Design of Lower-Error and Area-Efficient Sine Function Generators for Image Encryptions Using Logarithmic Number Systems (LNS)
Tso‐Bing Juang, Wei-Cheng Lin, Guan-Zhong Lin, Shi-Jie Jian · 2023
In order to protect the privacy of images, sine functions can be used for the encryption of images. However, the operations for generating sine functions are becoming the area-consuming bottleneck for image encrypt/decrypt applications. In this work, lower-error and area-efficient sine function generators are proposed using logarithmic number system (LNS). Expressing the sine functions using LNS-based representations, we can avoid time-consuming operations. Synthesis results show that our proposed generators are area efficient than conventional with lower errors.