-----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-14.0-jessie-amd64-xen.tar.bz2.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-14.0-jessie-amd64-xen.tar.bz2 12a1be2051db384646c55da7be8e63a7 $ sha1sum turnkey-owncloud-14.0-jessie-amd64-xen.tar.bz2 b87475ac32cb265893bf4156f9296ca545b6a931 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMdiCAAoJEIXCXpWhbrlNVHwH/1FPpL15j3MKGxbilIYmNpcm gfrY6XACZGtDfWe3Z6i4plT5gb/i2rySJeukHEr9O45rnFM8NC9WcuqRqMyd04F3 dEjw29TG0GERxIQmnqFh5IdXp//BYdMI/rOSkv1Fzin7ZKq0FbCJsXgMVcrGHJkA zcJLe8mG8P+rr5EniHWKpPl1DLwS246JjbJMY8PhcwctKTUXQQoC2RC1Nj5Nrf6g rdbUBH9tgr/7KnWdln27JawogtGj4jVqlQmjBziAW3avPLTl3Xp5sKDsetx4vvT7 O61Y2bcEkYyF7ITRj0ZhNADORuZDceqchJUHFnJVmcHZnePEmpxQxU9kxWxDlLU= =tFH6 -----END PGP SIGNATURE-----