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-vanilla-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:58:53 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum a1855862effc2c0918016ae23c96fe6899e54b16 * md5sum 9039688c8f5f51792696c2337b622a83 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) iQEcBAABAgAGBQJSc3tWAAoJEIXCXpWhbrlNV/gH/AiccgY55QO2DNtXDjXmH/Aa nyQ46KJmTKIOm5CDtdGgxsMp1nLZz/W1vD+izoqYtyz9Qn8FfVL1YwrGMko9AxHK Jdg+2H+5dg4GHuw2bvY4hUp7L7ILDntFPRxVzRrgAeF95uE4eg8Q/4ccDz07vXh3 meD4hYhbSeQUEJ9mDZc2lV4DOIDwNhXPsxlxPIV2TyVkzLsCMlES5l9RkZpK3EZd TDxkvUAiH9yvaD6VyST9nY8+D/1qPr56tly0YvTWnydRyUC9a3TCqvAKOGuxfhhv 1OXl0yThEPPhibmYjj/ecMntQmfiFij3nBZW/1lBWdDLCTG9SC59QLwnIF2MF+4= =sGXy -----END PGP SIGNATURE-----