一种新的信息加-解密技术的研究  

A New Information Encryption-decryption Technique

作　　者：王怀彬[1] 孔德慧[2] 王鹏涛[1] 

机构地区：[1]天津理工大学计算机系,天津300191 [2]北京工业大学计算机学院,北京100056

出　　处：《光电子．激光》2005年第12期1496-1499,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60375007);天津自然科学基金资助项目(033600211)

摘　　要：研制了一个新的信息安全加密解密系统。该系统采用迭代傅立叶算法对全息图加密进行优化,使用纯相位元件作为解密密解,通过在简单的光学装置中叠加加密全息图和解密密钥实现光学解密。数值仿真和光学试验表明这种技术是光学解密的一种简单易行的方法。试验系统的简单构成展示了该技术在信息安全认证方面的潜在应用价值,有利于在不可见的元件上作信息解码,计算机仿真展产了该技术的有效性。A new encryption/decryption system is designed for information security. The system used an iterative Fourier transform algorithm to optimize the encrypted hologram as well as the decryption key as phase-only elements. The optical decryption was implemented by superimposing the encrypted hologram and the decryption key in a simple optical setup, Numerical simulation and optical experiment have confirmed the proposed technique as a simple and easy implementation for optical decryption,demonstrating potential applications in information security verification. This system provides an advantage to encode information in an invisible element. Computer simulations have demonstrated the effectiveness of this technique.

关 键 词：加密 解密 计算机全息图(CGH) 联合变换相关器(JTC) 

分 类 号：TN911.72[电子电信—通信与信息系统]