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-couchdb-12.0-squeeze-x86.iso.sig gpg: Signature made Sat Aug 18 16:59:42 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 9e63479913ae02390c2217f4779cf0b6a6dad9f0 * md5sum b0dcb1726149ce4dce8f1abd147daaa5 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) iQEcBAABAgAGBQJQL8n0AAoJEIXCXpWhbrlN8moH/1pXwUdk6w972P/NsTlSt+BI lc6+9lc8lKHuyf2oK2HQiMdH8PXigIUOpr44GdVi+iAt5EMeRO6MGBFmZ4RcL6/U wLT/vROr4ipX3g84PqwtKk8+ckzmSgeX+l2GxdzYA8q69kA9xInzT69ox2jB+j+t DNZ2qM9zEGt38txjwzLtbya4MeTo4ZZidKnHAMGQoKcrxEE3fFYZwiL5pIWAvDpG fVOb1vQqdZhdKewWvm1uRS7bqQOGtIC6W11FI4pWDZiso8RPb91jVeN8+4VrzO9P W3F+serU4T5ZGDoZyuJU6qFj5QIs1TNG1cRG/hOHuNlyxzh1Ezhloz2gZp52In4= =rNIS -----END PGP SIGNATURE-----