-----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-typo3_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-typo3_14.0-1_amd64.tar.gz 0082c081a016304ad395594f31317ab9 $ sha1sum debian-8-turnkey-typo3_14.0-1_amd64.tar.gz 5699860d131c545f63382e4b70034af757d1895b -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWObxXAAoJEIXCXpWhbrlNUsMIALhUqKkghdx5Bz0GuofR73vJ 7ptOsmlzdXRbKi8RxwjieWVAOw2mKzwO5EIPOVksydgbxWaL6ut5ueFMtX0wzsyM MdroCxG/jfTL3lren0mCEExpe7hyE7BWlRA06+ipFJs3RKKo0LU/41axbRQitBBW zu72SJ60xhB6h2KH5X2YGE4VhQrz0RpWXaggYtC/x43Eij7XyYxYpNFFWmXs1qEJ IHQ0stMvrbD+ouKj8surUrj3MHYvVCxAla8HmNhDc2Ncj5qHq+4+qwYyn8qoGkwB eRHbth88oyXWig0WhpB7QbH2O3n6Dsup5ikpPs3k4gi530FMc+hPK1VsAsOAtzo= =+j+s -----END PGP SIGNATURE-----