【摘要】 该文以RSA密码系统为实例介绍了公钥密码体制的基本原理和破译,研究了神经网络在RSA密码体系中的应用,并给出了用BP神经网络来对公钥密码进行破译的基本结构及其学习算法,分析了用BP神经网络破译RSA密码的破译原理,给出了改进的BP网络模型及其学习算法,进行了仿真试验,在此基础上对构建的BP神经网络破译器的的结构进行了进一步的优化和改进,并给出了改进后的学习算法,最后对设计方法阐述了改进的必要性,试验表明方法的有效性和可行性。更多还原

【Abstract】 In this article the basic principle of the public key cryptograph is introduced taking the RSA cryptosystem as an example and the application of neural network in the RSA crptosystem is researched.Then the basic structure and learning algorithm of BP neural network are outlined and researched in RSA cryptosystem.Then we modify the BP neural network model and their learning algorithm .Finally we designed the modified BP neural network decoder structure and give some experimental results and illustrated the importance of this improvement.The results show that the method is effective and feasible.更多还原