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-movabletype-12.1-squeeze-i386-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 22:41:47 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 69ff5f719a145295700610ad4915ba519079387a * md5sum 63815c239bccca29b971b74fc67aa0f1 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 v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrm0fAAoJEIXCXpWhbrlNwEsH/2neVFqENzxsCO/h/Iwi4qps dX6/lbF4heI0Pd35wOhtFTmwnoDcc65eOi9mfZYmd9bYmwOlbS/CRQzw1fM1ojGU eFZFpesthM3jNIJTe5s2rRqEAWDtQDLyjTOVa4nRZ4lB7VIuff+yXSwdIuIw7ecT Sv+F6cDXsMdoQw8uu6W+5FuayPoCLyqoVLRVQHgVx36ymkiYEUE9GwK+BAVyPHWb lGB0KrMPtPxeQibjQVpQR4oMIzfWhfZ5hwlZCoou0SLpG5VGyK1h+8S2/ljKySCc c384rDU5hv45rrUT/p4UidajxQ+zmhvrRUxSWzl9jkRGFq85D4FNEcei4HbNJVc= =5f0/ -----END PGP SIGNATURE-----