blocks|key|641277|text|追根溯源，我最终发现dsa类型的公钥没有添加到远程服务器上的授权密钥中。添加同样的功能对我来说很有效。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|641278|ssh与rsa密钥一起工作，导致我回顾我的代码。|641279|谢谢大家。|641280|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

Tracing the root cause, i finally found that the public key of type dsa is not added to the authorized keys on remote server. Appending the same worked for me.

The ssh was working with rsa key, causing me to look back in my code.

thanks everyone.

blocks|key|4040809|text|我还面临着身份验证失败的问题，我的代码的问题是我有|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4040810|channelSftp.cd("");|code-block|syntax|javascript|4040811|它将其更改为|4040812|channelSftp.cd(".");|4040813|然后它就起作用了。|4040814|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I have also face the Auth Fail issue, the problem with my code is that I have 

<pre><code>channelSftp.cd("");
</code></pre>

It changed it to 

<pre><code>channelSftp.cd(".");
</code></pre>

Then it works.

blocks|key|641335|text|尝试显式添加auth方法，如下所示，因为有时需要：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|641336|session.setConfig("PreferredAuthentications",+"password");|code-block|syntax|javascript|641337|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Try to add auth method explicitly as below, because sometimes it is required: 

<pre><code>session.setConfig("PreferredAuthentications", "password");
</code></pre>

blocks|key|4040790|text|例如，当我从远程服务器获取文件并将其保存在本地机器上时|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4040791|package+connector;|code-block|syntax|javascript|4040792|import+java.io.File;
import+java.io.FileNotFoundException;
import+java.io.FileOutputStream;
import+java.io.IOException;
import+java.io.InputStream;

import+com.jcraft.jsch.ChannelSftp;
import+com.jcraft.jsch.JSch;
import+com.jcraft.jsch.JSchException;
import+com.jcraft.jsch.Session;
import+com.jcraft.jsch.SftpException;

public+class+Main+{

++++public+static+void+main(String[]+args)+throws+JSchException,+SftpException,+IOException+{
++++++++//+TODO+Auto-generated+method+stub
++++++++String+username+=+"XXXXXX";
++++++++String+host+=+"XXXXXX";
++++++++String+passwd+=+"XXXXXX";
++++++++JSch+conn+=+new+JSch();
++++++++Session+session+=+null;
++++++++session+=+conn.getSession(username,+host,+22);
++++++++session.setPassword(passwd);
++++++++session.setConfig("StrictHostKeyChecking",+"no");
++++++++session.connect();

++++++++ChannelSftp+channel+=+null;
++++++++channel+=+(ChannelSftp)session.openChannel("sftp");
++++++++channel.connect();

++++++++channel.cd("/tmp/qtmp");

++++++++InputStream+in+=+channel.get("testScp");
++++++++String+lf+=+"OBJECT_FILE";
++++++++FileOutputStream+tergetFile+=+new+FileOutputStream(lf);

++++++++int+c;
++++++++while+(+(c=+in.read())+!=+-1+)+{
++++++++++++tergetFile.write(c);
++++++++}+

++++++++in.close();
++++++++tergetFile.close();

++++++++channel.disconnect();
++++++++session.disconnect();+++

++++}

}|4040793|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|D|7|M|8|@]|9|@]|A|$E|F]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Example case, when I get file from remote server and save it in local machine 
 package connector;

<pre><code>import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import com.jcraft.jsch.ChannelSftp;
import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;
import com.jcraft.jsch.SftpException;

public class Main {

 public static void main(String[] args) throws JSchException, SftpException, IOException {
 // TODO Auto-generated method stub
 String username = "XXXXXX";
 String host = "XXXXXX";
 String passwd = "XXXXXX";
 JSch conn = new JSch();
 Session session = null;
 session = conn.getSession(username, host, 22);
 session.setPassword(passwd);
 session.setConfig("StrictHostKeyChecking", "no");
 session.connect();

 ChannelSftp channel = null;
 channel = (ChannelSftp)session.openChannel("sftp");
 channel.connect();

 channel.cd("/tmp/qtmp");

 InputStream in = channel.get("testScp");
 String lf = "OBJECT_FILE";
 FileOutputStream tergetFile = new FileOutputStream(lf);

 int c;
 while ( (c= in.read()) != -1 ) {
 tergetFile.write(c);
 } 

 in.close();
 tergetFile.close();

 channel.disconnect();
 session.disconnect(); 

