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-twiki-13.0-wheezy-i386.iso.sig gpg: Signature made Mon Oct 14 19:30:02 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum c2654418c0880f70a0cbd4f9a8aab07c75803d5d * md5sum 72a5e6bbc9da099f8c5f5b5a06b81304 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) iQEcBAABAgAGBQJSXEYyAAoJEIXCXpWhbrlNye4H/3KFW3VKZ1RNQY1puuoK/YpG F+Yb096rN1gP8IEwbEs5Wkzc6v+MmT3K4j2Pj6/iSys+nL/KmSZlQUpXVZk4zTNf sQ8vLZBXXmqiaWRcteRNZbhZwCzkvzJD49XcdlIziWZWZuhAOJqru3fbntV1X5w2 dH5his2Nsl4O7ZDrsWoKliPmrKRFQkXZ8BVolDsRjI5VIEqIF97I0V4NXFcBUT3I jmuQVPLih3owh6ToLXo97wY5JOS1qSK2PKM5gzSF/07CedN7DRz553g9mI++0cWw Ezyyz4tMh2rnZKaB8yIJG9ZoMYZhGVTuy9OO799CUn/t1ZWZgsyucf36mx1/+gE= =PaTy -----END PGP SIGNATURE-----