-----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-owncloud-14.1-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-owncloud-14.1-jessie-amd64.ova 90a46b40ec08fcc58907e0f6140efa17 $ sha1sum turnkey-owncloud-14.1-jessie-amd64.ova 9cc7af0f0ee3a64d9340ea9fb19bdfbe19db30d2 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn3AAoJEIXCXpWhbrlNlwYH/3R+spMsDZYdFqyhDv1yIrYO qo5zeB/eyErhN35zN4xePc/LQqu3ZNiB6zjt0GBtwjuvoQmRHI4/eVEPA3vqamR5 7rL84KEs4pz03cxo8Vud/KZnFEArsOxuRR9Pwif5EdUtqn0VddvEiH+wMnTwz6FL pvjdLjocjoR62UXwpcSlrzePdZRpsNmYZSBuBju6n4FYyMn7SlNP6Ql7Apvdqrv8 NHedIL6YXNXwbxZ6niyiEt71M8l+fmXpK8OvJLq2xG8Nolfpxrd6HjYaxvvW0n3+ gReQnLewB15I6RFZMzNdlY7N8E9fwzsoJ2HH+7GUq5y/vAt2F0qEnirXpcXuk9I= =rPps -----END PGP SIGNATURE-----