-----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-redmine-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-redmine-14.0-jessie-amd64.ova 3d61a5a8ac787b909a72429afd92678b $ sha1sum turnkey-redmine-14.0-jessie-amd64.ova 6d853e7f03419049ce1e0499fc33dc68f6f427ea -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWTDfIAAoJEIXCXpWhbrlNQn4IAM5YmwUBqttAfqgyfyp6luL5 ciRd1y43NC8iBEgSJHtcX1Zrbe/DIC1zGBkzpsvmBR+W8TxCctr8Cio7rD2SkEHg 8VLbNO2vly9DaKXZetrqotf9XFJy/tF+PAuGbhf+LXtTZbNJvuAZdIvOI8vEmBvQ tnaXiD9DdPFUvrpM0sn3TI49nc3HEb7trNHxh0P/JZ+RjOICmmGCzYzgrRqRU1ja ZyCtxS2Q8ADZz1Z0s+kLPRhPhZZnums52Xc5k4Ytg7fKWYVc/6Kskj/3Z8sbDfpB AEunuAaRR7yawh05Wo0c51ar2INSwS4ZIQZMwhNlfc+6zVhn9K0ZGo6gET80Re8= =jriK -----END PGP SIGNATURE-----