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-7-turnkey-piwik_13.0-1_i386.tar.gz.sig gpg: Signature made Tue Oct 15 18:01:52 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum d0c6dc4930040a84e85565dd1712239146b572ce * md5sum ffcb529bfd6679683c07d8c73d96347a 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) iQEcBAABAgAGBQJSXYMJAAoJEIXCXpWhbrlNsfgIAJxeKUl+0vtdMMPbTkQuxj3v CwO1Kl731/HFQZdOGi7/wweI5HB+sRyc19/rQTdzVv66CH6VsfT027ejCZuQ9esz KGnVHmkx6NUdzDfOobSEtlQDQq0deHwKUBoDdo0lfvAc8ctc7krgEss3PI6P8ckj 2CQv3ibluQbGPNJ05RI30zXIaDkM0sy9zXHYl3WXj+21btuiANeErwH8lGB937Zp verzDCqZiRwgVZ5TnYdOT7Tq0E7pS4Hf8dSblDZx/dIziLPrLXTXRFzL7edQb1EV v/7iHpPGazk9r5gHyqf+oA6a4sYuN9g83NugQ7C9Fhit8nG8NVbTeekJcfXm790= =4VQL -----END PGP SIGNATURE-----