Explain how to convert a private key file created with ssh-keygen into a single line value for the configuration file

[jmcclelland]

Description

In the jigasi README file, in the Transcription options section, there are two places where a variable to hold a sha256 private key is described but it's not clear how to convert a private ssh key file into a single line variable.

Current behavior

Currently, there are two variables: org.jitsi.jigasi.transcription.remoteTranscriptionConfigUrl.key and org.jitsi.jigasi.transcription.whisper.private_key. Both contain the description "Base64 RSA256 private key to sign an ASAP JWT with ..."

Expected Behavior

It would be helpful if the description could be changed to:

Base64 RSA256 private key to sign an ASAP JWT with [....] Generate a key with ssh-keygen -m PKCS8 -b 2048 -t rsa, then remove the "--- BEGIN ..." and "---- END ..." lines as well as all line breaks and spaces from the private key that is generated.