-----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-vtiger-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-vtiger-14.1-jessie-amd64.ova 8cd7f158a59b3f1b1d5684627d4989d4 $ sha1sum turnkey-vtiger-14.1-jessie-amd64.ova 7d53d20bbee40ce01153618bad87186688f8bc32 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn8AAoJEIXCXpWhbrlN5PkIALGTF/i9GOJ0898CIWp+/FHJ M16sSPvoobQRx6O+xytvh3kZqa+8d18zXvfbzgLYR7Dnw5lipJT9x2FyTNGJa6Gi Ho+CzhMjBZpgUNwfH2I8gegY//u7PO9VoLYO1TB9YZvnHHAwtBmX2I6e3GI7b/yA HR/MFCLZ4jBRy8UXcocaIHmRojqYYaB/2JcVO2SiI6lEHPISCbahUXp6pzph3cPq hAnmgRgpQb/ejIdxBPjBHi9t4SZ0ST1/E4RfOFIT4RXW0tks3qZRAJ2ErlZ/cZuE OUmqB4GnY9xYwytT1L/FFvWjWidNUH7BMNr/EiizMNC5WlSkVvTO+ulAWnY2JBo= =sNvA -----END PGP SIGNATURE-----