-----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-jenkins_14.0-1_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-jenkins_14.0-1_amd64.tar.gz 8bb987175d1b2aba6813d019b584cacf $ sha1sum debian-8-turnkey-jenkins_14.0-1_amd64.tar.gz 4c7d8a203d9d6a962894028b4d847c1c725eba93 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWVyWqAAoJEIXCXpWhbrlNm6EIAKopX0P1QNmOf120YBGEujPo 6p0nvMxb+dpbYjXw31OW/FnYY1HNDG2UgLWc3Bcq9zkfJ7BZMXJ8f7vwBOqLypk3 yjQML18L1KRdAnE86v6PJqcpFF8dJpPxZxTsXpcLoH2feitsPbOI0cgx6uxJuaBu +EvNzHVPmnQNo1C6ojA2P3F9ofqAtpbUpf/Vuo83hOOzdhBwiF7sVQin1Jg7E3jD hw4+1jTmIw2Rcpc7zI6dbSy2la/9XBKMv6eAKuEri+ttL9ybhJuuSgZ2pz9rLd0T 2bgJzBNWnzUdZomxwpzJ7v15a4ZK8V49tAk0YeDQtUgzKYolGL4WrYA/rmwk1uE= =kkr0 -----END PGP SIGNATURE-----