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-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:04:42 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum b7da572a1c94d6e909b69ff0ccb85da2453ac1b6 * md5sum 3a199f16bacbfdd2e704c6f6b2851be1 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) iQEcBAABAgAGBQJSc26eAAoJEIXCXpWhbrlNvqIIAOg4lRLP2fLuAOtWQSE0G0TM lHE7xdOZYkd40VtqUSOlTRtHfDpwZ4QbmrDcfSITfTk0TJZUSpGLODWYGKfUV14N z4klBu9jztJi6cRY0/xvWQreamEdj2EOWR2gn0zU7Tpldm3OeUSd1FiOrc6MVnjI hwfaWv0EjKgAPy+y1cjy8FpM/rMH6363FP793ynF9Ms3CuUzi7aDDIGofKTQYS2c HVRv+OdRycVQjGF7L+YOJPfGRqCFtydxUuzouzLUn/xTnwbXEkVzteJ1t7cVXarR FHvWXjK/Ohbt+h+4/GaB1DhHbVbuKujgSYfdEOr2rKr+zVUjMcj5bF6PopjUO1U= =nZWF -----END PGP SIGNATURE-----