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-revision-control-12.1-squeeze-amd64-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 15:57:42 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum ea819177341f8a7b81bd307ae5f841f11b907754 * md5sum 82832868c689073faa25db301541fea0 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) iQEcBAABAgAGBQJRrg5wAAoJEIXCXpWhbrlNE3gH/i3fnH/C0y9T4MjsC37icjVk /yQmhZ45vCxqEQ1x0G5tHm2lPggAZygV40bL9lw8Vl7ktG7T72gCsKoOc+MmguMi 0FTGw70WOYv7BVvQ3Eagv8Z63C1BmgWgbgoDsDlzqOfygZ+SDTXMy9JQ1ah68/tj awEtCjErX74BNM90cxaBVNVOmEWweOgzHnx4oXAdv/XGy7b7RXpOGJKFs5x3BxAH 91IUeZnTjZeNRzV4xpQglCv0GLa0L+RjrVjhOsejeH+nn3amA8O35ivfoKNOWyPP T3eNR7fhF0KcMyNl7uHfUctjiD6tVTnJnlP9/G9sph+176afMHI850xVPVZTlNc= =2OKy -----END PGP SIGNATURE-----