【摘要】 根据类Hénon混沌系统对初始条件和参数的敏感性以及迭代过程的伪随机性,提出了一种基于类Hénon混沌系统的密钥序列生成算法.该算法将参数和初值带入混沌映射,经过迭代产生任意长度的混沌序列,并将其进行量化,量化后得到的密钥序列具有良好的统计特性.另外,还通过计算机实验,对所生成的混沌序列进行了分析.结果表明,这种算法生成的混沌序列具有随机性好,分布均匀的特点,且有较大的密钥空间,可以有效地保障明文的安全.更多还原

【Abstract】 Because of its sensitivity to initial conditions and parameters along with pseudo-random of the iteration sequence of Hénon-like,it presents a key sequence algorithm based on Hénon-like chaotic system.The algorithm brings parameter and initial values into chaotic map and produces arbitrary length chaotic sequences by iteration,it quantifies them to gain key sequence that has good statistic character.The paper also analyzed the chaotic sequence by computer experiments.The results show that this chaotic sequence is well-proportioned and has good randomicity,meanwhile it has larger key space and can guarantee the security of plaintext effectively. of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China)Abstract:The Ce5.9Ga0.1MoO15-δ has been synthesized by sol-gel and solid state method.The structure was characterized by differential thermal/thermogravimetry(DTA/TG),X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS) and conductivity was investigated by AC impedance spectroscopy.The results showed that the concentration of oxygen vacancy increased with the increasing content of Ga which resulted in the increase of ionic conductivity.The conductivity is 6.5×10-3 S/cm for the sample prepared by sol-gel method,which is higher than that synthesized by solid state(1.8×10-3 S/cm) method at 800℃.更多还原