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-13.0-wheezy-amd64-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:28:04 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 461614b5d1bdfba28ac5a5998ae5e33debd3661f * md5sum 6ecbde306861c24f46ac34ae77beb8ff 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) iQEcBAABAgAGBQJSc3QcAAoJEIXCXpWhbrlNvb4H/09VLQ63O917Tid2ZUcFa41B dL8xGubdHpeWTn1WexfVSu11UzOavl84jP76+i/0tqqM0//X4WH7EzEkB68ssNkr XnmQ8c019d8e4i7dUJKRv2CwrYbkU+AVE99X3G+jxEX+qTvO/a/0n/TKSpCoIJT6 WAgbUXeSLMwXLymC35AWKHF54NwnLCaVhYzPS+QoZWseORLhB0eVIt1/EZ4sUiwC 7GyQwiL6QubQW3W2NlWerO30YspIP/13LNSaZkHwZTxanvmLc5+qdMxaAjaM+voT cJ2j9MHUE2USxyGhQg2XTp4Wk2qMbxB4jjM5bIdW+5w7Q+1ArEnBcvDJwgMCbi4= =WTJc -----END PGP SIGNATURE-----