Errors

valid_signature
Old SIGNATURE detected. Please inform the module author to regenerate SIGNATURE using Module::Signature version 0.82 or newer.
gpg: Signature made Sun 17 Aug 2014 03:14:10 AM JST
gpg:                using RSA key E270A9CCFA8BAF33
gpg: Can't check signature: No public key
==> BAD/TAMPERED signature detected! <==