Collision in Fresnel domain asymmetric cryptosystem using phase truncation and authentication verification

Optical color image encryption without information disclosure using phase-truncated Fresnel transform and a random amplitude mask

“…If a ciphertext or phase mask key is not used in the decryption process, any information on the original image should not be revealed. However, in some existing PTFT-based cryptosystems an unintended information disclosure problem has been encountered [18][19][20][21][22][27][28][29][30][31][32]. One of the decryption keys used is the phase of the spectrum.…”

Optical identity authentication scheme based on elliptic curve digital signature algorithm and phase retrieval algorithm

“…Recently, there have been several studies pointing out that the aforementioned encryption/ authentication systems are not resistant to collision [34][35][36][37][38]. Situ et al studied the collision resistance to a symmetric DRPE system and showed that Fourier and fractional Fourier domains are not resistant to collision [35,36].…”

Optical asymmetric image encryption using gyrator wavelet transform

“…Even if an opponent knew the encryption key and the corresponding ciphertext, it should still be hard to recover the input data. Thus, a central role that such asymmetric encryption system plays is an effective trapdoor oneway function [19].Employing different optical domains the security of asymmetric cryptosystem was further improved [20][21][22][23][24][25].…”

“…Due to this reason, users are stuck with the basic key management functionality, which allows them to produce, delete and deliver the keys under the environment of network security. To solve this issue, an optical asymmetric cryptosystem has been proposed [19][20][21][22][23][24]. In an asymmetric cryptosystem, a pair of keys, an encryption key (public key) and a decryption key (private key) are entirely different functions.…”