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-core-13.0-wheezy-amd64-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 08:49:56 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum fdf3c1cd56526a52f8e4a84373db82381b94e24e * md5sum 01e7b0c12ac51dca2050d67a91c98480 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) iQEcBAABAgAGBQJSc2swAAoJEIXCXpWhbrlNoZkH/2C2JMf8hIc5mUaPMIPnwfmx Ylgb6vpUOOO/ML0AZ3to0BUAun1PNGKEbaIEPuejR4SYYuPJAVFgy/THfyL33k8U TzhH0Ug81l9d+e+t4ACXm+2U1CKSF0a/DX3y/yFCe4mr/NK8D4I0wHE3Wiyi6Wuj dPfFVaI8MMDBUHkVVXBbSS9YdcTUhpCKhqifpi2s36i+Ws3DstysGzdARCiERAbu rNwrtRj2qcy/iaNl4HSQ6yT4vRuHgWuff8zCR3hP34qJxX43jaowexwSRL0BU/Hl a8qa8a28dAizX9T4JgBy34gozQdkaTxAXTaJw/5/Ex0/qu0m/11Y04HjnsA4Y1Q= =ZQ+S -----END PGP SIGNATURE-----