標題: | An error-correcting stream cipher design with state-hopping architecture |
作者: | Yen, CH Wu, BF 電控工程研究所 Institute of Electrical and Control Engineering |
關鍵字: | cryptography;stream cipher;error correction;channel coding;encryption |
公開日期: | 1-一月-2005 |
摘要: | A new architecture of stream cipher based oil state-hopping shift registers and a pseudorandom vector generator (PRVG) is introduced. The proposed Stream cipher merges secrecy coding and channel coding into one processing Step. It could be either a pure cryptosystem or a secrecy-channel coding by demand. Considered as cryptography, the PRVG generates pseudo random vectors which are treated as keystreams setting Lip the encryption scheme. This is different from the general concept in stream ciphers, state-hopping shift registers do not generate a pseudo random sequence but act as substitutions on plaintexts. Viewed as channel coding. the state-hopping shift registers play as the ones in convolution code and the PRVG generates a sequence of pseudorandom vector to determine the Trellis diagram. If the system acts as a pure cryptosystem. the decoding scheme is exactly the inverse of the encryption Scheme. When the error-correcting ability is chosen. a modified sequential decoding is proposed. |
URI: | http://hdl.handle.net/11536/25198 |
ISSN: | 0253-3839 |
期刊: | JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS |
Volume: | 28 |
Issue: | 1 |
起始頁: | 9 |
結束頁: | 16 |
顯示於類別: | 期刊論文 |