-----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-domain-controller_14.0-1_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 debian-8-turnkey-domain-controller_14.0-1_amd64.ova 19830e4e167d42dd10e2225d45528437 $ sha1sum debian-8-turnkey-domain-controller_14.0-1_amd64.ova 6e8360acb40c0a7b3ef8f1276ce5e896cca8f4f6 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWObxSAAoJEIXCXpWhbrlN+fcH/ib3WKIFRf54ThbbtYsvjH8c Piz8fUVQ18mQiJhtFOV6rlE1KLqzTia8jDXckNtpVNTTszzlXbULU4LBjyvg/4kp XBe1XsUYmK4d1hESk4NAEpgH7FllkPUJsPm8lY6x4eAcysLIkWGNZjnsJtgrJGwa OyO2qqqkyW99YHSAHsC3keTns+0oEYXxKHFoYvj/Ni2COlOja62oxw4svtdbO8Cu GtoXiVNxAv7+N+Aw5v8bb8EMh/eyowEz1zA2Gl6htXbdCU82+Hj1hBg22dKEYHfB wE4p9R98Ar5fdAOoHDbikas2ltjnnujc4Ca9V+Jfm46saCXFUrPS5I6dVXfUbbo= =8VRt -----END PGP SIGNATURE-----