华中科技大学学报（自然科学版）Issue(8)：74-78,5.DOI:10.13245/j.hust.140815
用于有损信息压缩的可加密 Block-LDGM 码设计
Design of encrypting block-LDGM codes for lossy source compression
摘要
Abstract
An encrypting block low density generator matrix (Block-LDGM ) code was proposed in this paper .The generator matrix of the encrypting Block-LDGM code was composed of a group of permu-tation submatrices ,corresponded to quadratic permutation polynomials (QPPs) .The coefficients of the QPPs ,which were served as secret keys ,were used to randomize the permutation submatrices and encrypt the codes .Based on the multi-edge type bipartite graph of the Block-LDGM code ,the corre-sponding multi-edge type belief propagation (M TBP) algorithm with a filter-damping decimation was developed for the source compression .Simulation results show that the proposed scheme achieves close to state-of-the-art performance with a high level security .关键词
有损信息压缩/低密度生成矩阵码/二次交织多项式/密钥/传播算法Key words
lossy source compression/low density generator matrix (LDGM ) codes/quadratic per-mutation polynomials (QPPs)/secret keys/belief propagation (BP)分类
信息技术与安全科学引用本文复制引用
管武,梁利平,吴凯..用于有损信息压缩的可加密 Block-LDGM 码设计[J].华中科技大学学报（自然科学版）,2014,(8):74-78,5.基金项目
国家科技重大专项基金资助项目（2013ZX03003015）；国家自然科学基金资助项目（61102073）． （）
