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-limesurvey-12.1-squeeze-i386-vmdk.zip.sig gpg: Signature made Tue Jun 4 21:47:36 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum a91a7c12c02d82c5478d02b6bdfaf5bf0e33bd0f * md5sum 4e510c9a8cb1881221636b59ea7abd3e 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) iQEcBAABAgAGBQJRrmBpAAoJEIXCXpWhbrlNpakH/35Y36saHVJTIaZTt+KmmQXS mcdyQYgLW4dN0WKwA+LcsnnxWOcniqCDSTrJkQFPR3BCDkVOtUsKkTiEdYGhFz8O F61+rFgUktVXW0K/MtU3NQnJhOdtVNuD687imiB3Wjz1uECqnYwcbvpcxHd8NMds H7wIt75ukX8hdN5bVcjOmlvGaZYKAfmKzYE86/goB0P77oCOwZxdRvcwMyUbl9BI rMoH/FsB6y2Rqvkkr3DM7V50+215UVyzPUgwsF5MLPD3QRFELWZS5G/HRs6zKrrY REMoun6ytX3y4UuPHp/oEIFkYY/K8DLiIqPkLTJdG0jKhkJBEKPKqGBw/HI+8Os= =Bt1V -----END PGP SIGNATURE-----