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-statusnet-12.1-squeeze-i386-ovf.zip.sig gpg: Signature made Wed Jun 5 00:19:36 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum cab65791e0de424095aeca4a1d3d9a8719c36d08 * md5sum c671ced65373991bed2fd3fccd3a6c69 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) iQEcBAABAgAGBQJRroQKAAoJEIXCXpWhbrlNS9EH/1rkF2/v/FZOm41sg2vhRS8A UGPdfJ0XAiV16keL0YCMbxxs8TnzQztejlS4TY/8iSiOltr/mkFIcTrA5GVJ55H1 dmvnmyPahI04j6/XK0Jyd8Pm8Psnt83uz1dc/wZAKVRLCxZtEwXQMVXwmoLebon4 Z9blZi5q0OqjzIlFsdKwlZ0GlHjGRFSnnSb39fQ3dwf94p93do7YuuncKXV3EAta iwwb8CPi60xvSXuF29xCgiz3z7VHy13og/fkGFNadQpE0eDaRcM2Ydjzq2jc5KA0 ROgWjsBYxTNo90sl/Ib3cbatpvPL+vKdBigsV0bKRy1imKExBTICrk2AswdHjwA= =pKHC -----END PGP SIGNATURE-----