Markov密码的(差分链)转移概率矩阵是双随机矩阵，其第二大（模）特征值对于确定Markov密码必要的迭代轮数有重要价值。该程序由本人编写，实现了求IDEA密码的缩小模型IDEA(8)的转移概率矩阵П0第二大（模）特征值-Markov password (differential chain) transition probability matrix is a doubly stochastic matrix, its second largest (modulus) eigenvalue is very necessary for the determination of the number of iterative rounds . This program written by myself has realized sloving the second-largest (modulus) eigenvalues of the transition probability matrix of miniature IDEA (8)