I am trying to do an SFTP using JSch, but I encountered some error:
我正在尝试使用JSch进行SFTP，但是我遇到了一些错误：
com.jcraft.jsch.JSchException: The cipher 'aes256-cbc' is required, but it is not available.
com.jcraft.jsch.JSchException：密码'aes256-cbc'是必需的，但它不可用。
Below is the code I used. Is there anything I missed out?
以下是我使用的代码。我错过了什么吗？
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();
Stacktrace
堆栈跟踪
[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)
3 个解决方案
#1
74
This error also appear when your private key is in putty format and not in open ssh format.
当您的私钥是putty格式而不是打开ssh格式时，也会出现此错误。
You can convert the key with the tool puttygen to an open ssh format private key.
您可以使用工具puttygen将密钥转换为打开的ssh格式私钥。
This solves the Problem for me. Replaceing the Java files was not necessary in my case with netbeans 8.0.2 and Java 8_25.
这为我解决了问题。在我的情况下，netbeans 8.0.2和Java 8_25不需要替换Java文件。
#2
52
By default, JCE policies -which come with your JDK or JRE- don't support such techniques for ciphering like (ase-256,.. etc).
默认情况下，JDK或JRE附带的JCE策略不支持像（ase-256，...等）这样的加密技术。
For sure you MUST replace your current JCE jars (exist on $JAVA_HOME/jre/lib/security) with compatible Jave version you have from oracle website.
当然，你必须用oracle网站上兼容的Jave版本替换你当前的JCE jar（存在于$ JAVA_HOME / jre / lib / security中）。
- Download links:
- 下载链接：
For JDK 1.6: http://www.oracle.com/technetwork/java/javase/downloads/jce-6-download-429243.html Corrected link
对于JDK 1.6：http：//www.oracle.com/technetwork/java/javase/downloads/jce-6-download-429243.html更正的链接
For JDK 1.7: http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html
对于JDK 1.7：http：//www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html
For JDK 1.8: http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html
对于JDK 1.8：http：//www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html
This will fix the problem.
这将解决问题。
#3
4
You need to add to Your JRE - java unlimited strength policy, eg.: http://www.oracle.com/technetwork/java/javase/downloads/jce-6-download-429243.html Please replace local_policy and us_export_policy on the server's JRE path (\lib\security) Other version of JCE policies can be found on oracle web pages.
您需要添加到您的JRE - java无限强度策略，例如：http：//www.oracle.com/technetwork/java/javase/downloads/jce-6-download-429243.html请替换local_policy和us_export_policy服务器的JRE路径（\ lib \ security）可以在oracle网页上找到其他版本的JCE策略。
#1
74
This error also appear when your private key is in putty format and not in open ssh format.
当您的私钥是putty格式而不是打开ssh格式时，也会出现此错误。
You can convert the key with the tool puttygen to an open ssh format private key.
您可以使用工具puttygen将密钥转换为打开的ssh格式私钥。
This solves the Problem for me. Replaceing the Java files was not necessary in my case with netbeans 8.0.2 and Java 8_25.
这为我解决了问题。在我的情况下，netbeans 8.0.2和Java 8_25不需要替换Java文件。
#2
52
By default, JCE policies -which come with your JDK or JRE- don't support such techniques for ciphering like (ase-256,.. etc).
默认情况下，JDK或JRE附带的JCE策略不支持像（ase-256，...等）这样的加密技术。
For sure you MUST replace your current JCE jars (exist on $JAVA_HOME/jre/lib/security) with compatible Jave version you have from oracle website.
当然，你必须用oracle网站上兼容的Jave版本替换你当前的JCE jar（存在于$ JAVA_HOME / jre / lib / security中）。
- Download links:
- 下载链接：
For JDK 1.6: http://www.oracle.com/technetwork/java/javase/downloads/jce-6-download-429243.html Corrected link
对于JDK 1.6：http：//www.oracle.com/technetwork/java/javase/downloads/jce-6-download-429243.html更正的链接
For JDK 1.7: http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html
对于JDK 1.7：http：//www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html
For JDK 1.8: http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html
对于JDK 1.8：http：//www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html
This will fix the problem.
这将解决问题。
#3
4
You need to add to Your JRE - java unlimited strength policy, eg.: http://www.oracle.com/technetwork/java/javase/downloads/jce-6-download-429243.html Please replace local_policy and us_export_policy on the server's JRE path (\lib\security) Other version of JCE policies can be found on oracle web pages.
您需要添加到您的JRE - java无限强度策略，例如：http：//www.oracle.com/technetwork/java/javase/downloads/jce-6-download-429243.html请替换local_policy和us_export_policy服务器的JRE路径（\ lib \ security）可以在oracle网页上找到其他版本的JCE策略。