US Patent 7706574 Identifying and protecting composed and transmitted messages utilizing keystroke dynamics

A system for authenticating messages using keystroke dynamics identifying a composer of a message using diagraphs transmitted by the use of an input device. Keystrokes are gathered by modules that determine the timing factors between each keystroke and diagraph that is created by the message composer. Once sufficient keystrokes and diagraphs are monitored that allows a generation of an identifier of a unique message composition rhythm, a unique signature of the message creator is stored within the created message. This authentication method is embedded within a message. When a user tries to access or authenticate a message, the user will be verified against the authorized signature contained within the message or authorized database of readers. If a match occurs, the user will then be allowed to access the message.