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-tomcat-apache-12.1-squeeze-amd64-vmdk.zip.sig gpg: Signature made Tue Jun 4 16:23:19 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f321fbb6a139b8ab1e83db87e32de418926152d9 * md5sum 410c950d0cccc131161dec986f1d0288 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) iQEcBAABAgAGBQJRrhRsAAoJEIXCXpWhbrlNg38IALJkOr6DJ9tnDisIzokjUrm1 GAaU9s4OnzbPf8Pjspw8ZTQWomkV+l9kGPDkPP2fxyOCl6YvECPMfkbfPCAqRq4X PRkB68mrb5Fcy0Vn8IkwXpQKdNXJJWPrNRYl5pKAnDCquIoxCBdSed4/6ZEdz/J7 0BNDH5cMLlxiTdndkzdOYd1UhoG5uKlPC2NRXd4QMoKIiE3AqUWGNZK5Dv4p7KDg yofRtTYlKlD2m8SXLNf++Qxr6PFu1vcOWoc+Dc6iLw5NkFh0NE9A97UwvtnF4DVE nVf6j4sg6ZBkOYokTffQeTD4RFaKySOrC946BGXqXUoCqgJ83f/810IQ5z/xsSQ= =EY/Z -----END PGP SIGNATURE-----