-----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-core-14.0rc2-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-core-14.0rc2-jessie-amd64.iso 64e56604a3589d7c88f62aff3b739acd $ sha1sum turnkey-core-14.0rc2-jessie-amd64.iso 3102c66f9febcdbe2a697160a06119c558a95769 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV1YQBAAoJEIXCXpWhbrlNBFwH/1opYZGM4BnX8fcgFT3Kr9Ku KwwTg5hUeR38qQmn/ntQWAvas9xsBYAT8vVsvk965i4KT1MtjBHARm5I1Ns91FDc TC6HZCgZa8YNsrjall3LTg+P8kK55Au1F73hj3Q4ubctQBTaIQIb7J5HzQ3pVFy3 CcUen+WqbK+HdAkn6U6DqPriSWAoBXSMEUKpUmfoKCyeQHJZyENTpemj1hENN5a3 Du7sBx/Aw0Zz2fL/KafsXXJlGfRoZGBp54PpFt81JWizC4yYY3vapco8J+SkeHON HGxLJAVTj6biV+bBCYTasx1sqnzpXHVcG4W7rU5p/7CnQNU3aq7Tri705ZD4TVQ= =Zb0t -----END PGP SIGNATURE-----