Based on the entropy criterion and n-dimensional uniform distribution of nonlinear digital filter （NDF）, we present an efficient NDF-based pseudorandom bit generator （NDF-PRBG） for chaotic stream ciphers. The cryp...Based on the entropy criterion and n-dimensional uniform distribution of nonlinear digital filter （NDF）, we present an efficient NDF-based pseudorandom bit generator （NDF-PRBG） for chaotic stream ciphers. The cryptographic properties of the proposed NDF-PRBG are analysed, and some experiments are made. The results show that it has desirable cryptographic properties, and can be used to construct secure stream ciphers with high speed.展开更多
基金Supported by the National Natural Science Foundation of China under Grant No 60572027, the Programme for New Century Excellent Talents in University of China under Grant No NCET-05-0794, the Basic Research Foundation of Sichuan Province under Grant No 2006J13-110, and the 2006 Doctoral Innovation Fund of Southwest Jiaotong University.
文摘Based on the entropy criterion and n-dimensional uniform distribution of nonlinear digital filter （NDF）, we present an efficient NDF-based pseudorandom bit generator （NDF-PRBG） for chaotic stream ciphers. The cryptographic properties of the proposed NDF-PRBG are analysed, and some experiments are made. The results show that it has desirable cryptographic properties, and can be used to construct secure stream ciphers with high speed.
