为什么有那么多站点禁止在密码中使用非字母数字字符? [英] Why do so many sites disallow the use of non-alphanumeric characters in passwords?

问题描述

在进行注册时，许多站点都不允许在密码中使用符号.从可用性的角度来看，这使我无所适从，因为我在所有密码中都包含多个符号，并且作为不时处理Web身份验证的程序员，我不知道为什么不允许这样做.我想念什么吗?他们担心SQL注入吗?不想处理转义字符?还是有些带有非拉丁字母字符的东西会弄乱东西?

When going through registration, a lot of sites will disallow the use of symbols in passwords. This drives me up the wall from a usability perspective since I include multiple symbols in all my passwords, and as a programmer that deals with web authentication from time to time, I can't figure out why it wouldn't be allowed. Am I missing something? Are they worried about SQL injection? Don't want to deal with escaping characters? Or is there something with non-Latin-alphabet characters that can mess things up?

类似的问题，关于限制长度的网站此处.

Similar question, about sites that restrict length here.

推荐答案

1. 懒惰，2.使用不支持auth字符的旧系统

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