-----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-otrs-14.1-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-otrs-14.1-jessie-amd64.iso e2043cdc155cab190fdf7814198fb900 $ sha1sum turnkey-otrs-14.1-jessie-amd64.iso a7b4ec3d982408f16703e0a540a1e69c77ea0e2c -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPzAAoJEIXCXpWhbrlNlkkH/1bAXGbeuudnk6A+SQY13T1t Qv1eKZGTevilmY8o+ZlJKfkxYSo0HmsjnKYU5lnDO5cln0+L822uMMobK6Ct+sCG 2cpemAimBxhaMgS8BHt8v4DkD28MtQgYThr2WZq/VAqr1r/VbW66WMoYOTf0PKax lb+UAFssdTQROvzs1pYDlr5AX+z1TwLALWXorvCgJnHa9sVBU0E28O7DdnC/l027 5smtRha1dI6lx8bCZKH4ErpoS7UvyKttmuglHNNcevnNw7GvM7FFSxUU9IVKGKhs COKxPwTc83PfzCLBRIYDw301TH8VWvzrE/KvuI1AgLiODVGyF9v9LgpEBh2wR5w= =dYOD -----END PGP SIGNATURE-----