-----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-mysql-14.1-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-mysql-14.1-jessie-amd64.iso ae060def01eb2176e309a890d905c674 $ sha1sum turnkey-mysql-14.1-jessie-amd64.iso 1fbc20c1bb0469cf919ddff2337d8543394b94a4 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPyAAoJEIXCXpWhbrlNRYQH/iXH9XKtMD47ZJtI38fz2m+b Vlu35pzmhY0tBb5+jBfkhuL+GpYpwxT3f9D3IfW1h5mgnvFWGjHpOx+qaALC5CBK Y1xtgAbwn6KLmtKjzK9wFRlRtFFeHS/INNogIbSF+tlj4GhcQfsJq9oErmQ+2Tuy /WF0OF1yEpeQELwcbRsFFxJ012E5LgbFEnQX898WmRyXY4p+vRgsTelKJ7dOE1Ak SlVDI44TvxeQhQVNPB/gcuLDM/sPT5ZFa74s+zwrZzt0oMtrUu4o6rYmYC9EnWEC 5Q2cW8EzYF/IsfOZvaC32OnDZgrJktqZ4xhY0GhG6qNkTEfdyQVU2rkDKAi1LmM= =TdE3 -----END PGP SIGNATURE-----