How to resolve java.security.NoSuchAlgorithmException: Unsupported passphrase algorithm: DES-EDE3-CFB

Question

I am new employee at a software vendor that has embedded your java pro library into our product.  I am trying to set up an sftp connection in our product to CoreFTPServer running on the same box.  I have configured CoreFTP client and confirmed I can connect using sftp.

Unfortunately I do not have easy access to the folks who build our software to understand the dynamics of the relationship/contract/agreement with EnterpriseDT, so thought I would come on here to ask, since the Java stack trace shows the error is in your classes.

We are using Sun/Oracle JRE 8 on Windows Server 2012.  I have no idea which version of the EnterpriseDT library we are using.  I did see a message from 2008 on this site that you were going to add support for DES-EDE3-CFB so I find it hard to believe you haven't done that already.  I used a newer version of openssh to generate a different RSA private/public keypair encrypted with AES-128-CBC but I get the same error.

I am at a loss of how to resolve this and would appreciate some insight.

Comments

What is the error that you're seeing?

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com.appresso.ds.dp.modules.adapter.ftp.InvalidPrivateKeyException: Format of the private key file or passphrase of the private key file is invalid.
    at com.appresso.ds.dp.modules.adapter.ftp.edtftpj.FTPClientFactory.a(Unknown Source)
    at com.appresso.ds.dp.modules.adapter.ftp.edtftpj.FTPClientFactory.createFTPClient(Unknown Source)
    at com.appresso.ds.dp.modules.adapter.ftp.FTPAdapterResourceFactory$a.actionPerformed(Unknown Source)
    at com.appresso.ds.kernel.modules.mgr.dpcon.c.actionPerformed(Unknown Source)
    at com.appresso.ds.common.spi.config.impl.ConfigElementImpl.actionPerformed(Unknown Source)
    at com.appresso.ds.kernel.modules.mgr.dpcon.ap$10.process(Unknown Source)
    at com.appresso.ds.kernel.modules.mgr.dpcon.RemoteDataProcessingUtil$1.run(Unknown Source)
    at com.appresso.ds.kernel.modules.mgr.session.DataSpiderSessionManagerImpl.doWithSession(Unknown Source)
    at sun.reflect.GeneratedMethodAccessor93.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at com.appresso.ds.kernel.c.a(Unknown Source)
    at com.appresso.ds.kernel.ai.a(Unknown Source)
    at com.appresso.ds.kernel.i$1.invoke(Unknown Source)
    at com.sun.proxy.$Proxy0.doWithSession(Unknown Source)
    at com.appresso.ds.kernel.modules.mgr.dpcon.e.a(Unknown Source)
    at com.appresso.ds.kernel.modules.mgr.dpcon.RemoteDataProcessingUtil.a(Unknown Source)
    at com.appresso.ds.kernel.modules.mgr.dpcon.ap.actionPerformed(Unknown Source)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:323)
    at sun.rmi.transport.Transport$1.run(Transport.java:200)
    at sun.rmi.transport.Transport$1.run(Transport.java:197)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
    at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$256(TCPTransport.java:683)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:745)
Caused by: com.enterprisedt.net.j2ssh.transport.publickey.InvalidSshKeyException: Can't read key due to cryptography problems
    at com.enterprisedt.net.j2ssh.openssh.OpenSSHPrivateKeyFormat.decryptKeyblob(OpenSSHPrivateKeyFormat.java:127)
    at com.enterprisedt.net.j2ssh.transport.publickey.SshPrivateKeyFile.toPrivateKey(SshPrivateKeyFile.java:245)
    at com.enterprisedt.net.ftp.ssh.SCPClient.setAuthentication(SCPClient.java:520)
    ... 35 more
Caused by: java.security.NoSuchAlgorithmException: Unsupported passphrase algorithm: AES-128-CBC
    at com.enterprisedt.net.j2ssh.openssh.PEMReader.decryptPayload(PEMReader.java:191)
    at com.enterprisedt.net.j2ssh.openssh.OpenSSHPrivateKeyFormat.decryptKeyblob(OpenSSHPrivateKeyFormat.java:99)
    ... 37 more

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DES-EDE3-CFB and AES-128-CBC are both supported. It might be that your vendor is using a very old version of edtFTPj/PRO that is prior to these being implemented.

If that's the case, you probably need to use DES-EDE3-CBC.