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-trac-12.1-squeeze-i386-xen.tar.bz2.sig gpg: Signature made Wed Jun 5 00:58:09 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum eec6dd2f6c49be195d443ec275720034d721aa9c * md5sum ee1d18ad869d59bae9167115736d0795 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) iQEcBAABAgAGBQJRro0YAAoJEIXCXpWhbrlNUFwH/j+zcU9HkiRzjbGYGSgWMuU9 0UbJjli1/RC1I4BIuaNduNEGfzg2RJ5eXrm1NXt2axrEuUmmjvXCx/fMymXER7bu 2mkEQYpTULCBWvVMNQ8IUlAEJ6ZlOwubAuTH1lA1D18Dqp+qicq4MHgtwVE12QpQ RJj7vrtxldpnySHTR3uGKa7C+vS2mlvJ5skgFt4AsUPTzuDnguoHBcJ+16AMEHIo EscUkGXRWmoQlHDXO0t5/raFIumI15d+edBxDbR4VmPHErzM3mKi00hgPA7f/pik biE7kGrwsecv/ORWmvRvGLFQDqsCzL6Oeith9O9OPt4dWjD34qh/229i0Ftat/w= =cKNV -----END PGP SIGNATURE-----