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-piwik-12.0-squeeze-x86-ovf.zip.sig gpg: Signature made Tue Aug 21 12:13:53 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum c3d5f58c0fd8913cb02e0c03f06acf36e7f17984 * md5sum be030e224da0391a9c6a02df2c4e4f0e 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) iQEcBAABAgAGBQJQM3t1AAoJEIXCXpWhbrlNXSgH/0uDbWXje/apl2QDSMll07gm hWT1Qa8ILWqCxi6/8AihMdqdzNvG/pbPP11LvV+eKvc6GcZFw6d4hyNSH20RcOzF DNZh5K9rBVvMHhgnH7hGr7eOZHHoCOuoDOecATuRLCn9B8ktBQyFqdDsHLNXpJYs xCebNFqv3qGXYmx90yMfNgDDi/fN6GFgwHIrLKDwL4jS/Jw1odSxrnlwUKCHprO0 /RCXyXPJuwskpPt5Dw9sbJLJ7GYXMHxVVsBJ2r4LTNcsz64NWHoieyqr00E9K/KB 5iUSSFVwD4p5hwfllsluUPl6zFs8H/8X4jvpvJJQjllln2mIvoH6az0EbC+xYPU= =fAqk -----END PGP SIGNATURE-----