edDSA provider not supported WARN in logs

Problem

edDSA ssh key won’t work after reinstalling the Git Integration for Jira app.

Diagnosis

The Git Integration for Jira app (GIJ) natively supports repositories connection over SSH using edDSA format. However, reinstalling the app will raise a WARN error in logs:

• Disable GIJ app in Manage apps
• Uninstall GIJ app in Manage apps
• Install the same GIJ app version
• Do a reindex of the same SSH repository
• Error in the logs is seen. See below.

Error:

2022-09-29 12:10:42,687+0000 sshd-JGitSshClient[7e4b4a97]-nio2-thread-2
WARN admin 730x8551x1 rqwibt 172.17.9.3,192.168.32.1,192.168.32.7 
/rest/gitplugin/1.0/wizard/validate.json 
[o.a.s.client.session.ClientConnectionService] 
globalRequest(ClientConnectionService[JGitClientSession[[email protected]/140.82.121.4:22]])[[email protected], want-reply=false] 
failed (SshException) to process: class configured for KeyFactory 
(provider: EdDSA) cannot be found.

Solution

1. Modify security providers:
   sudo nano $JAVA_HOME/jre/lib/security/java.security
2. Add the following security provider:
   security.provider.10=org.bouncycastle.jce.provider.BouncyCastleProvider
3. In case of Jira 9.12 or earlier:
   copy bcprov-jdk15on-1.54.jar
   to: $JAVA_HOME/jre/lib/ext/bcprov-jdk15on-1.54.jar
4. In case of Jira 9.13 or newer” + “Java 8”:
   copy bcprov-lts8on-2.73.3.jar
   to: $JAVA_HOME/jre/lib/ext/bcprov-lts8on-2.73.3.jar
5. Restart Jira.

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edDSA provider not supported WARN in logs (this page)