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-icescrum-12.1-squeeze-amd64-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 13:59:10 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 8c6b8c64de14b5177502f50a8557e37a3cbd05a4 * md5sum 54c91c417fd9b12bf9bb5890dd1b8185 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) iQEcBAABAgAGBQJRrfKiAAoJEIXCXpWhbrlNpOkH/RpinkMoVZv68Uay+lGwKwBD VNrQQi3x/bbZmbNxFWD3HXYvMOnEWYWbrFJ57l63NJZIl1lj7mqUExFCm3SKUXJC HWI2Ta7cBco5FPsfJhGpWIbNE8NFRo91boZOAePeVebsFbk724W3riK8w/kAAk+h IHdNhyNN3PU7FdGiuiPJBAUuDsKN5to+HlYUPOXjdIIGeFyKmNThDD52sLsJe4bL YkURLyZS7Nfp9r7uhD0AHwQ0HV2zai2pPnDiuud4oPkbfABbnJPcZ/FpiNMA4NSn 4FzP4PVQGhbPyM8HGCu5dDnBgjhxj7RQCxsYcSahNE5CUGuJJ5TaJ0hOCQziH74= =gz9H -----END PGP SIGNATURE-----