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Chinese Standard: GB/T 17710-2008

Information technology—Security technique—Check character systems

IDT  ISO/IEC 7064:2003

全国信息技术标准化技术委员会

1.1 本标准规定了一组校验字符系统,它可以防止在复制或键入数据时产生的串的错误。串的长度可以是固定的或是可变的,包括以下字符集中的字符:
a) 数字 (10个数字:0~9);
b) 字母 (26个字母:A~Z );
c) 字母数字(字母和数字)。

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