-----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-gitlab-14.1-jessie-i386.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-gitlab-14.1-jessie-i386.iso 10f97a3566934236ab79df66820dd2e7 $ sha1sum turnkey-gitlab-14.1-jessie-i386.iso 4aa98ff2042a1605f511a3f0e6dd7b6fce96f265 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPxAAoJEIXCXpWhbrlNv/wH/ii1KU62qR0nOzbMUSUnDgH+ s1nhe963z6BPJXGFJv5JDerlJ+3em1HXyQWujcper24BQg5FvWV3CpPdnG6Qf8le 5uxwe+Glp8VFDkhlvhRcf0pYCc++sMfC0mUmRuxiBi6HRPiHDYWdYbQ9qFOHwEpW +jbb95O0KIAflJsxNbD9xJbTA7SDFEVN4HS+JLapBnBI9kOmPoFzIx3BTSV/0Pjf Q+d7BlkOZ/pW/i7W2hjc6cPwwm9WK0jYw9dFMknAXK695csZ1ppeVXperKf6+/ox FimJcEr6rASvQFXC0ruruxFVS96Z+Fo2NA41CqX/0+yM600x2EKdf2YKwIg6yus= =7IKV -----END PGP SIGNATURE-----