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-prestashop-12.1-squeeze-i386.iso.sig gpg: Signature made Thu Apr 18 13:50:47 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 3afd231c4708d8f8d032cf66d575d6accbdc880e * md5sum 03a97d56b407bffc065756971eab5552 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) iQEcBAABAgAGBQJRb/osAAoJEIXCXpWhbrlNdwkIAOMx5qo8kWsQfEEGeR+IC2xZ x3wH11d/IlmJZMH8dXmgRr8tmQO1CN+Ljfe4sLDaLOe3d0/6F1QT1/r8gdscFvsI Wkm32B37OjfqrTPn3HLwAvyfTEuVo56wBCEkoIaVn4d6po7WmDLx9E62aaUPfPK8 qCJkiMn58g8HYTJIJFAU/RewlCyRspZSa1xYXEfdYhV3nC2cO+3lOtR4fmebe5LK rDdj6swlpfE8+RO6pm7+QZR5girZl1IvHtq8c3N+b93vTHe1cJhJs5uhXhDWZrbA BIjBkmQ9RfS+qqfOy0vJfnEIF5trpLUt8RGQzzmFsWwa+LS49L5yeEoL3G1x5Sk= =Ij8W -----END PGP SIGNATURE-----