-----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-bugzilla-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-bugzilla-14.0-jessie-amd64.iso efcb3af769304f00996d923eb3730f25 $ sha1sum turnkey-bugzilla-14.0-jessie-amd64.iso 82388bff6078f68f0a81cd0660b992fb952a74f9 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV7BroAAoJEIXCXpWhbrlNEWAIALTSv8/Fvwmh1ifd45R+S+yH uT9eetLm8/0TdE3iHfKWThH/sWXR0vCW3GjFIdy2YOvY+Pa1bsvjrA/ANSH+g5D5 0TvT5nXW16qv2SDYy64xmtBK/oeqE6Ldw9zucCRNL8ka7O6ApVX4FQN9bl1qT3eV OBckFba/eudxKG7SuUIbgtEF7NCTKmicuaLNVZqDaTY7/moh50YoHkLC8Q4vBn9e CZNjMwEf/uz7zKT485k1ybR3JOjepsrHaq3ZBj5/Z/9xU0yq1IWTc/gb+hiWfOc+ ZfYT84+feUnIsHSzhGfJ+X4GCgE8ZhxpN2/cUNtGPGCe/JPce30R5iwW7so3RFg= =UCdQ -----END PGP SIGNATURE-----