-----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.iso.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.iso 06b5615c26f8660ab8b48d6d48b35958 $ sha1sum turnkey-owncloud-14.1-jessie-amd64.iso c342b6669137c8581e961f53fee7d0063e5bf8b3 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPzAAoJEIXCXpWhbrlN8pwH/3IzetQE826LMABagR/aknFn B3dp2G9RsPEgBUnLv5Eujz1UEF0KYBgqV9uvopAFhs6anQGit5xey6XkAVux77fw mUM9lZ58I9O74xQvRQU8I2qaMGd9xJaw1akxGCYGVHYH30m5Fs/B+1QfyORYp28Z mgySxR09LeGXBoyfJ5ZyKZFd8EXi4MC2V6jjylfFqwtQDvWCPFeuOk++OUlFVH46 RLLq2PKmzm2bSOIYfFMEDQyyuDTIUNgXwRHfFq9LfWzhpU5G+XT5PUG2EtoAPeJM 5bQY7o2703jUVsxl562+6McDHggdDpiOyzc4pyT/F6+mKXbnAoL+JRkd2sj60Y0= =ASb+ -----END PGP SIGNATURE-----