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-bambooinvoice-12.1-squeeze-amd64-ovf.zip.sig gpg: Signature made Tue Jun 4 12:23:30 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 7b810576c65d6923c5814890d561de5c16a9a036 * md5sum 2ab5009d6ef4224f4220a6503ce6c3c3 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) iQEcBAABAgAGBQJRrdw5AAoJEIXCXpWhbrlNIJcIAMdrfjKxLFurc3Drm/gr3cZr q6Ev2zvf//kTXb4v7FI+Kw4OGCbxwJCVvMnqYsazweYKUT3oMV5AGqGIkPKPX1yN nRmsQQGJVhrmNJPTBLdAejvo0IMURv28A3Jk5pUxxDl+pRQcOQfYu7OF+vgQpRL/ 8HwdgUkFv+8nD0G+h++7QChJzYgnIQKlSUcjXdDsz6/pOpN/Vcx3Y3MsiUMZ2T5Z t6DcKJCNwh7s+KkA1Ct0le+L6qcX0/buX3myX07Ckd2teyGcjEpEDKrjusGcGRJA 2jbBXVur+XfFVlBnUt0a/EdLUQg9IQVuIXyyKv92cQD+Zhi3z12rY4i7kQFMzrc= =Pd9s -----END PGP SIGNATURE-----