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-core-14.0rc1-jessie-amd64.iso.sig gpg: Signature made Wed May 6 11:11:57 IDT 2015 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 82dcce29e87e8caabd172bfd9afecf7dd32ffc13 * md5sum 628a7456cb20c12fb7a82f7a51cc7a3a 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJVSczIAAoJEIXCXpWhbrlNMOQIAKaGbV1UIdz7Neq76F4Vp3IZ 4VDwV17pea1E5p/4UbjCkH1zQmAazRGr+kG0Ip7A+1SNwu7E4zk1OrzxMrETxzUe 3HsJhGUgrPqDrnq67ydj1d1m7jj0HzpDQodBv1mntyWwD7KBu0G+vD0rcBmHIWmu kEj7R+kOboZsiaun6C4QeQgXE2HVug8NFrUdagbJUfGpZFCWlHEmzNcMsoa61reP +HussvcsnWjfn8D0BjexwUkv0RaLx5+F7ooQDk271y6t4eNGQXezZvloFDc5owS1 Mt16orVOPAUKDrJEMrgBxDk1EN2P8/0BppeAeTmWQayew693uUhOKO+uwOS1AYI= =eAXP -----END PGP SIGNATURE-----