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-e107-12.1-squeeze-i386-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 20:59:18 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 6ad2ddb572af372cf317757784b0fa60f00fe3b0 * md5sum 8ae87f97c2579ad632dc0045d9a19fc5 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) iQEcBAABAgAGBQJRrlUbAAoJEIXCXpWhbrlNV40H/3Liot3CGAG1sSkmJP6fbnWs WwRRqzI4fbhjHODA9ehI5YyFNS3JjdE0V3DaPCVA+nlP4YZ9Mi5nTs4cDDF40X1u OOjhep2tNCxcOtKvVOUph3jtUFQt0sOz+xIhQ+jI90s37v8M9k3v5ryHlh5/cTPT YFsDQSG5IJ6/EPm00GtHsk4ZqfZLgmo2k5qt/GhPl2UFSFXd/6Y9QK1QrDZ1mRBL Bwdf0mKwn95NUB8Ca+/0VVI0u7mV3why9HAZRwRFDU+I6ueiiJcdfrPxBM4IYTxJ mdBKqduFa0UrmLoDfaBZ2FnsuzP3Cquk4zlKjKklVgiHMyLMl1ZnHJy7LLx6vOE= =Rr61 -----END PGP SIGNATURE-----