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-canvas-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 08:21:14 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum e78f638e1e24eaf70e98b56d04117a769300007b * md5sum cf23fba2ddca1f9cf5f2e4d9c152c49e 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSXkxgAAoJEIXCXpWhbrlNFpUH/ilyRum+VFQrTq8KI79bHS9P yQQ2/Ca9dZZbALL4qqpu/nmYnf/HJzwSYONxAvx4BBKj4yYnupPRwLJNYJB7rAgZ hGfgkEhZe0cYZNoiPdH+Yw7F9MQSsswOe/kn8PBPVaQi+joTgMrlKy2bwO8Rqw2q pUoLhIWBttTo0RvCLvqcy2gNQlrlRxzCJ+SqBtZC8BPFC5MwvDHd5B+BXvOsLAf1 n8L1hWnX7tL8K1uYUOE+BKsJlAnAkXG2ihseP5Lzt4/cBrIr8q73SorsARCHIzxt gtPKXKgh+/ZuapwGiDr6zVcDIMw6x982N/tcqFiPd0Fz9Qq71fmGuWW0NmKZ/iw= =a/Ny -----END PGP SIGNATURE-----