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-drupal7-12.1-squeeze-i386-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 21:02:37 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 689ff4740f105960669785245bf079effc767252 * md5sum cd79ff3898f79eba25e899fc96248405 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) iQEcBAABAgAGBQJRrlXiAAoJEIXCXpWhbrlNtYgIAIusRU0FRMwijx7Z9AnGx326 GT3fBJyj2qAHS2pze2mLWA3ontcCv5/O564RrqC6posa12tH2lP82bik263qk8+r InQp8e3+I6I9yTAo1SolE1UvyaQ16fA46tPrhg3ha14wJ2XaraPl4t0Upq7AJhFZ X/nCVySI2Wgj+phh46foPD3pjGwK2umMvSJ8C8WEZ5XT3q2m3khHuc8nKISE12ds iOmYsWDHZ0su5Y0QhFXcacUqTikXCqg9uysSGerYnf+1DKD6DIq6RtW2rKA2Tky7 iEvV3STKNpGGBQcSHANkHEc0pWdfj6xbHE63KKsaa1mzp+cm6DAoBB7qCqT7i3Q= =GPs7 -----END PGP SIGNATURE-----