
public int getChainId() {
try (NativeHandleGuard guard = new NativeHandleGuard(this)) {
return Native.SenderKeyMessage_GetChainId(guard.nativeHandle());
}
}
public int getIteration() {
try (NativeHandleGuard guard = new NativeHandleGuard(this)) {
return Native.SenderKeyMessage_GetIteration(guard.nativeHandle());
}
}
public byte[] getCipherText() {
try (NativeHandleGuard guard = new NativeHandleGuard(this)) {
return Native.SenderKeyMessage_GetCipherText(guard.nativeHandle());
}
}
public void verifySignature(ECPublicKey signatureKey)
throws InvalidMessageException
{
try (
NativeHandleGuard guard = new NativeHandleGuard(this);
NativeHandleGuard keyGuard = new NativeHandleGuard(signatureKey);
) {
if (!Native.SenderKeyMessage_VerifySignature(guard.nativeHandle(), keyGuard.nativeHandle())) {
throw new InvalidMessageException("Invalid signature!");
}
}
}
@Override
public byte[] serialize() {
try (NativeHandleGuard guard = new NativeHandleGuard(this)) {
return Native.SenderKeyMessage_GetSerialized(guard.nativeHandle());
}
}
@Override
public int getType() {
return CiphertextMessage.SENDERKEY_TYPE;
}
}
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