A High-Security Privacy Image Encryption Algorithm Based on Chaos and Double Encryption Strategy

Faces are widely used in information recognition and other fields. Due to the openness of Internet, ensuring that face is not stolen by criminals a hot issue. The traditional encryption method only encrypts whole area image ignores some features face. This paper proposes double-encrypted algorithm. contour extracted, followed two rounds encryption. first round algorithm identified image, second entire image. scrambling diffusion at same time, keystream cryptosystem generated 2D SF-SIMM. design structure this increases security, attacker needs crack get original