文件名称:数据加密传输
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：某个公司采用公用电话传递数据，数据是四位的整数，在传递过程中是加密的，加密规则如下：
每位数字都加上5,然后用和除以10的余数代替该数字，再将第一位和第四位交换，第二位和第三位交换。
-: a company using a public phone data transfer, data is four integer, in the course of transmission is encrypted, encryption rules are as follows : Each figures plus five, and then divided by 10 to replace the remainder of the figures, then the first one and fourth exchange, the second and third places exchange.
每位数字都加上5,然后用和除以10的余数代替该数字，再将第一位和第四位交换，第二位和第三位交换。
-: a company using a public phone data transfer, data is four integer, in the course of transmission is encrypted, encryption rules are as follows : Each figures plus five, and then divided by 10 to replace the remainder of the figures, then the first one and fourth exchange, the second and third places exchange.
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数据加密.doc