Errors

use_strict

Crypt::Image::Util

use_warnings

Crypt::Image::Util

valid_signature

Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer.
gpg: Signature made Sat 25 Oct 2014 02:55:10 PM JST
gpg:                using RSA key DA172575A8EC2FE9
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==