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 debian-6-turnkey-rails_12.0-1_i386.tar.gz.sig gpg: Signature made Tue Aug 21 14:37:28 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 95c92b2ebea07227c372c7fe83670e87be038e50 * md5sum d6c02bb52b4e34675ca0b8a1e1d499e7 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) iQEcBAABAgAGBQJQM50cAAoJEIXCXpWhbrlNnmkIAI5M1AUYmv1M7Mm61n4FElwk TMqJvstJ+vZF1Njm+hPqEZIhGiJdhlLZPfmwMwPRLutbnfLw/mp6G409ShUTPjrE 5RdBq3b47aAJHG1poV/H05M/qtAIBTwGuivuV4lAYCVQnzh3m8Lc3M7Bos0phCB1 fz1PkmJNB9vMigqtP0Xj92YpOpqb8HMClHV91FvCAsNtccbDPZ9tYiDnBO6YdfO1 CiNqPJ2Sy/5TWnItFfaSpWjl8VyGgZmXjksshtDLtPHwpdMz08oQ8msqB0GR88Er CDJMoGGc3lbcbTM1cDmS85CKKCG51pJnn9rWTDU8kox/VW/2B2BbswbyLdLgVc4= =Z8sW -----END PGP SIGNATURE-----