-----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-lamp-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-lamp-14.0-jessie-amd64.iso 2d0ff8e013757ca4014349275af4aa00 $ sha1sum turnkey-lamp-14.0-jessie-amd64.iso 5fbb8dc5a5bacd7aefdfd58c506016d78430acc0 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV7BrpAAoJEIXCXpWhbrlN9HEIAJy3k9WOXVUN5eazp6gq1Roj Qh9q3Z0rhRQ8BpfWtprXbXeEPoB7nZONii1UyqIvWAO+by5zWiTDSWsUlaG+IrtK Ldhrh+2etrIwH3s3yJiuFhfFhpTrx4PcHtscsX28zAq7fhJpjm8L+q9SSgKew6x3 EnBEg0W5/2u1Dbd3D7Nxe0bGfFccbnbItx3HnVtkmV+gF4aAWFmCtiN1iwzYIen9 nEIEp9BEa3u/mAclW1ORn2KczuwOheqCj3FcDxbc2LQGG2UwKCOntAL6oBGxpCVp 1t53RUD0BbKW0dIJ8WS0lTOB2/rbjRrxvwtW+ip1YTRkBw/+w7WW7mZZWaAGPMA= =zE1N -----END PGP SIGNATURE-----