-----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-tomcat-14.0-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-tomcat-14.0-jessie-amd64-vmdk.zip 3949350d591196cbd30ef3792effbf84 $ sha1sum turnkey-tomcat-14.0-jessie-amd64-vmdk.zip 8e9b6bf52502084d680f54f7d895524919d14f26 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMJdaAAoJEIXCXpWhbrlNXR0IAKCZ7SOhmfDIq9mKtVWbwz07 PMOnzZTUihPaOgLOhu5/IMV7Y1+LQyjVY7MlCocKxBTym6C45BYewdQY+1Gp7TZi ynqa/aSZX8IECzEpiVorHAo8VlgTA3LDMgyodmt1bDJg6+EuMcJzwpwG9QdmkYrG Z2u3E8/UufYyJHzrmyzsXKgiXMHa1Jm55ezhPpu3WitynNdT9jwNcPxQUOWdmAtj 4BS458FBkqZt58usantZ+7PsOAT7i59ObnPthy5qJItusIasGRNBtDr1HJ/xfoKR wxrz+w/KbSL+uq5WxdAxUmQI7qbAnivq/c/tevokFJji43Ss2iJ++3AKjBSPZQg= =UCbu -----END PGP SIGNATURE-----