都是密码但cipher和code有什么区别? episode artwork

EPISODE · Nov 19, 2019 · 1 MIN

都是密码但cipher和code有什么区别?

from 英语小小孩 · host 英语小小孩

cipher和code都是密码的意思。这个密码不是你的手机密码或者网站登录密码,而是把一段信息加密,然后传给另外一个人,接收者解密然后阅读。在这里密码的作用是防止第三者偷看信息。cipher的意思就是使用正常的字母字符,但是改变它们的使用顺序,从而让其他人即使看到这些字母和字符,也拼写不出正确的单词。凯撒密码就是这么做的。例如正常字母表顺序是abcdefg,但是约定好用d代表a,e代表b,f代表c,依此类推。这样单词cab就变成了fde。看到fde这个单词的人当然不明白这是什么意思。code就是使用特殊形状来代表字母,从而隐藏本来的单词。例如用三角形代表字母h。

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都是密码但cipher和code有什么区别?

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