一個 N-D 保密方法

Abstract

本文中，我們將介紹一個能把明文轉成未定性密文的保密系統，其未定性 主要因為我們用了未定性數字表示法（ＮＮＲ），並與定性數字表示法（ ＤＮＲ）合併，而提出一個－Ｄ的保密系統。這個保密系統將工作在整數 域，換句話說，此系統的輸入與輸出都是數。〞一對多〞是其未定性的一 個重要特性，所以要破其密文；猜其明文，變得更加困。也更增強其安全 度。 In this paper, we proposed a new cryptosystem that can transform one plaintext to different ciphertexts nondeterministicly at different times. The propertie sof nondetermination come from the usage of nondeterministic number representa tion(NNR)system. Combined with a deterministic number representation(DNR)syst em, wepropose an N-D cryptoscheme. This cryptoscheme works on the scalar inte gerdomain, that is , both input and output are scalar integers. "One to many" ismost important property of nondetermination, makes the guess of plaintext m oredifficult, hence enforces the security.