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-trac_12.0-1_i386.tar.gz.sig gpg: Signature made Tue Aug 21 14:47:23 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum fa698f1ca9ec0955c839dde1d0a706161812cce1 * md5sum b3851421891fbe8393522eddbb2accbe 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) iQEcBAABAgAGBQJQM591AAoJEIXCXpWhbrlNY+kH/30oQ0sx4JFiuzMALa1tEsNj X8C99J/9GHWlxjgLyp7QVGcgwninAr8HKO5u3nbV2bDmXsw79jJDqMjRsCkGCMlf kOlWfSrPWEauxOww5b/+2FzCQqS/sv6+8uB3GvVNRuucJjuTU4hqAQYfkVfNA1Bj upXG2uynUqmmam2pi6MpRQCOHuTQ79eFjTxyfu8/I5tuwZritd/sXotW4F/ofTJC Nn3pTIlMSww6jmGveyO2ibNTmOeoBDuW15bBDcBKUWNOXI8zdHf6zpmTvRMhhd5M 1AcSfbMp6EspkGMo+b0I5ewbTrFLNcAK+vlwf9j/WrPRy1AIJjLpzh16vhz3XBM= =CyXa -----END PGP SIGNATURE-----