-----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-lamp-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-lamp-14.1-jessie-amd64-xen.tar.bz2 e42ed78b5438ab88f3309379aabd6a9c $ sha1sum turnkey-lamp-14.1-jessie-amd64-xen.tar.bz2 f005f40bcec286eec55078246951ae030833d491 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn0AAoJEIXCXpWhbrlN8/IH/1xsJcCDmvT9uqncMAPcVLHj 9rm0YeqE6tExfEjQfe3UCLyJDFEXdO0QcArLE/jwGFc3VGSpIEFm/xXuE71N6rDY kjPiiV3r+frxol1IMgDe63X0KDVWy+X/s4FLulvu46Nmfvr99S1kv0z5lXBYDqwW W0s7ULjK3ryw4+P56DYaKQIR5G+eCp5Sz5+1sKwRehq40/ak/0a9oEcCj9WZf7+C 1F4FxIMl8/zkxqpsqufS/IgXmtlICVw+oHZnIicrfD9wfYu5l6GO5u3DDMJlq9ek Ac/h9ARjEg9JfGWvIJ2GIyIxfuWjeG/sXIFJkIbplk9NliiKtz5MtdWBjPbyqP4= =g2wO -----END PGP SIGNATURE-----