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-jenkins-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 08:48:00 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 77939fa8ce31b7299dc955fad9a2f0c44bbda6b5 * md5sum b383b01a746f4b8d8a2d63c266a9584b 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) iQEcBAABAgAGBQJSXlKuAAoJEIXCXpWhbrlNh3kIANXktYDKamzaO1hg0P/Njb+L Qt2Ji1TIsgEBmjPA/905P8z62G3kC0We3EQMESgY2QFetV01hiuc9gQkXdXzDRmF eaSN86rdnUjhCdzw3WSX09uhVjRAmwGbUgw2FGa10vFfwINr5nQ8AgV8r4q1nacc bLw750cJWn5Y5SqO3ozDQJqVomry9wNH/9gH5aVimv5uJcP2kchCMrRdhjhEL02+ giTOabdlZwfF4kMcWV6tBlJfgigaHDEj/oC0RMHW2mR1TJogihWoRcFGwhPFtAOH kCq9XXUcGSb1HmmC+swXj/ipBVJrnWQyA652yCKZawbjOgSONZITeQEs0ZcyD1Y= =RJOk -----END PGP SIGNATURE-----