Known-plaintext attack on optical encryption based on double random phase keys
Xiang Peng, Peng Zhang, Hengzheng Wei, Bin Yu · Optics Letters · 2006
We demonstrate a new approach to known-plaintext attack on an optical encryption scheme based on double random phase keys. With this attack an opponent can access both random phase keys with the help of the phase retrieval technique. This demonstration shows that an optical encryption scheme based on double random encoding is vulnerable to known-plaintext attack.