-----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-moodle_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-moodle_14.0-1_amd64.tar.gz 80e81e6ddfe70d8b535105d081821682 $ sha1sum debian-8-turnkey-moodle_14.0-1_amd64.tar.gz 489fc1d061a19f8de4173931a9e8611b1544bd54 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWObxUAAoJEIXCXpWhbrlNGloH/064edxur1E78lf+podiy9l4 9O+eKKfUSR2njQhBxCBrAMSRuZfsYcPfHpOeCbUBzsd3os75jhQ1N62CJNXEXxmN tFsfMplKSPGu18sScFyBumvX85wFR0x4HY6qgY1Ike36jgSuFXNBa1PnC7ibrs3j LItTqkMMTxyArk60BH1pPOHI6rVD8K865y8MIFrPddEW6dXhCHDaPzJo2jc/ykqU qWzCuwGxIjURcnfwow8V/TSt/rPZYVloOhCYnJ7bdsxgsE+KSMfJdbACuOdOBJbU K33w6jYCl8xfuyzcEWoH6CMKvlsH0W9xhAGOSSFr4PnU8Mv9O2D9tERTDIkIrik= =NuTc -----END PGP SIGNATURE-----