-----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-vtiger-14.1-jessie-amd64-openstack.tar.gz.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-vtiger-14.1-jessie-amd64-openstack.tar.gz a7605ae25c3fc990fca204907f8a7800 $ sha1sum turnkey-vtiger-14.1-jessie-amd64-openstack.tar.gz 8c008b3e47c20706a640d8fa8b1d1c0d660e26c6 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn8AAoJEIXCXpWhbrlNQm8IAOi8Gu9R7/eK66/MagB1Lr5A o4AogDvgH3WMDcbfnZO9v5vdzCNGfJsUX8c/nQpx7gmTcVNOsp0pZp/amk6mk5I9 rtBvMYigg7FVRFqQcFMfo/1B4aV7i3OOviNjwEr7xoSuStf0R1nUSfdF8+3L++2J /0w+SbWlZFPFlSOYKrAONuQhRChaBLuW3aXVmkwqxBjXqRdZEI3KHFxaAFWi/aDE 5Dl4WiLEVyRLM6A87UVxN6YjgWKY1Tm5tyhDbnGyVnzY7x1JnDkp+hs1F7OcDNn5 vGTfFwKjUjk+YS1AVdcviUCX5rawX24ADwZQ02l3osAX2WR0jvlUpT3nVwTnFrE= =YrTY -----END PGP SIGNATURE-----