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 debian-7-turnkey-sugarcrm_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 19:08:09 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum fc9f3087a9b6fc39897d5c2fca7f2e9188d667e4 * md5sum 787b942079afcc5286846bc1c2e79b47 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) iQEcBAABAgAGBQJSXZKRAAoJEIXCXpWhbrlN+JYH/3kGuqQK9iwWTRepO4Hic55f U8yJmh+zZ/nwCgFjA3dT8wIeOuqALpM48qpKaH2us+bkaOzeBO9Epz3ouI70lV1D IqOfpvFJXQP25wphYPcPLlig0iF9foA8ENcyUwgKgUzLjHKU4tluVdngGPgFMf9r 1X6Ezksj4dsK5nSNVAhLkSmvBGamYM2S84k3hYIFX9QbRI5H0H6G7cqUVgCQYoQr 055Y+CFE+X63oSdGjEhUp0XW3Hkjx1z6iF30SDnk+OFAjcwk2oe77I6n1Ih6VltG xHp2qmCjsVjvG1uyDiLuNJNVhDUoA474iH2y78JLK69RXbedZzYoUziv8COgaTc= =wabW -----END PGP SIGNATURE-----