-----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-mantis-14.0-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-mantis-14.0-jessie-amd64-vmdk.zip 1da9a74905b50daa7dbf6ed54b501f9d $ sha1sum turnkey-mantis-14.0-jessie-amd64-vmdk.zip 30c7f18ff7ee43b6194fc1c66e4cebf45f5ffabb -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMJdXAAoJEIXCXpWhbrlNWrMH/i/JH30fXOlGB9+bcL0szfkK dZ1nNoUPt/jRJubMk7n+fp0BsWedmBFa789sSizHjWOhr99uHgrc2DIYoUyHaNNq qMDV79xQyaRV1Y4B/nOISwOy2FnyFwiqpK58NrwcDea8N9QBW7iZOkDOP6arF07H /eDfciA3D36HSoFT15v9+Wo75/y+M/zYse1nApfGoWT8YQyLEMd5M6uDhtNTtBmY Xsoh7hWkoKgRB7HdJKrbU5ymxSR4tBBUUbjh7rG+sjQD+J3qoaWbNiSivuJSRBCR bDPjh5a11DtAYWiGjJUeZxmMG7sCwwtu/vjaymwrEAdx5OxtqM85hFxrAjSQ05E= =pYq0 -----END PGP SIGNATURE-----