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-asp-net-apache_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 14:58:41 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 99734e918bb8bfab01e5fd5f62b44ecd8b83f6a9 * md5sum d062e3e42160c961c2188544e0e04ad9 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) iQEcBAABAgAGBQJSXVgbAAoJEIXCXpWhbrlNgaIH/1QQrqRN0qTo94ztS3PYAdQr hP1cis5f3D5+rrpbqUScDOHENablFLQHpTsjh3ziSWS6eFoF5DI/ohMPdL3/UrRI EX10JdRsbTDmsFIJ87IAy7Qb7WRktM/e84CW9UYTgcthphjO4CeE1jDM6MlcBIzd rRTFBTJBs5HBE9J3begT/ZYJVZ/uksb9KhD6qTXBHXu1U310X6IFfBnncf258COz jb5BjoMTllJe/aRhLZN7Xq/Q010vzG43wY9FAJ1uvhSVl4tNsv00frKVH7lYXl99 K/9GGtkyZytuc/myPlfgemh/FcG4rX2CnCDXvKHaz2TS42VpS+LVtdSjs2KvkQg= =iqGR -----END PGP SIGNATURE-----