Nonlinear image encryption and authentication based on phase truncation and reservation in the cylindrical diffraction domain

2020 ◽  
Vol 67 (5) ◽  
pp. 430-444
Author(s):  
Xiangling Ding ◽  
Yanming Huang
Keyword(s):  
Image Encryption ◽  
Encryption And Authentication ◽  
Phase Truncation

A Genenral Feistal Structure Based Color Image Encryption Algorithm

2015 ◽  
Vol 742 ◽  
pp. 294-298
Author(s):  
Bin Lu ◽  
Yu Chen Li ◽  
Fen Lin Liu
Keyword(s):  
Image Encryption ◽  
Color Image ◽  
Encryption Algorithm ◽  
Color Image Encryption ◽  
Plain Image ◽  
Encryption And Authentication ◽  
Image Encryption Algorithm ◽  
Feistel Structure ◽  
Block Encryption ◽  
Encryption Function

A General Feistal Structure based color image encryption and authentication algorithm is designed in this paper. The plain image is first permuted, then divided into groups of size pixels and encrypted by block encryption algorithm; finally the cipher image is obtained by performing inverse permutation on the image. In which, block encryption function is the kernel part of the encryption algorithm, and is designed with general feistel structure. To provide integrality authentication function, the last cipher block is the cipher of the sum of all plain blocks. It’s from experiments and analysis that the algorithm is secure and valid.

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