-----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-trac-14.0-jessie-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 turnkey-trac-14.0-jessie-amd64.ova 7f9d7fe04f86c1979099f9b83cb4ddcc $ sha1sum turnkey-trac-14.0-jessie-amd64.ova fc47746a8f8d1b35bbffa58de456753d39de40a6 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWTDfJAAoJEIXCXpWhbrlNTU8H/ik+AGCdvBcbYxNETWkq+zZp i7+ORomuLQaluX4j6dZLPyGWEIy+LkVeX8uCP5Fy6mxmVAmTTBsv+dFeiQtlowSW UsxleO65Asir/7NCK1mpggFqLDrLv9oqBLa0g7uHdx2UOllWKrHLFNi3kqzp/zNC Bi8k40m4Ook9wuYF+TSXhNJGG46Y5QEn+ucW2fMO2y7LQg1dy7+/H63vzWtYr3V7 FJaaPXUb1lXQSJYcD76Mam+CePXMbiSq7KwHMtcz26uWdvdBbvqoc43tF4zA515n dgffF6Jkc1LOI+ejMzHZ/56XTWITYuoxinEs22zbxGPDDRRN/xa6KEdDARZdEHA= =NwNx -----END PGP SIGNATURE-----