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-phpbb_13.0-1_i386.tar.gz.sig gpg: Signature made Tue Oct 15 17:46:10 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum b68112590caab1d661c7d37ec24d7feab62c4186 * md5sum ff1b47b8fbf28184a5a14102debd5d25 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) iQEcBAABAgAGBQJSXX9bAAoJEIXCXpWhbrlNSQYH/i+28pWkZm7TlB2V4eaM5xLw uzue1it+DYX/bSuCqCD76TCdzgrLIKPFDpejHPxNikMQ7nV2xgSf4wT29iDG7rB3 ZMocR7sZ6+ZZiaqglFl6y2I+7lRHqMIZDNxTBciNVAKDFOn4ntYKhnqFM4RUTcLp Fvpc/LMFa0PG4Go1h1/+9TXC3alZi+x9yu0t1U5mzbW9DuwIDVIp+uXNr0pL4plD QJ2qQF7uiMWduEP7+hbLv1VDWfVfS6uZxAheDuP1DJ5I1XucZHVWkO3bGmHMCJcJ gRGZvZ+tTlIFweyNMoMSxNMIfgKzGzlGhXv5CFp9Vnl7dNH4k6q9lmSPS5p5BH0= =+Qc+ -----END PGP SIGNATURE-----