-----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-tomatocart-14.1-jessie-amd64-openstack.tar.gz.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-tomatocart-14.1-jessie-amd64-openstack.tar.gz 57d2895a57731994e60364e47a54ad6d $ sha1sum turnkey-tomatocart-14.1-jessie-amd64-openstack.tar.gz 15158fbf72d6c2eda43f63b1983a2e2c4e9b8649 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn7AAoJEIXCXpWhbrlNPg4H/isdVQkClp6BNNGeAU4Fj9Ys 1wTzBcf6v8ULheunIT1j1RawH4J/j0AjdGac0Zk1SwLsJlYcMXldeHZts5uuCxlo PrAeRKKceMYo3Dd0MoS16uRbZb1eqR1Egr6gOzHpkqfPzrgwbTeSh0aetalAy2tR 89+earmZh7voGBi+kTSeb6bIPldPbMgtlUEoI2rC/dTu4qQ0s09/N0VNVIJFSqSD 0JJ4BaymDL7KU+yCYlnave3zXyABIAQUEVOzSlTu/I1xYfwcbiydzsiNkpxEZEej h4Slx6i/LQhzH3LpKJIdCnEO6KzmeI+sYgfiFdSbF1PpmSs63hcvVTRrIvULiCE= =VJU7 -----END PGP SIGNATURE-----