-----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-yiiframework-14.0-jessie-amd64-openstack.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 turnkey-yiiframework-14.0-jessie-amd64-openstack.tar.gz 12dff09ab1b61599546929d2a91e5472 $ sha1sum turnkey-yiiframework-14.0-jessie-amd64-openstack.tar.gz a25ac44cd92de9bac59c87bfd44bd6390dec2db8 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWXYHAAAoJEIXCXpWhbrlNQmUH/2e8Mc4KC/x1VgZPowEuypml aSn4b6KZAE4zc6j3oTdAYoS/4wUBo2gY/CLml4ArrTejjviOFsFWqxVL29TfDfsi BpcByhCGjXlITP22P5n77kYSFjSILxqEMMs09+XK5LHvPDYktZSHBWqfVhoX9eAS NF1Tx4lMUWwYr251OF1t7HmdGqRnXRlgM2ApNeVOwm5ueOc2Ec53Xb3ZXu0RA6G4 +icfuRoK/YwIcakuOxbpY2NnOv2dIMTLIFP5qbha4GIITKYFkDnU2eyLeX7pOxmy EFX96y2ctV+wbYzp9HhNjMjJ+yjHpstO5s9AjEKlvHWWl4UhsMNVXXAXhjVjDpA= =Wlqw -----END PGP SIGNATURE-----