-----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 debian-8-turnkey-codeigniter_14.1-1_amd64.tar.gz.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 debian-8-turnkey-codeigniter_14.1-1_amd64.tar.gz a9c1060cef0f455ed7b305eeb3c069ba $ sha1sum debian-8-turnkey-codeigniter_14.1-1_amd64.tar.gz 612e9e0bcff2fa462b1ab0a22cc62dd286acd82b -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnpAAoJEIXCXpWhbrlNsUEH/39IDaV+x6A7zbjT2xVmirJo /NmuBpLXYqvZbdlbUcYAd7mGZd88XiqnQA0ntX4LAPbAOKZLRGw6MDPBodGwqYVz kp7qRE375gSQzgsS6L9Ta+Nv4IQVzbIYCrhneNFwF6ymLiF5Fnc8HTFdREnHBO65 ts4BAjTYKOSJlD8fbs4kb3U/HBV5Vv5vt3adMCk+94FBtB2z3ctfMWTAQ30F559a bAkne640Wz6uiXDmKd9aRPrmA0hJHqZMxU9qu2roGubOIRG3OAv7mzP8EysOU4N+ WP1o7pNUAP2F1EzB4uRmM08YXVtjI+DKgddvN0Z7ZzCIZu2dHP6orNgFNj55Xh0= =LbIN -----END PGP SIGNATURE-----