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-vmdk.zip.sig gpg: Signature made Wed Oct 16 08:47:42 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum d474a33e3a7e12b32681303046f767a02337a545 * md5sum bcc56a50ba4b6ae69110bd70a76712e8 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) iQEcBAABAgAGBQJSXlKdAAoJEIXCXpWhbrlNv7cIAIdi+Mkink6sAhFKGXhBxHTs jBDyLJ/gjdr2k6eZ4KGGopdhU9DtQUcktTy3QBVDm580HX+Ql94hQh477RGvkJLq pz46ou+Xg2Ea2a9VYB5h8g1P7RnX5SkURM0qK9VmIvAvbrvXDmkVgzAqQ+/WwTVj 1hHtTagxDz6KVUB5SbOm9Dq+Zs4rxon9F8jS0OBpZzdPCMAMBCNw9/X2jN9w5wQz N/3FTbb7ZBWvA6WiKXGFCh9WQZNQGVg0aNpro30hKWtk/ZfzqdCFti40iQXrANHH tLvoGPqguPBoRGswK7YtNs5m78hprXmB8jliURIasrxumiMdiQ83VwsH1vxCN9E= =QToO -----END PGP SIGNATURE-----