-----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-processmaker-14.0-jessie-amd64.iso.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-processmaker-14.0-jessie-amd64.iso 55cf21b7410d4d482a832e055bd8772d $ sha1sum turnkey-processmaker-14.0-jessie-amd64.iso fd518b5587c67a9ebcec66e3517bd0677d7e5a0f -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV7BrqAAoJEIXCXpWhbrlN+3gIALguQYtOazikvhzIgKMm+lXz 8h62qEz8KzZD4A4Zn6QFY8TBI5likhe3mzHcT4jV3IHNPCicek6Jps4JQV88ZWIH Z6o4mdSeeDUe18b7DFfPIdgFHkedLdAFKj4F+doYkzWRJITI24QmSeYK2djxMNsW YnMjfemAkXbDlxHJsGML2giNgJLOsEt9C6WJb5HaW7oIwcjS3SQjzfq8Z5GZyBxY WZaWqkaBzI+MWsxiOQdnlMcAw6GgmoCoTYmiFbg8TfSGiIxvioKCJLgqBl0SbYUf /io41ZIoGmQpcvkh9L5HHyN5AYtIkxljW/QpXOcwYDKD9MZJhWctIOsNNE/wPCc= =5k6/ -----END PGP SIGNATURE-----