Private-Key Error Correcting Cryptography Based on QC-LDPC Codes for Telemetry System

摘要：

　　Aiming at the security and reliability of data transmission in a wireless telemetry system, a new error correcting cryptography algorithm is proposed in this paper.The novel algorithm employs quasi-cyclic low-density parity-check (QCLDPC) codes for simultaneous encryption and channel encoding, which is different from the traditional concatenated systems where encryption and channel encoding perform serially.Thus the proposed cryptosystem exhibits attracting characteristics when it is applied to a telemetry system.The parameters are obtained according to the cryptanalysis and the corresponding key size is estimated from the compact description of the quasi-cyclic matrices.The analysis shows that the proposed error correcting cryptosystem with lower-complexity is more secure than the traditional concatenated system at a price of larger key size which is still acceptable for implementation.

关键词： Error correcting cryptography Telemetry QC-LDPC code Private-key Security Key size

作者: Jinrong Zhang Ling Wu Shengli Liu Junfeng Wang

作者单位: Beijing Institute of Tracking and Telecommunications Technology, Beijing 100094, China

会议类型: 国际会议

会议名称: The 27th Conference of Spacecraft TT&C Technology in China(第27届中国飞行器测控学术会议)

会议地点: 广州

会议语种:英文

页码: 241-251

在线出版日期: 2014-11-09（万方平台首次上网日期，不代表论文的发表时间）