This plugin maintains an RSA key pair that can serve as a foundation of authentication when communicating with Jenkins.
Each Jenkins instance maintains an RSA private/public key pair that can be used to uniquely identify Jenkins. This information is called "instance identity".
From outside, the public key can be obtained by sending the GET request to the top page of Jenkins, and look for the X-Instance-Identity header in the response. This header is always available, even if the response is 401 access denied (which can happen if Jenkins is protected via security.) The value represents a base64-encoded ASN.1 DER serialization of X.509 SubjectPublicKeyInfo record.
Plugins that run inside Jenkins can access this key pair programmatically through
the org.jenkinsci.main.modules.instance_identity.InstanceIdentity
class
(add a plugin-to-plugin dependency on this plugin into your plugin).
Current: GitHub Releases