-----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-mantis-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-mantis-14.1-jessie-amd64.iso 83a92953f7024197844d7732ac2845e3 $ sha1sum turnkey-mantis-14.1-jessie-amd64.iso 2ab5dd52cea1db2ca4288588bc7ffd27ffe923b9 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPyAAoJEIXCXpWhbrlN0HAIAIeGjRwIr2m3hwAuM0wvDtKa TDyHlqUhKgYTcog92wBNldcqUVx6RJiVn3c6R3GIoNfl33rl8s8eZpEP40B+3EE+ +mO9mbCtR3z6WndGCgsHNpL4Re5oB9KdpPDo5dgLtQ1ekwZtwHGX7bSy1xP8f/XD 0QOo7E/mtx//BmBX0cjjRpW+bgsuYE1nQi+wZccWhc+8uKysIyNHMQRVMQpR/GQr o6RShjtdfRFUpmrhcpL6Z6akWQ9Ew7O+0HN1KewGkfxqZtiLqNFA6HqOyLjgfMQD E2+qx7X64paajwJVfLCa4XstD4DP6i3LhZ3bds8MVlpqUwa3toURrAPHzIyJVdU= =bKik -----END PGP SIGNATURE-----