#129 "JSchException: invalid privatekey" on OpenSSH 7.8 and above

[eed3si9n]

steps

1. use JSch for example via JGit with private key generated using OpenSSH 7.8 and above.

problem

See for example https://stackoverflow.com/a/53783283/3827

Caused by: com.jcraft.jsch.JSchException: invalid privatekey: [B@e4487af
    at com.jcraft.jsch.KeyPair.load(KeyPair.java:664)
    at com.jcraft.jsch.KeyPair.load(KeyPair.java:561)
    at com.jcraft.jsch.IdentityFile.newInstance(IdentityFile.java:40)
    at com.jcraft.jsch.JSch.addIdentity(JSch.java:407)
    at com.jcraft.jsch.JSch.addIdentity(JSch.java:367)
    at org.eclipse.jgit.transport.JschConfigSessionFactory.getJSch(JschConfigSessionFactory.java:276)
    at org.eclipse.jgit.transport.JschConfigSessionFactory.createSession(JschConfigSessionFactory.java:220)
    at org.eclipse.jgit.transport.JschConfigSessionFactory.createSession(JschConfigSessionFactory.java:176)
    at org.eclipse.jgit.transport.JschConfigSessionFactory.getSession(JschConfigSessionFactory.java:110)

expectation

This should work.

notes

https://www.openssh.com/txt/release-7.8

• ssh-keygen(1): write OpenSSH format private keys by default
  instead of using OpenSSL's PEM format. The OpenSSH format,
  supported in OpenSSH releases since 2014 and described in the
  PROTOCOL.key file in the source distribution, offers substantially
  better protection against offline password guessing and supports
  key comments in private keys. If necessary, it is possible to write
  old PEM-style keys by adding "-m PEM" to ssh-keygen's arguments
  when generating or updating a key.

This is affecting JGit and their users https://bugs.eclipse.org/bugs/show_bug.cgi?id=558448

[Radu Coravu]

+1 we are also interested in having this work for SFTP connections.

[Tobias Hochgürtel]

Hello Radu Coravu, It looks like that there is now someone how forked this project https://sourceforge.net/p/jsch/bugs/119/#efc6

[Radu Coravu]

Thanks Tobias, I will keep this in mind.