Securing multiple information using chaotic spiral phase encoding with simultaneous interference and superposition methods
Securing multiple information using chaotic spiral phase encoding with simultaneous interference and superposition methods
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DOI：
10.1016/j.optlaseng.2017.05.001
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发表时间：
2017-11
影响因子：
4.6
通讯作者：
M. R. Abuturab
中科院分区：
文献类型：
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作者：
M. R. Abuturab
提出了一种同时干涉和叠加的混沌螺旋相位编码方法，第三种POM和第二种PM采用相同的混沌螺旋相位函数（CSPF），第二种POM采用相同的混沌螺旋相位函数（CSPF），第三种POM采用相同的混沌螺旋相位函数（CSPF），CSPF包含了7个敏感的解密密钥，这些密钥是非法解密者所不知道的。仿真结果验证了CSPF的有效性。提出了一种基于混沌螺旋相位编码的非对称多信息密码系统。在该方法中，多个授权用户的第一组秘密彩色图像和第二组秘密彩色图像分别通过干涉和叠加方法进行非对称自编码。利用干扰法得到第一组授权用户的三个相位掩码。通过叠加法获得第二组所有授权用户对应信道的两个相位掩模。第一和第二POM被单独地复用。第一PM也被复用。用第一复用PM调制第一复用POM，然后对第一复用POM进行回转器变换，对回转器变换进行相位和幅度截断以产生第一加密图像和第一通用解密密钥。将第一加密图像与第二复用POM相乘，然后进行回转器变换，对回转器变换进行相位和幅度截断，以生成最终加密图像和第二通用解密密钥。第三个POM和第二个PM是用于相同授权用户的相同混沌螺旋相位函数（CSPF），除了三个单独的解密密钥外，还用作特殊的解密密钥。这两组解密图像没有串扰噪声影响。对于解密，已经提出了一种光电系统。仿真结果验证了该加密方案的可行性和有效性。
HighlightsThe chaotic spiral phase encoding with simultaneous interference and superposition methods is developed.In this technique, both interference and superposition methods are exploited to encrypt and decrypt the secret images.The third POM and second PM are the same chaotic spiral phase function (CSPF) used as special decryption keys.The CSPF contains the seven sensitive decryption keys which are unknown to illegal deciphers.Simulation results validate the viability and security of the proposed cryptosystem.A new asymmetric multiple information cryptosystem based on chaotic spiral phase encoding with simultaneous interference and superposition methods is developed. In this method, the first and second sets of secret color images of multiple authorized users are asymmetrically self-encoded by interference and superposition methods, respectively. The three phase-only masks (POMs) of each channel of the first set of all the authorized users are obtained by interference method. The two phase masks (PMs) of corresponding channel of second set of all the authorized users are acquired by superposition method. The first and second POMs are individually multiplexed. The first PMs are also multiplexed. The first multiplexed POM is modulated with the first multiplexed PM and then gyrator transformed, which is phase and amplitude truncated to produce first encrypted image and first universal decryption key. The first encrypted image is multiplied with the second multiplexed POM and then gyrator transformed, which is phase and amplitude truncated to generate final encrypted image and second universal decryption key. The third POM and second PM are the same chaotic spiral phase function (CSPF) for the same authorized user exploited as special decryption key besides three individual decryption keys. The two sets of decrypted images are free from cross-talk noise effects. For decryption, an optoelectronic system has been suggested. Simulation results are presented to verify the feasibility and effectiveness of the proposed encryption scheme.