-----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-ghost-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-ghost-14.1-jessie-amd64.iso 1af7f5582c3677733295ddfc96dbbff6 $ sha1sum turnkey-ghost-14.1-jessie-amd64.iso 04b8b04fd93a6542122ec31d7ff4b2cfad60b4f5 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXRb5nAAoJEIXCXpWhbrlNwKEH/iFL/4EQI8XgQMRkmMQDJE4H FAw17/Wu94GZZBYq6vYhsF4qiIPK98WhFRjLtm0PP05qeV10gNmoH09ka1r+7PrD TuNMY+DmDz8Gm7PswQtsthsK2YU9cVl6cHNV7Htm+dMtVg6DwbThNHb2GReLzug6 HP5gp//EXwt+ueZxmIYvLMOcBZpw+vVZlaDDLRzqR6vWTHoRMbcDjzTyWK6Lbva8 y3iZe6Rxf6hvH77zQwohpjJcwsrdgnrZ7FmEfE6nPdKBkhQVwU/L8iTtJbsY3s3U 5mV4HANHrHcMN78dKNU+QZ4pAgW1oaidhQ5NUY2FlJ0MJB/B+tcQJFhNnNfp5L8= =53Z2 -----END PGP SIGNATURE-----