-----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-etherpad-14.0-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-etherpad-14.0-jessie-amd64.iso 8b0a7198301aa4dfae1b0dce070e8ebd $ sha1sum turnkey-etherpad-14.0-jessie-amd64.iso 4034bc2f6faf7f2224bd22ed03464eceb6266c3a -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV7BroAAoJEIXCXpWhbrlNbxgH/ijv+6syFQr1rWHgWnvhCj9/ 8DEWPv0jPtaCkuiix/Xij8Nx4RPXYW7d1qA1samufJhZbcStZ0ptcJYcS+xTUwvP NyEhrhuecAKSuneJL2/PYJjn/0BiV3Z1b1v8PVYzl0t3v4ddgd+Ff1l7dnvRY17B PFURuoOgDg7lDFe03OkhrN+8zHKMArZ6Fblp4rSQAGR9/gRPXDdEvwCoSOK8gO/Q l75HgIfMrUoDPVx0yrCFnECPL0PsCJeU/rBY7qiijkPXOh932cocD9L2sKRjP5OZ kAQeeuj49XVqE+krXVWljkNJaAKGi7umQC2APdWgSR1yYBvPvHWmKnjjmO2yMEg= =ZeYo -----END PGP SIGNATURE-----