grub: list_trusted

 
 16.3.41 list_trusted
 --------------------
 
  -- Command: list_trusted
      List all public keys trusted by GRUB for validating signatures.
      The output is in GPG's v4 key fingerprint format (i.e., the output
      of 'gpg --fingerprint').  The least significant four bytes (last
      eight hexadecimal digits) can be used as an argument to 'distrust'
      (⇒distrust).  ⇒Using digital signatures, for more
      information about uses for these keys.