Lukasz Lech created KARAF-5073:
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             Summary: OpenSSHGeneratorFileKeyProvider is unable to write SSH 
keys
                 Key: KARAF-5073
                 URL: https://issues.apache.org/jira/browse/KARAF-5073
             Project: Karaf
          Issue Type: Bug
          Components: karaf-shell
    Affects Versions: 4.1.2
         Environment: all
            Reporter: Lukasz Lech


Project: org.apache.karaf.shell.ssh

Class org.apache.karaf.shell.ssh.OpenSSHGeneratorFileKeyProvider has method 
doWriteKeyPair to write generated SSH keys to the disk. 

When I run karaf and log in with SSH, the keys are generated, but not written. 
In console stays: 
> sun.security.rsa.RSAPrivateCrtKeyImpl cannot be cast to 
> org.apache.commons.ssl.PEMItem

After inspicing the implementation and comparing it with the 
not-yes-ssl-commons code I can't see how this method could function for anyone 
in current form. PEMUtil.encode expected the collection of 
org.apache.commons.ssl.PEMItem items, which have no inheriting classes nor 
implement/extend anything. 

*Probably* the correct way would be either using toPEM and formatRSAPrivateKey 
methods from PEMUtil, but it doesn't seem obvious to me what method is 
symethrical to the constructor of org.apache.commons.ssl.PKCS8Key.

One is sure, doWriteKeyPair with current codebase can no way work.  



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