-----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-revision-control-14.1-jessie-amd64-vmdk.zip.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-revision-control-14.1-jessie-amd64-vmdk.zip 37bb124211bff4f9d842d3863f700915 $ sha1sum turnkey-revision-control-14.1-jessie-amd64-vmdk.zip 3d73a50dad9c71573455bb5cd45a137f89d551ba -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn5AAoJEIXCXpWhbrlNLyMH/3ZuLrdrHLo2OyCK3Nm+hhb2 WbfEOU1XE89BXJXMBcvsLJyZhZpi0oPnIqJXjTaQxnhuI6F3qzX2PjiuL2buU2+C 4rsO6FetNPfm5WjZrlg8f44SqBatpkWaWabco1uTZHrBQgt7Vwd73nMSmguK52wY 1vqr7FUuOZ45iF7Qr5ncrdUXoATjYZSRZ3uZLCXEr9oIcn18T4E0KxNRxTfWnQzc 8VnLrYbpC35HPIi8KPfuzzX2+Evxl6ENyBygA+fSqBAxsq8yG0+x9+3HWejcBQ/u CIcjz2+pwOi7yrpuOT2nexe4rtNawnXk8a2hZQc1FcCMePekn0NuWER06jT23ik= =NigN -----END PGP SIGNATURE-----