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-mediawiki_13.0-1_amd64.ova.sig gpg: Signature made Wed Oct 16 09:32:59 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 53c9a5e43a1aaf73dbc843a219d9920e3149860c * md5sum f70ef49c36d720603e4b11a50a0e5965 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) iQEcBAABAgAGBQJSXl1DAAoJEIXCXpWhbrlNZhQIAMTV4YH6zaHTUr9ltqtDYOp3 gAIKmnYJFYnjbQtTd+PT9TopkqK88Kv+R/oqSesmW1AlNavlsEubrgLb0Y2h1Gvt qf8zWezD7DA5XUXJcxjspeSF23EzgQxYaXkytNfH5quvWAsqevavREdWQC6VcEhU vxuZDjfprgvir5cA2UVVn5m8KWl8m1Yhmj6xVPX7S/qEeQIkTyVWruwbpoSFVhzz BF7IcfPEQN97fNqcpYw1jGUxG8FW/icJar+8EbkDi/NUCZxl/OS/ZRiTq4K6l21U CxpT4wqa1bqgWsfx4GxZT5scoxbjTxpVsOYmSTye9U5Mq0Yl2eXAB51BGATnBnQ= =DJKE -----END PGP SIGNATURE-----