-----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-simpleinvoices-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-simpleinvoices-14.0-jessie-amd64-xen.tar.bz2 11e78b4c31e2ff05721d858ee26f0828 $ sha1sum turnkey-simpleinvoices-14.0-jessie-amd64-xen.tar.bz2 ee770252148e1cdfa5cec9dc5e8d17daac20ca94 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMdiCAAoJEIXCXpWhbrlNeroH/jOydxXM/7dpaYfUkMimMwiQ zUhuB54C0Zi44BXBeBYE8esp6aR0P/KsFMxuN7vmnjdkpxbt2HIzHdTq1z5l837P cHMrO1/Zizm8Rom9HlcCNabhOsmKuCDggBh2il/EEbfespCzFKRP4gzZBULcbBev Z/Jz/84GJMjtSYcbsbMQOIBKWnyRI/6j3CLAvlvq/Dkuxnwg59IgY6bmQss+0ehw 5jM+V7c1PqZjkj7ZdsoK4IZSSp5L1qFZvlNJFmfAEhmkDPLPUEqE+b1Nk7dmbIye dwH5AXg6vIavif2/KbpAYi41GL5hKe+W3UdjDv1JfUaSFfYPn+Jj79oN3Tk1Jr4= =nrh+ -----END PGP SIGNATURE-----