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https://issues.apache.org/jira/browse/KARAF-5809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jean-Baptiste Onofré updated KARAF-5809:
----------------------------------------
    Fix Version/s: 4.2.1

> 'simple' host.key files no longer work
> --------------------------------------
>
>                 Key: KARAF-5809
>                 URL: https://issues.apache.org/jira/browse/KARAF-5809
>             Project: Karaf
>          Issue Type: Bug
>          Components: karaf-shell
>    Affects Versions: 4.2.0
>            Reporter: Johannes Utzig
>            Priority: Major
>             Fix For: 4.2.1
>
>
> It seems  that with KARAF-5286 support for the 'simple' host key format was 
> removed.
> If one tries to connect to a karaf instance that still has a 'simple' 
> host.key, it produces this exception:
> org.apache.commons.ssl.ProbablyNotPKCS8Exception: asn1 parse failure: 
> java.io.IOException: DER length more than 4 bytes
> It seems that in this case the SSH server generates a new key in memory 
> without persisting it which means that on each start the client will see a 
> new SSH fingerprint.
> I would like to submit a pull request that falls back to the old format in 
> case the file is not a valid PEM. If that's successful it would replace the 
> host.key with a PEM version of that keypair.



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