暗号「aes256-cbc」が必要ですが、利用できません
JSchを使用してSFTPを実行しようとしていますが、エラーが発生しました。
com.jcraft.jsch.JSchException：暗号 'aes256-cbc'が必要ですが、利用できません。
以下は私が使用したコードです。逃したものはありますか？
JSch jsch = new JSch();
Session session = null;
jsch.addIdentity("C:\\privatekey.ppk", "Password");
session = jsch.getSession("user", "54.251.240.234", 22);
session.setConfig("StrictHostKeyChecking", "no");
Channel channel = session.openChannel("sftp");
channel.connect();
ChannelSftp sftpChannel = (ChannelSftp) channel;
sftpChannel.put("C:\\Users\\test.txt", "/home/user/test.txt");
sftpChannel.exit();
session.disconnect();
スタックトレース
[8/30/13 1:56:26:556 SGT] 00000021 SystemErr R com.jcraft.jsch.JSchException: The cipher 'aes256-cbc' is required, but it is not available.
[8/30/13 1:56:26:557 SGT] 00000021 SystemErr R at com.jcraft.jsch.KeyPair.loadPPK(KeyPair.Java:1017)
[8/30/13 1:56:26:557 SGT] 00000021 SystemErr R at com.jcraft.jsch.KeyPair.load(KeyPair.Java:590)
[8/30/13 1:56:26:557 SGT] 00000021 SystemErr R at com.jcraft.jsch.KeyPair.load(KeyPair.Java:542)
[8/30/13 1:56:26:557 SGT] 00000021 SystemErr R at com.jcraft.jsch.IdentityFile.newInstance(IdentityFile.Java:40)
[8/30/13 1:56:26:558 SGT] 00000021 SystemErr R at com.jcraft.jsch.JSch.addIdentity(JSch.Java:389)
[8/30/13 1:56:26:558 SGT] 00000021 SystemErr R at com.jcraft.jsch.JSch.addIdentity(JSch.Java:370)
[8/30/13 1:56:26:558 SGT] 00000021 SystemErr R at com.belsize.sb.SB_UtilityBean.runExternalProgram_Windows(SB_UtilityBean.Java:1134)
[8/30/13 1:56:26:558 SGT] 00000021 SystemErr R at com.belsize.sb.EJSLocal0SLSB_Utility_861cc9f0.runExternalProgram_Windows(EJSLocal0SLSB_Utility_861cc9f0.Java)
[8/30/13 1:56:26:558 SGT] 00000021 SystemErr R at com.belsize.sb.SB_IntegrationBean.getFTP_Status(SB_IntegrationBean.Java:2175)
[8/30/13 1:56:26:559 SGT] 00000021 SystemErr R at com.belsize.sb.EJSLocal0SLSB_Integration_13682180.getFTP_Status(EJSLocal0SLSB_Integration_13682180.Java)
[8/30/13 1:56:26:559 SGT] 00000021 SystemErr R at pagecode.module.user_permission.W_useraccount.getFTP_Status(W_useraccount.Java:992)
[8/30/13 1:56:26:559 SGT] 00000021 SystemErr R at pagecode.module.user_permission.Up1006.doUp1006_commandlink_testftpAction(Up1006.Java:711)
[8/30/13 1:56:26:559 SGT] 00000021 SystemErr R at Sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[8/30/13 1:56:26:560 SGT] 00000021 SystemErr R at Sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.Java:60)
[8/30/13 1:56:26:560 SGT] 00000021 SystemErr R at Sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.Java:37)
[8/30/13 1:56:26:560 SGT] 00000021 SystemErr R at Java.lang.reflect.Method.invoke(Method.Java:611)
[8/30/13 1:56:26:560 SGT] 00000021 SystemErr R at org.Apache.el.parser.AstValue.invoke(AstValue.Java:268)
[8/30/13 1:56:26:560 SGT] 00000021 SystemErr R at org.Apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.Java:278)
[8/30/13 1:56:26:561 SGT] 00000021 SystemErr R at org.Apache.myfaces.view.facelets.el.TagMethodExpression.invoke(TagMethodExpression.Java:83)
[8/30/13 1:56:26:561 SGT] 00000021 SystemErr R at javax.faces.component._MethodExpressionToMethodBinding.invoke(_MethodExpressionToMethodBinding.Java:88)
[8/30/13 1:56:26:561 SGT] 00000021 SystemErr R at org.Apache.myfaces.application.ActionListenerImpl.processAction(ActionListenerImpl.Java:100)
[8/30/13 1:56:26:561 SGT] 00000021 SystemErr R at javax.faces.component.UICommand.broadcast(UICommand.Java:120)
[8/30/13 1:56:26:561 SGT] 00000021 SystemErr R at javax.faces.component.UIViewRoot._broadcastAll(UIViewRoot.Java:973)
[8/30/13 1:56:26:562 SGT] 00000021 SystemErr R at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.Java:275)
[8/30/13 1:56:26:562 SGT] 00000021 SystemErr R at javax.faces.component.UIViewRoot._process(UIViewRoot.Java:1285)
[8/30/13 1:56:26:562 SGT] 00000021 SystemErr R at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.Java:711)
[8/30/13 1:56:26:562 SGT] 00000021 SystemErr R at org.Apache.myfaces.lifecycle.InvokeApplicationExecutor.execute(InvokeApplicationExecutor.Java:34)
[8/30/13 1:56:26:562 SGT] 00000021 SystemErr R at org.Apache.myfaces.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.Java:171)
