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 debian-7-turnkey-tomcat_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 19:38:02 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 61caa97ab8a2eb7ecf94281c9b85f87f38494b05 * md5sum 9884fbe4436a746d3c930d1bebc9bc2f 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSXZmRAAoJEIXCXpWhbrlNX7cH/j12Sls6uGXp29jbT8Eeohkn 7IMqBaLOBH5ZC6pnqN7LNxKV7ILHEweE7iVuFREt5xFPf4llZMxbDHcPVhysWIBp 2zih6RIBl4fzDq0r7j2lia10eIKPqsncxbtGDvYLYE0U41wh4unV7fkQxzWHeMBb ADbTVwXxGC4dArdszXc2AOjv6ValaxLH0mh4BIuEHSqTi4KxqBuS5wpSFzRVUqCR qeON2GvHjUCfYgXJ6URvezeB2RrLxG3PTLFLelD9GNcbbIes09Swtczq75LRLQEN 0Wy6A5BWlshMb9xuva2OYXVA1NaXyT/RLPWMhwynNvv0vcXYVnnitzIVt+SZQoU= =Nwtv -----END PGP SIGNATURE-----