-----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 debian-8-turnkey-espocrm_14.1-1_amd64.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 debian-8-turnkey-espocrm_14.1-1_amd64.tar.gz 4e34c57f182eb88c764cdb0ef9294636 $ sha1sum debian-8-turnkey-espocrm_14.1-1_amd64.tar.gz 25ee1bddb1d74001f1d3999885f311e50552dd6d -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnqAAoJEIXCXpWhbrlNikAH/jvEoav5pyKm1hcRCyTrs8gh a8IdIwI8o19dcz2V7zgOchuNhTteWPwcXKo4p7ERPCaGgvJYPRiCzu4weDwZ8j5c H68/tUjW08YT48IgM2xVh/ikiTv9GZFJ1mgq5uMncRXWADK4gbOnOtp1JzDSk59q Ka1g35Jjt8pxIeFhWgnwF0BA0PHO1p9I7K4P9COdiQjA/EjGCd8qj/01mkpn85iR D923vUVjtdIVi+y2e3SFYMjeITJaTiFFKPS+Tt4Y++m3rqwMr/XZipAuHmuBLnl/ lV3cdTbDQqG7aSsgqZlj7r+WyRoJ4v/nPCEJBDAqcOjoIWbJQliHMDkHHOk1Q54= =CYts -----END PGP SIGNATURE-----