-----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-espocrm-14.0-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-espocrm-14.0-jessie-amd64-openstack.tar.gz 462ee01caecb7fddb27e8da4a0d379f1 $ sha1sum turnkey-espocrm-14.0-jessie-amd64-openstack.tar.gz e6f504112ef76518c245e098dec0fa1a02261d78 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWXYG9AAoJEIXCXpWhbrlNohIIAOvegoRNC4jQRswr5xRjDL1L PRCAf2/lEIhM6fcUEpyvs92WSDI+CNOsGLE2TcEl7QjfZMzo+mLPUhCzdDdvhrX9 ej6lBZs9i4GhZlXlFEoiuPRMOXPefroWXDP7TT91SwIWAnKfiL9Q8VJZ1p6c08tI 156iZ2bTM7oTtNy6cbgyHY/LNcuzNjJjGMHINXyMCfvYCn9pQ42xi+Qpxe5U5YIa Deo48tgfGpvmd7WTSECc4E2jBb4oT1wVK24QHWnbXf/d4V/ZYG4RropIEqnF+d5Q gQSayFAoNMfzQJ9ZCaDhxmPyAqYqguU1WAK9nzvI7OkvGVBwFMZrvBgymUeEfiw= =RgJd -----END PGP SIGNATURE-----