We propose a novel method for image encryption,which is realized by the Collins formula with the random shifting method.The Collins formula can denote different optical transforms by one expression with different ABCD...We propose a novel method for image encryption,which is realized by the Collins formula with the random shifting method.The Collins formula can denote different optical transforms by one expression with different ABCD elements.For a generalized optical system,the ABCD elements can be randomly chosen,so the keys are increased and the security of the system is strengthened.Finally,some computer simulations are given for different encryption systems to prove the possibilities.The encryption effect is good,and people without the correct keys can not obtain the information easily.展开更多
基金the National Natural Science Foundation of China under Grant No 11147138the Natural Science Foundation Zhejiang Province under Grant Nos LQ12A04001 and R1090168the Natural Science Foundation of Educational Department of Zhejiang Province under Grant No Y200908864.
文摘We propose a novel method for image encryption,which is realized by the Collins formula with the random shifting method.The Collins formula can denote different optical transforms by one expression with different ABCD elements.For a generalized optical system,the ABCD elements can be randomly chosen,so the keys are increased and the security of the system is strengthened.Finally,some computer simulations are given for different encryption systems to prove the possibilities.The encryption effect is good,and people without the correct keys can not obtain the information easily.
