Design of LDPC-based Error Correcting Cipher

摘要：

In this paper, we propose a LDPC error correcting cipher which joints the Advanced Encryption Standard (AES) and LDPC code together. The LDPC error correcting cipher which is based on the wide trail strategy is a six round block cipher that encrypts 256 bit plaintexts using secret key to produce 512 bit ciphertexts, and the key is composed of 128 bit AES secret key and LDPC generator matrix. By using the LDPC generator matrix with high performance in diffusion property, we made the LDPC error correcting cipher as secure as the Advanced Encryption Standard (AES) against linear, differential attacks in fewer rounds. Even the square attack has no effect on attacking the cipher. Lastly, the process of encrypting/decrypting is implemented, and the security and error correction capacity is analyzed also.

关键词： AES LDPC channel coding error correcting cipher.

作者: Qing Su Yang Xiao

作者单位: Institute of Information Science,Beijing Jiaotong University Beijing 100044,P.R.China

会议类型: 国际会议

会议名称: The IET 2nd International Conference on Wireless,Mobile & Multimedia Networks(第二届IET国际无线移动多媒体网络会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）