In order to enhance the capacity of steganography

in this paper

an image steganographic algorithm based on Pseudo Random Number(PRN) is proposed.The same Pseudo Random Number sequence is generated by Pseudo Random Number Generator(PRNG) in the parameter certain situation.To utilize this nature of PRNG

the Integer Pseudo Random Number(IPRN) is generated and regarded as an auxiliary pixels value.First

two secret information are hided to one IPRN and one pixel value

and then the secret information which is in the IPRN is displaced to the pixel value.In this way

the two secret information bits are embedded into the pixel value.This method's characteristic is that the capacity of steganography will be enhanced in one time.The experiment proved that this method has a very good security performance and the hiding capacity.