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-vanilla-12.0-squeeze-x86.iso.sig gpg: Signature made Sat Aug 18 18:19:57 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 5ac101eb1f644a9892f754985a6a6b56feeb121d * md5sum 0816eb005c4e68d4c5008cfdafc277c7 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) iQEcBAABAgAGBQJQL9zEAAoJEIXCXpWhbrlNczoH/0F9ZFV/vV4xIZhtu/61MtlT /n22zW0LjRCaMJNmsQwsLwgVv6k1K/mKRaLE1FqywDG8gJ2SDCS7o/Wyeke7yut3 k2S4OrjrfbgTbvrqbcF5osjHEY5JJyXXOfgtaNB8hi9oBYJKhIOaqnFJ+S0bUkGb JhhanYijEIABMgs4w2WnHX60m0BxkKs71xPqQYBvxipkSj9mjACAeOu4rmd3NL3C hB5xdlXbUT2oUhr4LeWsyvYpBVDJY0YjT053Ixq3PYMWkxKyxfWZuokX4Udth1Ae DUy/RAqa1J3O+jsfXClu/5W6QO/NvkbTumcbGF0lN1bI6LuHXiRU5bO97nZyaKE= =GgL9 -----END PGP SIGNATURE-----