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-yiiframework-12.0-squeeze-x86-openstack.tar.gz.sig gpg: Signature made Tue Aug 21 16:51:52 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 785d6f8311a9230f91837f6a3288a97edd5534ac * md5sum 4d631cdb29d6860b70dfdfec1e08c5b9 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) iQEcBAABAgAGBQJQM7ydAAoJEIXCXpWhbrlNBsgIANEl18yp+CtujBdVuA5fAidI nIbyWWD/jIoKxFQNqjI+dCBzvsGMoZg38ifrmOoTCnGwbE9YaR/8vGMg1PbtY9n0 EQjciOIMsM5pl+Ym/p4db8y6pargKeU1EAKmq+QlPG0pAIGJAnlJK93We0yhVk55 kRCG6UW1vsnWeWjjEibaRvil+d3o+trRVEh73e26g6HiHlOzWbqvAwt+hx8+pHcR JB1TQ/Anf4mWJ20VnQzT7XtnrwUBoKE/sQUEKyvpZh8jCtACBodE55OMkZwlV2ee BQxl64V3GyAbrtgSfDJNkJyfa0xDXzkSJuO7ZcYGqwtUA8p5h5AFfC82GZkyITk= =N6eT -----END PGP SIGNATURE-----