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-openldap-12.1-squeeze-i386-vmdk.zip.sig gpg: Signature made Tue Jun 4 22:29:37 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum bd53f0e141bd7adb8799845289a8a942a569e327 * md5sum 419c9729609eb494a039d723cdc98375 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) iQEcBAABAgAGBQJRrmpGAAoJEIXCXpWhbrlNTj4H/Rq9VhHKJ0dZ+u4DHQfVXq4V 0k5f8xc4GZ3FrxoGfQ3/qGmb9KdQOcUsVycS5gUK3rzj3G6SWkJ5Hnt9b3PV4rj4 BLrxhdv+OUXTROsYKoPwKtViJ5FAQS/SRg9prXVBRCHgzcWo2OKowXtyNtmZgqcH R2WnMVpjfrxMOVix+DSboNG6eRHK+T3+0fJHstheWG4XtY59DSoOcN4JYWzDLVlk A5tAp38FcpboY8dSrEplUZKVVHnctRETNCQFd4xL+qQfph+ljOZbn10hiXOrmNiB lkTeMcBmjMlqMA155QDMrBfhj2Gt5xb3NDZyT4RSi1NC/JvuoS3sDdxdPEKIcpQ= =Wdie -----END PGP SIGNATURE-----