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-moinmoin-12.0-squeeze-x86.iso.sig gpg: Signature made Sat Aug 18 17:27:19 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum ebc526bc162c72bdcaf3b35dc937cb3d80620821 * md5sum f96ba77fef000c94568bb2497e5bb6f8 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) iQEcBAABAgAGBQJQL9BvAAoJEIXCXpWhbrlNZ68H/RsBPqhOOuKZS4P0+a/iOiKS IiDPPZMIV46F6CT/Zjwd39u6yzDui0oQw0Nno2NY6iTHWjNbhVRu028BfGgC4enj Nk+JX+TPb92dw16v7/BmFpIN81UuyfJD4wDEwdTNxUoqLBxccWkklrQnHa3FCMfo 7jbFKfHAAt09xDx3eSkI0S1cUWq7+whkkOpFnd3YH303XBCz4e1wMKSq3+eGWTcT DkPTRIPP9877VfMRqNLZcPGBzNK8ltPstuD9wgcnsrzMpmNdAu2Q1QSkiaW/Qr3X fl1uL3j7G+nZmkP5VqQSClTS/yrR+JhiMz/bh5yh6dzEBlb0oi2FJW4dVuIjwQk= =sgcO -----END PGP SIGNATURE-----