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-joomla25_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 16:17:02 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 2a36f10a56ae76fc083069d2a1cd16868c9cba90 * md5sum 78ab35b43ce8e49ebe2d44176db1a0d7 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) iQEcBAABAgAGBQJSXWp2AAoJEIXCXpWhbrlNwKYIANm1Kz5y0cY8pW7CKyUoGSWf YRLKEfHXh0pHi7jaJ7q8EhKVdGUumwFlhPFuvMWlxPIRh9vsAZyTmaoFPL/i4w/L CHwUH/5gnH3KnhZYjUj27Vxgvyqtk6JyaRwG9djut6NP7BnpgPMMmT8iV7AWuIM0 z8HRMvUDP0GFpr/nmrkMK4oim4Uxx7Qh5HU9y8ldlq8OxmIXC1I8KxvTjQ/j66BL yaMtpuzLXxhvOOb/ZIiRcN8K73BG2jkRshF203TW2f4UAyHFduYbb3+M0WpDAOCO NBs0rV4y3lJjsXzmPOhOrpF/N7EnLmpcVvQxDQnzi7PDpInl1axsPOdR2Q1izA4= =U/I4 -----END PGP SIGNATURE-----