-----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-icescrum-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-icescrum-14.0-jessie-amd64.ova 7605bbed42c8d1cb762fbd2cc7defdf1 $ sha1sum turnkey-icescrum-14.0-jessie-amd64.ova 9b00dea8a146ed83a48e55372dbf7661340f31bd -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMJdWAAoJEIXCXpWhbrlN6FUH/2yu50C9hTs45g6RxgOGeIBb sy0zPQficSB1yl4A7ZfltoNTWNHyDT/DTwgDdwfsDkiorbOZQ+C4h330BrqSSdeM dGDMQjhAyu9gOnxSxZHFKE1e1wqAmgUVMbYNyUEkt33xc15pg6ZFfuE1zMYbPT7i kp5EjhQHoUM2B3CzpwWgFwjiMBbthaKDjBX1cx7chy+uFvlHSYe9MQI1rRNx7Xdt 6zoICcvrSg5NSJ6LH8cISUD7soGbpiZaefjwuS5V+t/xlr+VJc4COGcsZkxRtH1o Po6YVOAQ0BvkYpcrh1UWAU3tghW4dUqENhpC2iCqrW1qjo1lZuLQC/nso6sLdFo= =gvvr -----END PGP SIGNATURE-----