-----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-plone-14.1-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-plone-14.1-jessie-amd64-xen.tar.bz2 20c9482986404ce58a1915b69f4b241a $ sha1sum turnkey-plone-14.1-jessie-amd64-xen.tar.bz2 2358fa30cc81dc07539d2e25c91edf668282ab31 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn4AAoJEIXCXpWhbrlNk20IAMQ1TO1q5kod4VLdxf6roX7P OfuRcZSTOVP6VozPQB6w2f1hAla8PO5fkT8xLtrOxVYeiuGjhZoDv7/i9kl82A9B Gqf9/qUwSmrMwQD5RzxszlIDujrT86Pz7ZxHpZntIOzZXMW038uK4IWJT3MC7vVq SazMLCIF+PLMJQLEHMiPHJ/BQejx/VxmWutWbcUnolYQ37ucLecwSdY6reO7c1ez YrU/hqvjtl0FHI9rQos2yMgLrb2iemqvhwZ3tRr6hssa6SJb+pt6K4pDtK9kef5e ZbYuVXLj4AU7rywbI5LclmlOEENlNpALzHS2wLDejt5mLKNvy1Rxo1OZBEp6lT4= =7bjr -----END PGP SIGNATURE-----