| 释义 |
code system 编码系统 In cryptography,a cryptographic system in which cryptographic equivalents(usually called code groups) typically consisting of letters, digits or both in meaningless combinations are substituted for plaintextelements which may be words, phrases or sentences. 密码学中的一种密码系统,将由字、短语和句子构成的明文代以字母、数字或两种兼而有之的无意义组合。 |