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-symfony-13.0-wheezy-amd64-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:38:19 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 239a87cef4d949128e89a9bb481c090f20c5b513 * md5sum 13eaac9ca7f9fdef13fc0960a8bf9b06 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSc3aEAAoJEIXCXpWhbrlNW+4IAONGgXN5/Xd1/hgQIbgO8d9S 3ZYljm0c9USv2Kx3RDFJUjhr4D/v1Ig7zEmd0NRXmAuLVJjA5ncu+rE5WHphMC+m 2qtSh7gsoAuWJJUEXm9dGMT6IVC79fkGEUZzag4/9jIz/ZqwZi7ummrHWt3a921k ZjW/ywNBXTCx6mC9c1rGySCCk+EfB5yme4sGPQTCyAq55TIrhlo6dkUQ1Wt9/in0 8NGHo+xQSgV3iCeGQ4/ZKUruCw1ayt3zjGFfo9T//MKxOtLq0G9EzqCB6r17FsyE zKPG3Q1B7TZpHicbmnm25803cFbNtlkdmkiXXAXA8l/nEAstpozE2e14T/h0igo= =WBg5 -----END PGP SIGNATURE-----