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-xoops-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 12:42:10 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 73a2e86efe9be4a15907ed71985bc96227827a48 * md5sum 01eca7bf4074172b2a2c3679755b578a 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) iQEcBAABAgAGBQJQM4IXAAoJEIXCXpWhbrlNyzEH/0+0ESleJPNK5WuktBrw0ve9 /ELsEZF2Q5EqYiJzzfb4zASl59EkcOCOs5+HOpBcrJ/x2vrHuR/ctEzzCCTdSu8r QJIwXuKHqL4mK95f8M0OHfdGOB+AEs+ElnbmfWRVtDbhmgusBSDNXTV0Lq9LoCFQ yFn/YoxLtcv9oTLtlq72yuABgt2ompiqAp69bOHAUb1jXkV/X14J2YuLMlkP8qdz tPWUwo2GEVzLk4iFpR+UmDTHALlHThgZSYkwvs1+4ao7tvxGa8ehbCPyoikj8xQ4 YGsOrQt6Fv5bKG2TbLyjLCGqErigDtlLyyBRQ+pk1JIebM91YDrOc/T88r7Isb0= =F5gS -----END PGP SIGNATURE-----