臺灣博碩士論文加值系統

在本文中，我們將介紹兩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使用了未定性數字表示法(NNR)，並與DWK合併，而提
出兩個 資料保密系統。 第一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整數。第二個保密系統輸入與輸出都是向量"
。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
得更加困難。也更增強其安全度。

In this paper, we proposed two new cryptosystem that can
transform oneplaintext to different ciphertexts
nondeterministicly at different times.The properties of
nondetermination come from the usage of nondeterministicnumber
representation (NNR) system. Combined with a DWK system, we
proposetwo cryptoschemes. Type (I) cryptoscheme works on the
scalar integer domain, that is,bothinput and output are scalar
integers. The input and output of type (II)cryptoscheme are both
vectors. "One to many" is most important propertyof
nondetermination, makes the guess of plaintext more difficult,
henceenforces the security.