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-6-turnkey-zencart_12.0-1_i386.tar.gz.sig gpg: Signature made Tue Aug 21 14:56:23 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 9746a9cdd8a29a1a2e8795e968fb98a21c46ea3a * md5sum 090b5551e0be66f7b65c9bc97b23baf0 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) iQEcBAABAgAGBQJQM6GPAAoJEIXCXpWhbrlNC5wIAMe29gHpiQ8NGzzRcR8meieU /+9lUDJ14GK03Roa0LtYQ3S+53lT0MKGzH0PU7XsaqDeu1BQNVvWZ00rR9YIcab2 ienwLjfQcQSnWpfHJAcQrfYJkOx2ghr3TgrioxO5824gYtRdJQzkTn2yp3SYxk0+ 0HKEhkVBVfHkd/86lhVSz9IlPPfZsCKDfy8fyzbcTzbqQMAq9fwDr6oIQLpR0YyU CZxh/xhHuBy8GohFuHxYaFKXkOllhUAOBb6CWAQp/ENAJtudS3bgpZN9yPokCQj6 wTsi/ViJb8j2SGWzh4Nh3DmMT4SMQAk/Lj4gclaKd2LIUc7hIBupJwl4vhxky4c= =6dEg -----END PGP SIGNATURE-----