Abstract:

Because of the contradiction between one way and trapdoor when we construct public key cryptography will turn up. a new type of public key cryptography with oneway shell core function is proposed. According to the designing ideas and structural characteristics of HFE public key cryptography, the paper presents a scheme of one-way shell core function and shows that the function can resist the present main attack methods. Comparing with the traditional public key cryptography, oneway shell core function has the characteristics of wider inclusivity, more change and higher security. The function provides people with a public key cryptography of more flexibility.

Key words: public key cryptography, one-way function, one-way shell core function