Function PublicKeyFingerprint

pkg/certs/selfsigned.go:95–98

PublicKeyFingerprint returns the hex-encoded SHA-256 digest of the certificate's SubjectPublicKeyInfo. It depends only on the public key, so two certificates that share a key produce the same fingerprint. Note that the operator generates a fresh key on every restart, so its fingerprint is not stable

(cert *x509.Certificate)

// share a key produce the same fingerprint. Note that the operator generates a fresh
// key on every restart, so its fingerprint is not stable across restarts.
func PublicKeyFingerprint(cert *x509.Certificate) string {
	digest := sha256.Sum256(cert.RawSubjectPublicKeyInfo)
	return hex.EncodeToString(digest[:])
}