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这里所谈的是几年前一次破译分析实验中所采用的方法。那次实验,把破译密报中常用的重迭法用于破开有重复密码段出现的数字密话,是其主要实验项目之一。语音编码是针对∑压扩式增量调制,加密运算是语音编码与密码序列模二加。利用Kappa试验之类的方法发现若干段由相同密码序列加密信码序列,把它们对准重迭排列起来,每个纵行都是一种单表代替密码,通过求解出各纵行的密码码组,就能恢复整个密码段。在语音编码加密
What we are talking about here is the method used in a deciphering analysis experiment a few years ago. That experiment, one of the main experimental items, was the use of overlapping methods commonly used in deciphering bombs to break up digital ciphers that have duplicate ciphers. Speech coding is for Σ-compression incremental modulation, encryption algorithm is the voice code and password sequence modulo plus. Using Kappa test and the like, it is found that several segments are encrypted by the same cryptographic sequence and are aligned and overlapped. Each longitudinal row is a single table instead of a password. By solving the password of each longitudinal line Group, you can restore the entire password segment. Encryption in voice coding