-----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-joomla3-14.0-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-joomla3-14.0-jessie-amd64.iso 6d34cdb22f17e11efc16d3f5649440c1 $ sha1sum turnkey-joomla3-14.0-jessie-amd64.iso b3851004907fab0848525803b5e24104a0ae9440 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV7BrpAAoJEIXCXpWhbrlN5gYIAJ0/Gjmv722OTCw/QQetkN+Y DecNwr+YGV40Adx0A1rMZ5PjQ4rMcWOzCYVA/Ncbqc2X3cBrk1dON1FS9DGyFrzi dJgIuSBi/5wSgGiy2smjp4kT5ITise//Fu/UA5dgVNamu25o8xxX0q/ZW0xZ9/9G aIlDvJgqOaUf1JLQ8xxGTbgpJtq6KiMmPAA4yFz0z0hTBMjSgB7/yUyCnd629tgz RxuY4RYZqyzJcifMvdlHVAW7ViEAw6ST5I4PxCOd7CHqd3GPTb7s3Z8n3KnaPhU/ g60hN5l83YtZ4Zt2fJak46/7vQhI6NIHDJqXWiWdRJtJfQaUoQQ9SU04iUiW6QM= =RPjG -----END PGP SIGNATURE-----