-----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-14.1-jessie-amd64-vmdk.zip.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-14.1-jessie-amd64-vmdk.zip bc001e34454765a3c8941672d04253be $ sha1sum turnkey-vtiger-14.1-jessie-amd64-vmdk.zip 934db8cd4faec075a6c7d9bcdc422c66c72ccdfe -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn8AAoJEIXCXpWhbrlNrZkIAOm4KOIk9aok3yawvSEc9V32 tLPn+xk0rut7p8rE0L6USZOieQGt4OSDznxP3m3jZkm6MiFkEWgx6wYj4Ax4qYqx umY+N/HvFbwaQzbsDQ3GFnYGjHPuGiIoDQZq81tber4O0Lwr/nyvZZf817MI0EM5 QaGh729/hOjYJY8UbZVp/xtK6rE3RV1K4H49rgZjcAbCIXPm1dgV7n55FnjLJhn7 NV2oSSKKkFwAsP2kwG+/KCQowEn6tCeWjZ6DjAmrPSVV15yiZlFGfuRMvUWxRaPp AZkfR147mwjn/dw/QFYvxfpijaVjIQqCOAjaJsjSqBx+czIAvmzhLBzHBzmzcHs= =dVnK -----END PGP SIGNATURE-----