-----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-zurmo-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-zurmo-14.1-jessie-amd64.ova 4ce4f8fa41103dbb5bbe4acf2e0cb3c2 $ sha1sum turnkey-zurmo-14.1-jessie-amd64.ova 419f3c410e5b01fb585323a37906e5a20b975568 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn9AAoJEIXCXpWhbrlNojEIAMZq9IpVKIeAXV3fJPlezY3z aiN5CA/F3cbu7JcDuDYkr19pF4k+L6YwIt82Hm4Mqf7VlqFlrTTZzye914k/kHDF H6neMUWNG53Q4wD0fdOG1bgx75z5NlGvEG2VYOIBjJn+ww+jznvrc8SmZCEzxJYR OmSzMCZDiOEzimkNO52W1s5gfmfGK0FBo+vS0/4mqpEI21I9UTYmq1fi4sn+cmtf OhHBM5nR+NrRLwYw5McADRI86+ERtLj0ClBsSypiNzeXqZHLDbdtnUnv09aFM6j2 KtEuI3PAIA8YCIUOZqFXqJu6dzY4eG0i3UuKuWJ5SPk7n034qS1jjNaT80inwlo= =CmIO -----END PGP SIGNATURE-----