-----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-cakephp_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-cakephp_14.0-1_amd64.ova 6c696933e59712e6e9835d18694a3c55 $ sha1sum debian-8-turnkey-cakephp_14.0-1_amd64.ova 03097ddeb6a96e82047731be750a96488a7aee1b -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWObxRAAoJEIXCXpWhbrlN3IIH/idc7EU8mIS2G81vNiOFlODg jGiNW5oQLf6WkqOdlDKLanYZFj3ck0Agh6CsIsVl9YCUMFNJUnY30C1zW6PRPlS9 zX50KV0qi9JNidHQFEVp9qQsUE8bKsF5drMdze+1Dj/oqn9giCm9e/gaNqmW+K5w 9xOXAXjnxr6Nr7EDQTDYdt/Vr572h5iiWCj9i9BsBbJvliMD0jFH6DUaF3Zl4tyB uBTR2zkHdy+mz85UAP2KkCkYpBl6F6jjQZkIEiaMv7wVYWn3eRf++X4oYQJKdScw M5R1byr+L+Qenq+GxBrgrgfQ4PIqX77mBLFGJ1AeFJc/dCSv/3pLSfJ0O3BRpI4= =/+7R -----END PGP SIGNATURE-----