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-otrs-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 09:32:04 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum b956e74c403f0e056ee860c853cbd1571b5af09c * md5sum bb9b0c633f62ff12fec7ba8ea2960e1b 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) iQEcBAABAgAGBQJSXl0JAAoJEIXCXpWhbrlNxE8H/17WZGFDtv/18x7VLTQGvoS1 vZGB1yqehKbcykxR/eZ/fbESDj94OZh65hxLslSH5KIycifM9ilvKmL4ed9NX5yl S5Xhpf2hqVH2qiA8CNYUbpKunQHpZuRcZQcOVmZITe0WEdljbomoGY7RFd2rxq3w E+uKiip3yypRd2uhTSS5xQhwRgrGIsxVaa9666oudG9bkJA85bKUKZIu6/Y9JZAG 4zWMqQjTPK2zBFuBaR2xuEcsxrrA7MrGNkIArFik9KrdDi6F8267dV13oDx8Zy+Y oR1fCakEUtBPB9cnIZIZL6H+zOY2TNe3jMFM+DeJ3Sz13aYzxNO1sDgJsJT2ddI= =vbtU -----END PGP SIGNATURE-----