Abstract: Due to the wide application of PLD in the electronic devices, the vulnerability detection of PLI)has become a challenging subject in the information security field. By analyzing the existence form of PLD security vulnerability, a security vulnerability detection method was proposed, based on state transition diagram. Using off-line reverse analysis and on-system reverse analysis technology, this method unifies the detection ideas, which is suitable for different PLD security vulnerability detection. Then the detection algorithms were proposed on the basis of the existence forms. Finally,the effectiveness of the detection ideas and algorithms were verified by simulation.

Key words: Programmable logic device, State transition diagram, Security vulnerability detection