-----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-14.0-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-vtiger-14.0-jessie-amd64-xen.tar.bz2 3419093ac07d7f6db055998efc248fea $ sha1sum turnkey-vtiger-14.0-jessie-amd64-xen.tar.bz2 c1be6fe93ac1f41d044289809b733204e7828ae0 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMdiDAAoJEIXCXpWhbrlN2SoH/j44I8HPDHNtxSDaIrue4pJO 3vTWdXJ//YqAJKohMqF0wCl21AImfxb847iE6NcPV2l/TWdil5033HzfCShVEshF Mdrd6DG5Xtbllb71Oopa8V0IN9HODzZERB08H+rasNRrn7qilJp6aR/1+gceE4ly YXpOsHQTb9cnm+wlHXpL3i603lWaKqwHc0QE1dGqf3dmIrsC5qgUlHpzumtVvsWX uIWqXAeZlLLkyPsCy9O4AY1zedQKbqVRivzAIoXFAGccHbwdryImXvtvHOogGZZk krTRdPzGazqeXy1EhzkpzzqXMN+W+aatVrcVIvfDuknaVXOfipdlevkRYJtX6uc= =C/9c -----END PGP SIGNATURE-----