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-sahana-eden-12.1-squeeze-amd64.iso.sig gpg: Signature made Wed May 1 13:43:31 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 6dc0c41fe30c5528e5441985f128c1c0e6c71697 * md5sum 64f60a3468cb851c532a5f8d7c6f50fd 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) iQEcBAABAgAGBQJRgRv2AAoJEIXCXpWhbrlNuLAH/igjiS8AS54EyCIy2jHftCzz +pJod3sLOaJgRHZM/ye9mRwYcejgvunthf3ioZhP1mgDRyqTTgasBmueTCx/KB3m K/VoTymxQHLGocwjNtngMY2e0+u8sQn0Qbcr3O8ygHXhymztpL+bAZRv5Oe+wIY2 l/5D8JOw1J7dKuCL3ytsfDxkfnpj51R33v80yoExxRxndK9B2iO9iXtP3KZ3bh49 nt7DcE+naLw5gGR5CZdotnjWtPfHdwa/ZYdfW7O2awDjUI2OvD7mt4dFgCRnz7Hd e60JYT+ApW5rdFLOSxSNzIwpLWBWtoOUOLg/B8gzFi4C+lFMKp+K/col3+UZ/E8= =7Kcm -----END PGP SIGNATURE-----