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-12.1-squeeze-amd64-vmdk.zip.sig gpg: Signature made Tue Jun 4 16:22:54 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum d50c331d18b9014d3e6b3acf0896758651792c9f * md5sum fc2168ffb31c9be88d91c2f8e05a5797 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) iQEcBAABAgAGBQJRrhRVAAoJEIXCXpWhbrlNJ6kH/1X21Wc+raiun8pW3rrzG7aI qaIoatQpWasnKotUQgKBWexH0XFH0mq0jOImZPNIVzm14Lq9JF+sUc+WZQkKA4yC Hi8KJAo8EkH+CdQU3aJfwpp7Xw+PbYf/1TXg5baXlhToHeZv88kt64hwtaunPZfd Q6dGLL8bxfVT/v5LmgOtLJqsrwQeUhl1o8gmneHQiu8bmP6eXXJ8rW1assdWJnX9 VmsphJYzCredPmrr2i0Z65CNDo8IaUacU4PH4DL4VkXxF0jBZyJXVuYHcZ4c1bHo CCHb2dpOaQEs1bZo9ndGJ21TadI02yI+pvJRsGI+w5Nlo25cT8Z+IWIoIVbQmXY= =ZMPy -----END PGP SIGNATURE-----