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-lamp-13.0-wheezy-amd64-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:04:07 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 8ad6541947af8d6273c0e02aa3a0b9f35a481472 * md5sum a1af2dd7f63d966586bc0c6d4014fd4b 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) iQEcBAABAgAGBQJSc26AAAoJEIXCXpWhbrlNrw8H/1qhlm2H/u5RifPHfKRF2UVq ww+3jTI2l0p3QeIHnI02wCsiiE3zFQG1LamaF6mpv6Ggg1tGAR6GOx01zaMa7pBK 02JECWLUPsBQJs50K/s0V8+Z2AYNjdltY281PxBE5H7XYhQZRP3sXeSfPsZEQO9b VVHpGAJ9zYbALNIjisVTbKu2pI/oEMyZq09VMD4CxUEprrJpKFa9HrDeIbBi15cV RdMJld2LgfX+8B2Hg+iBF268pHUAmELHZz6Q6285nwIyQjvMf5GpQ/eRxs8fovhf ZsisTElth1biKcUm+bTwL75WD6UiYGsJt7ekl2LtX8UdS+hgPEkYmWusBCBSUbg= =6dHL -----END PGP SIGNATURE-----