This signature file may be used to cryptographically verify file integrity, like this:: $ gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 0xA16EB94D $ gpg --list-keys 0xA16EB94D pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] uid Turnkey Linux Release Key $ gpg --verify turnkey-icescrum-12.1-squeeze-amd64-ovf.zip.sig gpg: Signature made Tue Jun 4 13:40:45 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum d91cd924de84cd15bbbd1fd6d86bdaab2710311f * md5sum 4d68cef601aafa2e90ec5d16dce42915 You can calculate these on your end and compare to check for errors, but cryptographic verification is recommended for security reasons. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRre5OAAoJEIXCXpWhbrlNxcEIAI10QnQZYHCCfaKrYkjQ5NeC fkjApJoV4u2Uge9e+nhG/wYWIp8sYmgp5QE/U/edFFvxCdb099JbIOIYtWxgr/qE zgQ2/0oiR+qnesLxyWAkmC1nmfYAictDrjvA0Mk5HpFp4VlvU5yJAh6sjy3XAkQ6 HzvK6qLyJaZhHolsZCRNfX+DYi+Z68AVaPdP19n7nBPk9B7lmcohYhFEKNRhZv9P zBBWLvgeLDuraR3PFTkalY/7UlE/+KOCKDgFt/YOIn81eADQ6R7mHSFstf1xADQP XkbSl0jvyJ1qQNYbqlmsSszCQ7fOW/EoqMOCZ4yP6EDK2Yo2xam5s7xJHL2Fv9o= =G8Dc -----END PGP SIGNATURE-----