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-drupal6-12.0-squeeze-x86-vmdk.zip.sig gpg: Signature made Tue Aug 21 13:14:29 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum f99f9f761f7938a7a25f35f951dde3ec60a37aa1 * md5sum 9f5f592244e6a1e8c3a878f2c416d0b6 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) iQEcBAABAgAGBQJQM4mqAAoJEIXCXpWhbrlNkzwIANTTl/5VSyMu2trRnRnEegdX X78lFu2Q+/zHYHLiTOikH5+o4txhtbsY7o2tJ9Qkko3fY5wtSLDhxtE9w0Hh5jU3 lj0y7lx8K9l/AE/oH22oWqiv55xintkx3iOEFUN6PM7gN0GLzCVKtcaBuVq0vmW0 0QYJARHb5+KE0V08cOo0DSqWIQyBDwLGJHbSaQMTA/NaDCq5Vog0VZrLBy4JubO1 FvkbFpRZZ6FhC7hYPnFmEsk+mqYUcZ8aY88/bDYVfwoaqZfl8JaD2l6FO4ZkeKYC nMtKmanx7xdUaf41yPFoRpTQW5hUOCIDQilTaXzafsmjVy3tqlTPhx506uFxjyM= =Aohe -----END PGP SIGNATURE-----