-----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-sugarcrm-14.0-jessie-amd64.iso.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-sugarcrm-14.0-jessie-amd64.iso 06106fa4138db2a8d1b8e66e77e33f87 $ sha1sum turnkey-sugarcrm-14.0-jessie-amd64.iso 33f4f7d67b85aa3d6714b4c85775c04e32f99506 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV7BrqAAoJEIXCXpWhbrlN9PIH/1twF8I2rLwlqQVqxMTw/mCA VoyTe4aTYVdiJi5oU1oSFGCVH6aNyoR3FzFwWmWsUXCY0bTM45WyeGyIMGNBXfVN UnhtUuKYDslhIEtix0UTT2u4WN+poFsd5ZUZOYFQ4wrQqnhlhzcKWLSKbnwsWvOT XGPz4McMN0xWGJk/05qcSRTMIxSFyoGxqKkxbEtl8jMCSn466pCL26ct2wX41kTc LKAFVSHfY+9/5NXmSrfIDrZin/ndIcfzq7CvkXSNqxDAoACabR0h+baI4EGoINId YAdjGVNUzhQAKVmcNAOjAUplzpq1+XeXYnAqf0JjGFu4IjC2roy7yhTTY29otgM= =SOko -----END PGP SIGNATURE-----