-----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-gnusocial-14.1-jessie-amd64.ova.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-gnusocial-14.1-jessie-amd64.ova 478f3044b5a51483f355f5ee88cf5f1f $ sha1sum turnkey-gnusocial-14.1-jessie-amd64.ova a903663d2039ecb9354efac40ddec0163ce60837 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnzAAoJEIXCXpWhbrlN51cH/AtCGY7JmngeK//lx2rWo6aS 6lyNXC9++scXFJzPY4dFmKBSf5MLVn9Sns0y0WgUaPK9REyfWwYMROGP58GefE/U Log5DRbVMCDBsTKSis5Us/nAVDBuKdGJ/zRPq6ZdvGF49SgCkltvWstLMojY0njQ jsM7mlxyseX0Ez7MItMUUq2jUCwNYAGQ990Novuu1gjSCGpoMxCslGs7HGio3ggW fEQQHaCotBZQPTAECt9puAPOXg1+X8t9/T/Z7wJeaY5m4DnBkPtPlzNtP9xUfQpb OLjJ0RKbWFqdSIA+WCfixk0iAqEq/omFlUMrQojrWE579lJj1baaP4V67l1TFDI= =O0uU -----END PGP SIGNATURE-----