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-web2py-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 10:41:37 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum c5bef3a599f5484cca307f13f669dfff17c606e1 * md5sum e15142a16d4a13c4dac57bb3e5370404 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) iQEcBAABAgAGBQJSXm1YAAoJEIXCXpWhbrlN76AIAKTtHl/Ynd988Pgbf9b+VRc8 1W75TCp8+UCiKb7+LRUbTOkDNQADkS2q72iHTIOQ0bRd44762pL4ViPXMJGRHEDR EHCFgC1hxAXE8TX+5KUP1fSEzo+CQve8JqXKtGyI+HwaNJPBoQuILBagjK+0bwuN k2EPzg5SELJ6X0ia83BHvNi1JUbgct9DuMFfP3wuuHfAXK86uJOiIK8U+0wQh027 pXqVOlZtl58rXhCECco9F5PSNp3TNO3RfrByPLY0jU8E7bFtINfO8YceyRQUXZza Dn2xtFD4/3Ffi3t0Bk76mauiWL/uNI1RknU1jNFPG8OworLG65gCLRjE/4gFjvU= =KJNa -----END PGP SIGNATURE-----