Cipher Text to Be Transmitted and Cryptanalysis in Network Security
Tsang-Yean Lee, Huey-Ming Lee, Nai‐Wen Kuo · 2007
In this paper, we propose an encryption algorithm to encrypt plaintext to cipher text. We divide plaintext into numeric and non-numeric fields, also, we pack the numeric fields to produce packed numeric table and combine it with symbol fields to produce the new plaintext. We apply the basic computing operations, e.g., inserting dummy symbols, rotating, transposition, shifting and complement, in the proposed algorithm to encrypt plaintext to cipher text. The produced the cipher text which contains the plaintext, relative data and tables of encryption is transmitted to the receiver through the network. We also propose the cryptanalysis about these algorithms. It can be shown that the proposed algorithm is more secure in network security. Keywords—Data transmission; Cipher text, Plaintext, Network security environment. Lee and Lee (9) propose cipher text containing data and key to be transmitted in network security. In this study, we extend the method to separate the plaintext to numeric and non-numeric fields and use the encryption algorithm to produce cipher text. The cipher text contains the final symbol table, relative data, relative tables, control byte and the field of format code to design the different combination of tables and data. In order to decrypt, we should know the location of format code and different combination of format code. We also propose the cryptanalysis about these algorithms. We can show that the proposed processes are more difficult to do cryptanalysis.