-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Two steps are required to cryptographically verify image integrity. 1. By verifying the integrity of this signature file, you can be sure that the checksums included in this file are valid. $ gpg --keyserver hkp://pool.sks-keyservers.net --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-gallery-14.1-jessie-amd64.iso.sig gpg: Good signature from "Turnkey Linux Release Key" 2. By calculating the image checksum and validating the hashed value is the same as listed below, you can be sure the image was not corrupted in transit or tampered with. $ md5sum turnkey-gallery-14.1-jessie-amd64.iso 66e7310a5989d484bbd7b1ba705703a1 $ sha1sum turnkey-gallery-14.1-jessie-amd64.iso 0924e064bf2ad138c969262996c8eb2d64c3d6c6 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPxAAoJEIXCXpWhbrlNjT0IAM8H8mL226afg6tlBnUYFs2+ GhSLe+HTchrtT0jdTL52vNjLeEtp5ddUqOThAS5hpyyx7G/orYfaOCwnkjkD2IG2 lnc+39oYOD5LOqMb0sDyt6sRsD3Oyj3S+yP5zqN2HHVC165l26zoHLHRl05+ZTGg 5Mg5lHx07Mme5fawJKkYn57roH71xVOxu+G4BaaBcaqwq/Zb1WWO074FvGWBuesT IqPBVb4349LPKA5brbxkjbE+migmXdgnzG2N8cCaH0n7QWcGy0KCICOKlnca/ZBZ z9I3pomHQ8BUITInAJL89WpgdG0jYNaknP91sTwtarPpYUhV6kvlCtb6tfFYUoU= =6psd -----END PGP SIGNATURE-----