-----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-otrs_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-otrs_14.1-1_amd64.tar.gz 5f99e68e4f124be7a1a57e2ea501d4cb $ sha1sum debian-8-turnkey-otrs_14.1-1_amd64.tar.gz a21d48b75074b49b7162c49a210c568b01efe256 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJntAAoJEIXCXpWhbrlN4REIAJZ+eHwEnSvTZPyDQ9yMym/F W3QoxlFPxNcVyFJVT9INTZuvzEogYKR3wBOZAnmoQvhvhbDB/W+uBiyOGd+vAXdE sO3CvWqM60+IdZn/ZQPz+g6fR+BetujR1E/at7tnRbpO7tDn7S++td58hMk9wa2F cDdedrv9bBeR7mEiKw3Njt+aNzkfrS0x5vxqPCbyWi7mdX9r7/28BxbvZFipBDzt +BYVB2YgyJUJxF0yOLnI4uIVmRPk4k4DlrIqbJu3EhQ7CBvgJflmwha4Hv0/AiOe pa892RnDZZsdWYA9UAb95F9yX5Yzh2n36z65Jx7Ec0Vu3R4Ub3yAMSniRPCa5Jc= =g3Ba -----END PGP SIGNATURE-----