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-limesurvey_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 16:36:29 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum ffaa6c2a0ca278e5b4681cfe5b58fe5f041c1511 * md5sum f4fe41db31637b97e37dc7b4ae7de41b 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) iQEcBAABAgAGBQJSXW8FAAoJEIXCXpWhbrlNeM4IALVC61x0Ogq1b6OebGbGcsD/ D/nKSHzC0KgPzjaI2eez8dO0PUgWMC/rB+HUJSNuuwJHQABCvQl6oUGhpEr5LLrS LKZPAz+avNAizwxnGsvCiGuqkrqrk1JSXjl4cNMdMWbXG1T++03ZBi8F5i9mwT/x GVyuilRL0uCsBKjgqsrcDgd5tCSjw5fgQZSWA2Ana/pWgRNHsgVTEbCSW0JixqgW hpGAqZfIbZ+sNoQkLM+1XiUq1gouhRTfz/zfZgALc6ey7C/hv08GS8cf9+3+hofY I92TqMT3MI2+VLh3dO/yVoj+skYqsOHcjRqrpsLuXEgNyFRFDCvwXTV40BOiO/0= =TZFo -----END PGP SIGNATURE-----