请求包含字母、数字和标点符号的密码。
Require passwords to include letters, Numbers and punctuation.
第一步是列出所有需要输入的字符(是符号)包括数字和标点符号。
The first step is to list all the characters (not glyphs) needed for input, including digits and punctuation marks.
结果得到的编码文本将去掉空格、数字和标点符号，从而使它(略微)更加难于解码。
The resultant encoded text will be stripped of Spaces, Numbers and punctuation, making it (marginally) more difficult to decode.
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