-----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-vtiger_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-vtiger_14.0-1_amd64.tar.gz 628d7c0dbfa023a03fd384697431e099 $ sha1sum debian-8-turnkey-vtiger_14.0-1_amd64.tar.gz ae630c78923fca863bd5d223cdff9c34b75d2b88 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWObxXAAoJEIXCXpWhbrlNjd8H/RxU6wNCFnldcI4TllbVpd// M04QWJOccoJpsh80Jnb9TX6kwGiPQenE4goYzMzCC5D2iCSx2WfquSFDcdYAWxCi pfmN9YuDBnmq91b4e6JnA6XP34gmJJJxoFtYBcTRvBmE9hOXaU/dgrSdS9ki1gcg D3fFYP3IbK/LWFnoKfBl/wHo5LGidW5J9QWfVcyQZVhav8AZ9ylDqft85We9JOI0 0mgWvAeBOgjkLhOtm8uJsvo0CBkka5EqHno4EhaRSez6PtWcmrSX1uUl84AkkWqF jnTKmgpGr9nQJRMZc8xExopa8lI9QhFRPqJ+UqTY4UqYuwaB9JdxmKXlMmEvybg= =cbw5 -----END PGP SIGNATURE-----