Design of a chaotic signature strategy

This paper designed a chaotic digital signature scheme, which used Hash function to improve the high-dimensional Arnold cat chaotic system. In the high-dimensional Arnold cat mapping modular arithmetic is used, and because that the role of modular arithmetic is to convert a large number into a certain value range, so it is very sensitive to low-level changes. In the improved Hash function the high bit and the low bit are exchanged to resolve the high bit non-sensitivity to modular arithmetic, so the security of Hash function can be improved.