-----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-couchdb-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-couchdb-14.1-jessie-amd64.iso 0e97721727cfc4844dc61c7c9a7a9853 $ sha1sum turnkey-couchdb-14.1-jessie-amd64.iso 23ac2fd883e49318184d1e8072e382600794aad7 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPxAAoJEIXCXpWhbrlNPlUH/2iqDIEFDvDjxxevb2sviyoM vQPHpFuRUUnIKE42QwYUvqWOcmk7gUNiUs+BTI1VvxC1WKzGAe/rG5FJKv3JGtSC /xqPrIRlsBwQDshCD4o2tIZ4MVFVSlmTluUtG5DvQ7uDrxLAgq3LqAACnumnQ+9x DKXpv1l+HQC7x+nzHtuTIIZVQWVgk11NlswLiMAUIkRCVHDbWNtjWFdadCDiU+xS 0sHULJ1CB7oxVocvuUT20QgRdmXcE2WZ7PyvWnqG34t1p4OlOG5/ITF55wBo4EPz 4SpnykNdZmMoLfMPh6NJiAFyZ2YzdxW3o5HZzb+1OscDouEyL3jbxBYavJLAiog= =/Ulv -----END PGP SIGNATURE-----