 }

}
</code></pre>

blocks|key|1783327|text|如果用户名/密码包含任何特殊字符，则在camel配置中使用RAW来配置以下值|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1783328|1783329|RAW(se%2Bre?t&23)，其中se%2Bre?t&23是实际的password|unordered-list-item|offset|length|style|CODE|1783330|RAW({abc.ftp.password})，其中{abc.ftp.password}值来自弹簧属性文件。|1783331|1783332|通过使用RAW，解决了我的问题。|1783333|http://camel.apache.org/how-do-i-configure-endpoints.html|1783334|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|F|I|A|0|0|N|Q|I|0|0|0|0|1L|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|Z|8|@$F|10|G|11|H|I]|$F|12|G|13|H|I]]|9|@]|A|$]]|$1|J|3|K|5|E|7|14|8|@$F|15|G|16|H|I]|$F|17|G|18|H|I]]|9|@]|A|$]]|$1|L|3|-4|5|6|7|19|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|1A|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|1B|8|@]|9|@$F|1C|G|1D|1|1E]]|A|$]]|$1|Q|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|P]]]]

If username/password contains any special characters then inside the camel configuration use RAW for Configuring the values like

<ul>
<li><code>RAW(se+re?t&amp;23)</code> where <code>se+re?t&amp;23</code> is actual password</li>
<li><code>RAW({abc.ftp.password})</code> where <code>{abc.ftp.password}</code> values comes from a spring property file.</li>
</ul>

By using RAW, solved my issue. 

<a href="http://camel.apache.org/how-do-i-configure-endpoints.html" rel="nofollow noreferrer">http://camel.apache.org/how-do-i-configure-endpoints.html</a>

blocks|key|1916266|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1916267|发现了其他类似的问题，但没有答案。|blockquote|1916268|1916269|1916270|如果你知道你是在哪里发现这个问题的，那就太有趣了。|1916271|就我记忆所及，根据com.jcraft.jsch.JSchException:+Auth+cancel，我尝试在.addIdentity()方法中添加一个密码短语。如果您生成的密钥文件没有密钥文件，则可以使用""。另一个错误来源是指纹字符串。如果不匹配，您也将获得身份验证失败(取决于目标服务器)。|offset|length|style|CODE|1916272|最后是我的工作源代码--在我可以解决丑陋的管理任务之后：|1916273|public+void+connect(String+host,+int+port,+
++++++++++++++++++++String+user,+String+pwd,
++++++++++++++++++++String+privateKey,+String+fingerPrint,
++++++++++++++++++++String+passPhrase
++++++++++++++++++)+throws+JSchException{
++++JSch+jsch+=+new+JSch();

++++String+absoluteFilePathPrivatekey+=+"./";
++++File+tmpFileObject+=+new+File(privateKey);
++++if+(tmpFileObject.exists()+&&+tmpFileObject.isFile())
++++{
++++++absoluteFilePathPrivatekey+=+tmpFileObject.getAbsolutePath();
++++}

++++jsch.addIdentity(absoluteFilePathPrivatekey,+passPhrase);
++++session+=+jsch.getSession(user,+host,+port);

++++//Password+and+fingerprint+will+be+given+via+UserInfo+interface.
++++UserInfo+ui+=+new+UserInfoImpl(pwd,+fingerPrint);
++++session.setUserInfo(ui);

++++session.connect();

++++Channel+channel+=+session.openChannel("sftp");
++++channel.connect();
++++c+=+(ChannelSftp)+channel;
}|code-block|syntax|javascript|1916274|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/2901248/com-jcraft-jsch-jschexception-auth-cancel?rq=1^0|0|0|0|0|0|1K|E|2W|2|9|16|0|0|0|0^^$0|@$1|2|3|-4|4|5|6|12|7|@]|8|@]|9|$]]|$1|A|3|B|4|C|6|13|7|@]|8|@]|9|$]]|$1|D|3|-4|4|5|6|14|7|@]|8|@]|9|$]]|$1|E|3|-4|4|5|6|15|7|@]|8|@]|9|$]]|$1|F|3|G|4|5|6|16|7|@]|8|@]|9|$]]|$1|H|3|I|4|5|6|17|7|@$J|18|K|19|L|M]|$J|1A|K|1B|L|M]]|8|@$J|1C|K|1D|1|1E]]|9|$]]|$1|N|3|O|4|5|6|1F|7|@]|8|@]|9|$]]|$1|P|3|Q|4|R|6|1G|7|@]|8|@]|9|$S|T]]|$1|U|3|-4|4|5|6|1H|7|@]|8|@]|9|$]]]|V|$W|$4|X|Y|Z|9|$10|11]]]]

<blockquote>
 Found other similar question, but not the answer.
</blockquote>

It would have been interesting to know, where you have found this question.