[8/30/13 1:56:26:563 SGT] 00000021 SystemErr R at org.Apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.Java:118)
[8/30/13 1:56:26:563 SGT] 00000021 SystemErr R at javax.faces.webapp.FacesServlet.service(FacesServlet.Java:189)
[8/30/13 1:56:26:563 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.Java:1225)
[8/30/13 1:56:26:563 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.Java:775)
[8/30/13 1:56:26:564 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.Java:457)
[8/30/13 1:56:26:564 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.Java:178)
[8/30/13 1:56:26:564 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.Java:136)
[8/30/13 1:56:26:564 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.Java:97)
[8/30/13 1:56:26:564 SGT] 00000021 SystemErr R at org.primefaces.webapp.filter.FileUploadFilter.doFilter(FileUploadFilter.Java:77)
[8/30/13 1:56:26:564 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.Java:195)
[8/30/13 1:56:26:565 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.Java:91)
[8/30/13 1:56:26:565 SGT] 00000021 SystemErr R at com.belsize.servlet.filter.RedirectLogin.doFilter(RedirectLogin.Java:177)
[8/30/13 1:56:26:565 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.Java:195)
[8/30/13 1:56:26:565 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.Java:91)
[8/30/13 1:56:26:565 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.Java:928)
[8/30/13 1:56:26:565 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.Java:1025)
[8/30/13 1:56:26:566 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.Java:87)
[8/30/13 1:56:26:566 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.Java:908)
[8/30/13 1:56:26:566 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.Java:1662)
[8/30/13 1:56:26:566 SGT] 00000021 SystemErr R at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.Java:195)
[8/30/13 1:56:26:566 SGT] 00000021 SystemErr R at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.Java:453)
[8/30/13 1:56:26:566 SGT] 00000021 SystemErr R at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.Java:515)
[8/30/13 1:56:26:567 SGT] 00000021 SystemErr R at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.Java:306)
[8/30/13 1:56:26:567 SGT] 00000021 SystemErr R at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.Java:83)
[8/30/13 1:56:26:567 SGT] 00000021 SystemErr R at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.Java:166)
[8/30/13 1:56:26:567 SGT] 00000021 SystemErr R at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.Java:217)
[8/30/13 1:56:26:567 SGT] 00000021 SystemErr R at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.Java:161)
[8/30/13 1:56:26:568 SGT] 00000021 SystemErr R at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.Java:138)
[8/30/13 1:56:26:568 SGT] 00000021 SystemErr R at com.ibm.io.async.ResultHandler.complete(ResultHandler.Java:204)
[8/30/13 1:56:26:568 SGT] 00000021 SystemErr R at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.Java:775)
[8/30/13 1:56:26:568 SGT] 00000021 SystemErr R at com.ibm.io.async.ResultHandler$2.run(ResultHandler.Java:905)
[8/30/13 1:56:26:568 SGT] 00000021 SystemErr R at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.Java:1691)
このエラーは、秘密鍵がオープンssh形式ではなくPuTTY形式の場合にも表示されます。
ツールputtygenを使用して、キーをオープンssh形式の秘密キーに変換できます。
これで問題は解決します。私の場合、Javaファイルをnetbeans 8.0.2およびJava 8_25。
デフォルトでは、JCEポリシー（JDKまたはJREに付属）は、（ase-256などの）暗号化技術をサポートしていません。
確かに、現在のJCE jar（$ Java_HOME/jre/lib/securityに存在する）を、Oracle Webサイトにある互換性のあるJaveバージョンに置き換える必要があります。
- リンクのダウンロード：
JDK 1.6の場合： http://www.Oracle.com/technetwork/Java/javase/downloads/jce-6-download-429243.html 修正されたリンク
JDK 1.7の場合： http://www.Oracle.com/technetwork/Java/javase/downloads/jce-7-download-432124.html
JDK 1.8の場合： http://www.Oracle.com/technetwork/Java/javase/downloads/jce8-download-2133166.html
これで問題が修正されます。
JREに追加する必要があります-Java無制限強度ポリシー、たとえば： http://www.Oracle.com/technetwork/Java/javase/downloads/jce-6 -download-429243.html サーバーのJREパス（\ lib\security）のlocal_policyおよびus_export_policyを置き換えてください。JCEポリシーの他のバージョンは、Oracle Webページにあります。