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更新文档,修正流密码基本思想中的公式格式,增加“有记忆元件”说明
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W1ndys committed Jan 7, 2025
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## 流密码的基本概念 P13

流密码的基本思想是:利用秘钥 $$ k $$,产生一个密钥流 $$ z = z_0 z_1 z_2 \ldots $$,并使用如下规则对明文串 $$ x = x_0 x_1 x_2 \ldots $$ 加密:$$ y = y_0 y_1 y_2 \ldots = E_{z_0}(x_0) E_{z_1}(x_1) E_{z_2}(x_2) \ldots $$
流密码的基本思想是:利用秘钥 $$ k $$,产生一个密钥流 $$ `z = z_0 z_1 z_2 \ldots` $$,并使用如下规则对明文串 $$ `x = x_0 x_1 x_2 \ldots` $$ 加密:$$ `y = y_0 y_1 y_2 \ldots = E_{z_0}(x_0) E_{z_1}(x_1) E_{z_2}(x_2) \ldots` $$
有记忆元件

## 流密码的基本概念 P13

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