java - tipos - El cifrado ''aes256-cbc'' es obligatorio, pero no está disponible

como hacer un algoritmo de cifrado

Question

Intento hacer un SFTP usando JSch, pero encontré un error:

com.jcraft.jsch.JSchException: el cifrado ''aes256-cbc'' es obligatorio, pero no está disponible.

A continuación está el código que utilicé. ¿Hay algo que me perdí?

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

[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)

Answer 1

Debe agregar a su JRE - política de fuerza ilimitada de Java, por ejemplo .: http://www.oracle.com/technetwork/java/javase/downloads/jce-6-download-429243.html Reemplace local_policy y us_export_policy en el la ruta JRE del servidor (/ lib / security) Se puede encontrar otra versión de las políticas de JCE en las páginas web de Oracle.

Answer 2

Este error también aparece cuando su clave privada está en formato masilla y no en formato ssh abierto.

Puede convertir la clave con la herramienta puttygen en una clave privada de formato ssh abierta.

Esto resuelve el problema para mí. Reemplazar los archivos Java no era necesario en mi caso con netbeans 8.0.2 y Java 8_25.

Answer 3

Por defecto, las políticas de JCE -que vienen con su JDK o JRE- no admiten tales técnicas para cifrar como (ase-256, .. etc).

Por supuesto, DEBE reemplazar sus JCE jars actuales (existen en $ JAVA_HOME / jre / lib / security) con la versión compatible de Jave que tiene del sitio web de Oracle.

• Descargar enlaces:

Para JDK 1.6: http://www.oracle.com/technetwork/java/javase/downloads/jce-6-download-429243.html Enlace corregido

Para JDK 1.7: http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html

Para JDK 1.8: http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html

Esto arreglará el problema.