-----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-symfony-14.1-jessie-amd64-xen.tar.bz2.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-symfony-14.1-jessie-amd64-xen.tar.bz2 751507a8ad375a47048b02ece1549cc1 $ sha1sum turnkey-symfony-14.1-jessie-amd64-xen.tar.bz2 93d3ca45bfc953501e9bf1581ccebdd22975321a -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn6AAoJEIXCXpWhbrlNvx0H/i0XsDZ+2OI6VH3BE1ZTsZB5 87BirJt04sOnFAdp/0WdYjbzytZ7zQAflJ4fTxUmb8yUmodnh0VgoC56vrYbxr5J 5XnLShlchDcOGiVU5VCtYLvnvLaBPxS3t2ssyrSlDQTsw6k5FhcG7hYkXZo4fxPg edk2SlH9qmpAYOaQ6Lhssm0l/5G/F6gvORhxyokwEkMMWuh09ZbhO3F45kpi+vFc xobA1V3JmvXIoeB6qGnXwJqqPDOQc0LEFNIk/7Rgv+2HpABSzzWJMLBTIljGF9Cu 38u7CZ71BplzEm+zvWdLQhh4VRnkfq6hZnS/SURyIabU6VB6Y8gmAeUxtlNM8PY= =iP7r -----END PGP SIGNATURE-----