As far as I can remember and according <a href="https://stackoverflow.com/questions/2901248/com-jcraft-jsch-jschexception-auth-cancel?rq=1">com.jcraft.jsch.JSchException: Auth cancel</a>
try to add to method <code>.addIdentity()</code> a passphrase. You can use <code>""</code> in case you generated a keyfile without one.
Another source of error is the fingerprint string. If it doesn't match you will get an authentication failure either (depends from on the target server).

And at last here my working source code - after I could solve the ugly administration tasks:

<pre><code>public void connect(String host, int port, 
 String user, String pwd,
 String privateKey, String fingerPrint,
 String passPhrase
 ) throws JSchException{
 JSch jsch = new JSch();

 String absoluteFilePathPrivatekey = "./";
 File tmpFileObject = new File(privateKey);
 if (tmpFileObject.exists() &amp;&amp; tmpFileObject.isFile())
 {
 absoluteFilePathPrivatekey = tmpFileObject.getAbsolutePath();
 }

 jsch.addIdentity(absoluteFilePathPrivatekey, passPhrase);
 session = jsch.getSession(user, host, port);

 //Password and fingerprint will be given via UserInfo interface.
 UserInfo ui = new UserInfoImpl(pwd, fingerPrint);
 session.setUserInfo(ui);

 session.connect();

 Channel channel = session.openChannel("sftp");
 channel.connect();
 c = (ChannelSftp) channel;
}
</code></pre>

blocks|key|1916385|text|在我的例子中，我使用了下面的依赖项|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1916386|<dependency>
++++<groupId>com.jcraft</groupId>
++++<artifactId>jsch</artifactId>
++++<version>0.1.42</version>
</dependency>+|code-block|syntax|javascript|1916387|并获得相同的身份验证失败异常，但更新到以下版本的依赖关系和问题得到解决。|1916388|<dependency>
++++<groupId>com.jcraft</groupId>
++++<artifactId>jsch</artifactId>
++++<version>0.1.54</version>
</dependency>|1916389|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

in my case I was using below dependency

<pre><code>&lt;dependency&gt;
 &lt;groupId&gt;com.jcraft&lt;/groupId&gt;
 &lt;artifactId&gt;jsch&lt;/artifactId&gt;
 &lt;version&gt;0.1.42&lt;/version&gt;
&lt;/dependency&gt; 
</code></pre>

and getting the same exception of Auth fail, but updated dependency to below version and problem get resolved.

<pre><code>&lt;dependency&gt;
 &lt;groupId&gt;com.jcraft&lt;/groupId&gt;
 &lt;artifactId&gt;jsch&lt;/artifactId&gt;
 &lt;version&gt;0.1.54&lt;/version&gt;
&lt;/dependency&gt;
</code></pre>

While trying to upload the file to our server, i am getting the following exception

<pre><code> com.jcraft.jsch.JSchException: Auth fail
 at com.jcraft.jsch.Session.connect(Session.java:464)
 at com.jcraft.jsch.Session.connect(Session.java:158)
 at FtpService.transferFileToReciever(FtpService.java:80)
 at FtpService.transferFileToReciever(FtpService.java:54)
 at FtpService.transferFileToRecievers(FtpService.java:44)
 at FtpService.transferSingeFile(FtpService.java:241)
 at FtpService.main(FtpService.java:26)
 Auth fail
</code></pre>

The part of function transferFileToReciever from source file is 

<pre><code> JSch jsch = new JSch();
 jsch.addIdentity("/root/.ssh/id_dsa");
 Session session = jsch.getSession(username, host, 22);

 session.setUserInfo(serverinfo);
 session.connect(); //geting exception here

 boolean ptimestamp = true;
</code></pre>

The passwords are working, since i can do login using ssh, but using JSCh it doesnt work even provided with key, username and password. 
Using id_dsa key with java version "1.6.0_25".
What could be the error?

Found other similar question, but not the answer.
Thanks in advance.

"com.jcraft.jsch.JSchException: Auth fail" with working passwords

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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在尝试将文件上传到我们的服务器时，我得到了以下异常    com.jcraft.jsch.JSchException: Auth fail        at com.jcraft.jsch.Session.connect(Session.java:464)        at com.jcraft.jsch.Session.connect(Session.java:158)        at 

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