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-lapp_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 16:24:39 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 83652c87380cc645b29d1f501299d17affb9da69 * md5sum 666832d913d1e8b7e8517f8fda3aa5bf 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) iQEcBAABAgAGBQJSXWxBAAoJEIXCXpWhbrlNAzgIALrvSmbzmRdzyCEt2lgfQWx4 A/TM1vUmyFX8cWJFhTZoflMwvHmQv6JbNaiI4E2u5byxK+ecE5hrmAPsWhO+341M IgmHqI04j4vnQdJk3jNcckYbd0ZV0yuSskFfxAUehTvqRWFCzwFEJIahtSj/Si+Y NyKDyRCuFuUDjJGrzcgiCZeB6I+1w3syAGU76QwvPSja4W7SfbrfCrh/ktl/Zr4n IY5bbxkMCfFQ6EF+F8+i58rFSJkiG/FI3Svm19BwVhN/3YFeiJN0zkTqUUAr7T5q 662gjVjpl/ise4apd6FQnqUDI3P8JGEOtVUCt/nNtkp93oeF4HRZakOlwkDhxwE= =f3+g -----END PGP SIGNATURE-----