关键词: 公钥密码； 单向壳核函数； 可编程逻辑器件

Abstract:

In view of the contradiction between one way and trapdoor occured on constructing public key cryptography, the author introduced a new type of public key cryptography that is oneway shell core function. According to the designing ideas and structural characteristics of programmable logic device (PLD), the paper presents a scheme of oneway shell core function and shows that its security is equal to that of onetime pad. Compared 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 shell core function； programmable logic device