In order to solve the problems existing in steganography based on modular function

this paper presents

n

-dimensional hypercube modulo mapping steganographic algorithm.According to modular arithmetic properties

the algorithm defines an

n

-dimensional modular function which

n

pixels values are mapped to a data in

a

n

-ary notational system

thus the algorithm realizes that each secret digit in

a

n

-ary notational system is carried by

n

cover pixels.The algorithm can get different rates of embedding and visual quality of stego image when we choose different parameter

a

and can get better visual quality of stego

image when

a

is even number and we choose bigger parameter

n

.Theoretical analysis and experimental results show that the proposed algorithm

by comparing with many steganography

not only has the function of these algorithms

but also has a better visual quality of stego image

better security

and stronger practicability.