-----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-redmine-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-redmine-14.0-jessie-amd64-vmdk.zip c0e66e11a4d3786a443f56a828d55f52 $ sha1sum turnkey-redmine-14.0-jessie-amd64-vmdk.zip 7f9d29e8f151fb5999342c1fe340e6a94227bf18 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWTDfIAAoJEIXCXpWhbrlNSrgIAIBZFraHpOJmZ+I4jxXn1q6m GKpYA4oN4rjz20fDIQF+06vSaRYN2HV5f80O0GkjxQ7OBGlWUsNRE67Rx3JM3hX9 xl2Y8w0ZdAgfXjW6PEgoqnlKZIMGceVPD2jA8hG6KKUzGnvhaaqbquPyZXEriTsq yl4DCm5PQAj/Jbf7viss4w6PHwaDpfuhbJYvVNDdTVfslzYg9+IDuqARpLcmxo+G IaJzypLKnGevGRevQ8ya+7S29aUw7MWCXYxorr1av3I8FyyQgd6U/PDGReEplOvn bhXpDevVUTGEKGVXmb5uv+hfPeA9R/QCrt0ub3+u+er0hDOrcPsp7c9nBrydZBk= =TM6Q -----END PGP SIGNATURE-----