-----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-core-14.1-jessie-amd64.ova.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-core-14.1-jessie-amd64.ova ce0c6adfcc48f7ab103849fef67fd84a $ sha1sum turnkey-core-14.1-jessie-amd64.ova 42cd09510170f5f9367dd6301540261eeac83a8e -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnxAAoJEIXCXpWhbrlNYM4IAIRDdrRytpikOVzwYS6QrlKk obls/mTLFqDtK1csa07+ZBSc364kR5vm4GZt3knG+476Hcxcf7grwfKiqP2OGdGG +Mrbthp/x3Uf/xgJc9JAWIm8uIOVjGF8DDneXHkAGbqQKs/Y4OqINcUc6DF5c7oZ G8cGfbr1qMkWDe4kFARsItaS0LVV/SSpOhsKXJEAr4XAV1bULo6j8M9q6IA7fSND 7ogOODhgFvzriZNf88HiRpBW8jnB//bfFrPJU20yYGK3nAKU6ob8FesgFZ19XKlv RiB6kvZqZ5WpqviAXv2nR8nxn/2odGM1ZtyiqbXqcvw0Rgp7jY1TRzPfgT2ct4U= =adQ5 -----END PGP SIGNATURE-----