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-oscommerce-12.0-squeeze-x86-xen.tar.bz2.sig gpg: Signature made Tue Aug 21 16:15:13 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 271536dfcb6389b7920863dfa9c14c794aa157b4 * md5sum 20ab4f7499c9010056ad44cfa26f3a1c 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) iQEcBAABAgAGBQJQM7QIAAoJEIXCXpWhbrlNngoH/2Z6oUhRB5sBHlzGcDqmyuq6 CYZpvgcahoMzNd//rUO7QGIX1xZ7OJPlAdjGiUghdHi+ujEEiYqTnA5lIGUeuSyv QLn4UHm41bF+GqU5+dd3pq30tkQ86LOQLPHzzzmhV0hNlR60C/I44hNxu5YnkDW0 3Mbkkta/WmFlDdr69LSeQUuumtUSJCTrKXMO2PPelgj5cXe+gKF8DwKenDkWRkn9 u+GLkQI5QjLgwy1Y7SzDRLN5DH4dXMESG3iLTA3fa2K/aQbAYuxn7jFGlp5hmCkt zy0cHrpdm7BYU4A1R3qXFHvJvg7LH1GWZ7SclKboUo7jVNJsyWE4ER9Yijeqq34= =6CLN -----END PGP SIGNATURE-----