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-vtiger-12.0-squeeze-x86-openstack.tar.gz.sig gpg: Signature made Tue Aug 21 16:46:34 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 636ebc956db06a3fa00087ade5c18183c2031b32 * md5sum 496b7ccc86ce7b25af3930933df99e97 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) iQEcBAABAgAGBQJQM7tdAAoJEIXCXpWhbrlNqoYH/jwTdK0Gf+ny0xoHQXwXb35R 53Kxu4tVKticDbYxBJiVXglrMeHauEjhu/2mIQR02tW1zlhBdBJC7gtmkzNwZ/aA JjdAcUFmsr/7p7PFE0Lu4OuNLxuvRlYaXs/fWANYGUFpRjfvljEwc1l/nMx2gyqL bg2iiNEgbEAnXhLmi8fwsmVqA9XjV5bHwTwe80bh8+1axD+0O3g345iJymkxn+vu KYM/6jAryB9cKK2Ba5le5trp7hxmdTpP8bX3IyINZykoVwFXXB46zh3X8oG2vYY4 5kXD2Dt51hkLe1mO6lrtrnbkZyUJ76AkxKPJwISbZceKnmhBGKQPGwvIIGqNPD8= =n1U/ -----END PGP SIGNATURE-----