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-asp-net-apache-12.1-squeeze-amd64-ovf.zip.sig gpg: Signature made Tue Jun 4 12:23:24 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 4a7d882aef64f8e9847d308531d0f76720ce6987 * md5sum 20cbc6dcd97507487c25ef6d09259c3a 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 v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrdwxAAoJEIXCXpWhbrlNRi8IAJNMMBN1zleikKY/QUMLAPhr CLc6PqCZcByeFTJWjNe2S3RCVtfkaFvTe5tw7PrWKn5lxvVpQzbwWJ1D3BENKbqQ H9xctltw4BRLrir6+E9iRywIfIi9XyaMfyPJoRcEWuXlhyihYHtd+KkGn9ntEu3d Ofxffxc9NZGTyQvshtYFfC4r8q1a/BS9+L/+IodeVFDeXCrC124H/cbOt9jxQKfU MwOCFgmRHeexZz82Qssn3xQG8QbrUa6mHXQ293ToBhwVvGIEfxUany5XNMlj1fAj oxoY3bbuBpw18tB4+r+kvVSgpTvFwchHbkV3VO5wdkSxH2rDj6yGdain93YNwJM= =NicW -----END PGP SIGNATURE-----