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-sugarcrm-12.1-squeeze-i386-xen.tar.bz2.sig gpg: Signature made Wed Jun 5 00:48:34 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 063efa5fca12e99517cf714d33e1995336a3aea7 * md5sum 66746ccd65ea01b9a3c38f9096184c98 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) iQEcBAABAgAGBQJRrorWAAoJEIXCXpWhbrlN7JkIAOvgJmVB/XKR1U3cmKZwk6M9 kvBkb3CbDhbSfHwFSwK63aBQoGlZn1iw7L9EAwJ60+IOmjaBn3L49AVMYcB3gtFS DMYdgvC1CFqRapXA6W4QdlLL2Qrxmtj0D2wIahke/INFU70OEin5NSGrz7wQ+0Bv Dza3e8BrK68fGfFssOcxWS+7FxyKtSqQPZDay38ZbpiERWvGTpisEMNb74tRsQvh YAqT3KYkGzqxUq33W5DK/G/7uhs6GYil5xtYLeRLvjpUVFTqD0w8bFCwJQvmBL1m F7KxOtk4khxIETbAA5Y0ehgP7V6pPg0zHTKDl4D80Pjm8y8WkhAIPkMswjdDrmo= =TglT -----END PGP SIGNATURE-----