-----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-vmdk.zip.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-vmdk.zip ec6c39a762d091f6c1a686e2a4bf6527 $ sha1sum turnkey-owncloud-14.1-jessie-amd64-vmdk.zip dcacdfc20aa39c5b7fdffcb8e0801e469b8bd828 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn3AAoJEIXCXpWhbrlNL6MH/jK+lAbULbL9nVMofdl38d2L TuGFqHnNkvlXP0u2pZswv95NQtHhn9/3sN1J9NOO+c8OiB4pL97bEMVMY1Qsnxh/ cHkaxB/7ct3UT8fnobx3br1vkwEswo6adH+o6pJMlfR1Y/YQapgy8AyvwCMMoeb6 5IcR3gf36l9aQOiSp40oelQjV70CmRn1in9tuhdSaoAy1gDl+qvEL+dWrN+ccUpf 2FvWdx0yfuIXEHnArY1Ib/XFmNxGgT/rJphnT258IwMlyAvxRXKK8qmCx6IodLFf 9iFoDDb4wrMnwlvaywVW0HtOkNhTCevHByRDzpiu4bWKD8L7WLqSMug1PgG3k7Y= =EXjV -----END PGP SIGNATURE-----