如何在XMPP android的聊天部分实现OMEMO加密
如何在XMPP android的聊天部分实现OMEMO加密
提问于 2020-01-23 12:22:14
你好！
我尝试了使用OMEMO进行加密，使用XMPP进行聊天，但是在进行实际加密时会出现设备列表问题。
遵循以下步骤，
- 两局服务登记
- 设备id生成
- 指纹生成
- 信任OMEMO身份
- 使用OMEMO管理器加密
- 使用XMPP连接对象发送消息。 请检查下面的代码，注意，我没有关于商店文件的想法，所以我创建了一个本地文件并给出了这里。我没有找到任何关于同样的文件。如果有人知道的话，请告诉我同样的情况。 尝试{ var messageToSend = tMessagetext!!.text.toString()；var mFriendJID = "abc@localhost/yyy"；val jidFriend = JidCreate.from(mFriendJID)；val jidBare = JidCreate.bareFrom(mFriendJID)；val msg = Message(jidFriend，Message.Type.chat)；msg.setBody(messageToSend)；SignalOmemoService.acknowledgeLicense()；if (！File(Environment.getExternalStorageDirectory().absolutePath，()) SignalOmemoService.setup()；val service = SignalOmemoService.getInstance() val file =SignalOmemoService.getInstance“myAppFile.txt”；OmemoConfiguration.setFileBasedOmemoStoreDefaultPath(file)；val memomanager = OmemoManager.getInstanceFor(ChatService.xmppConnection) val device = memomanager.ownDevice Log.e(TAG，device.deviceId.toString()+"，"+device.jid)；val fingerPrint =memomanager.getFingerprint(设备) Log.e(TAG，fingerPrint.toString())；memomanager.trustOmemoIdentity(device，fingerPrint)；val encryptedMessage =memomanager！.encrypt(jidBare，messageToSend)！！.text.clear()；}catch (e :java.lang.Exception){ e.printStackTrace() }
我所犯的错误是，
OmemoService: Could not fetch device list of abc@localhost: org.jivesoftware.smack.XMPPException$XMPPErrorException: XMPP error reply received from abc@localhost: XMPPError: service-unavailable - cancel
org.jivesoftware.smack.XMPPException$XMPPErrorException: XMPP error reply received from abc@localhost: XMPPError: service-unavailable - cancel
at org.jivesoftware.smack.StanzaCollector.nextResultOrThrow(StanzaCollector.java:268)
at org.jivesoftware.smack.StanzaCollector.nextResultOrThrow(StanzaCollector.java:219)
at org.jivesoftware.smackx.pubsub.LeafNode.getItems(LeafNode.java:196)
at org.jivesoftware.smackx.pubsub.LeafNode.getItems(LeafNode.java:189)
at org.jivesoftware.smackx.pubsub.LeafNode.getItems(LeafNode.java:136)
at org.jivesoftware.smackx.pubsub.PubSubManager.getLeafNodeProsodyWorkaround(PubSubManager.java:350)
at org.jivesoftware.smackx.pubsub.PubSubManager.getLeafNode(PubSubManager.java:333)
at org.jivesoftware.smackx.omemo.OmemoService.fetchDeviceListNode(OmemoService.java:435)
at org.jivesoftware.smackx.omemo.OmemoService.fetchDeviceList(OmemoService.java:452)
at org.jivesoftware.smackx.omemo.OmemoService.refreshDeviceList(OmemoService.java:504)
at org.jivesoftware.smackx.omemo.OmemoService.buildOrCreateOmemoSessionsFromBundles(OmemoService.java:605)
at org.jivesoftware.smackx.omemo.OmemoService.processSendingMessage(OmemoService.java:810)
at org.jivesoftware.smackx.omemo.OmemoService.processSendingMessage(OmemoService.java:787)
at org.jivesoftware.smackx.omemo.OmemoManager.encrypt(OmemoManager.java:209)
at com.abcd.androidChatapp.MainActivity.onSendMessage(MainActivity.kt:347)
at java.lang.reflect.Method.invoke(Native Method)
at androidx.appcompat.app.AppCompatViewInflater$DeclaredOnClickListener.onClick(AppCompatViewInflater.java:385)
at android.view.View.performClick(View.java:6312)
at android.view.View$PerformClick.run(View.java:24943)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:192)
at android.app.ActivityThread.main(ActivityThread.java:6754)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:549)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:828)请让我知道这个代码中的问题，这样我就可以继续前进了。如果您有关于相同的适当文档，请告诉我，这样我就可以深入了解这个过程中到底发生了什么。
提前感谢你。
回答 1
Stack Overflow用户
发布于 2020-03-19 14:48:01
这是我使用的代码。
//Setup stream
SignalOmemoService.acknowledgeLicense();
SignalOmemoService.setup();
SignalOmemoService service = (SignalOmemoService) SignalOmemoService.getInstance();
service.setOmemoStoreBackend(new SignalCachingOmemoStore(new SignalFileBasedOmemoStore(mContext.getFilesDir())));
omemoManager = OmemoManager.getInstanceFor(getSafeConnection(), deviceId);
omemoManager.setTrustCallback(this);
omemoManager.addOmemoMessageListener(this);
omemoManager.addOmemoMucMessageListener(this);
//After login
omemoManager.purgeDeviceList();
omemoManager.initialize();
//send message
BareJid bareJid = JidCreate.bareFrom(jid);
OmemoMessage.Sent encMesage = omemoManager.encrypt(bareJid, msgText);
Message newMessage = encMesage.asMessage(bareJid);
xmppStream.sendMessage(newMessage);此外，您还需要检查这
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原文链接：
https://stackoverflow.com/questions/59878491
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