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哈希算法(Hash Function)
将任意长度的二进制值串映射为固定长度的二进制值串,这个映射的规则就是哈希算法,而通过原始数据映射之后得到的二进制值串就是哈希值。 构成哈希算法的条件: 从哈希值不能反向推导出原始数据(所以哈希算法也叫单向哈希算法) 对输入数据非常敏感 ...
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