最少字符数的URL安全UUID [英] URL safe UUIDs in the smallest number of characters

问题描述

理想情况下，我想要类似example.com/resources/äFg4вNгё5这样的字符，最少数量的可见个字符，不要介意在通过HTTP传输它们之前必须对它们进行百分比编码.

Ideally I would want something like example.com/resources/äFg4вNгё5, minimum number of visible characters, never mind that they have to be percent encoded before transmitting them over HTTP.

您能说出一种方案，该方案将128b个UUID有效地编码为最少数量的可见字符，而结果中没有破坏URL的字符吗?

Can you tell a scheme which encodes 128b UUIDs into the least number of visible characters efficiently, without the results having characters which break URLs?

推荐答案

Base-64对此很有帮助.

Base-64 is good for this.

{098ef7bc-a96c-43a9-927a-912fc7471ba2}

可以被编码为

vPeOCWypqUOSepEvx0cbog

可以删除结尾处通常的等号，因为它们总是使字符串长度为4的倍数.您可以使用一些安全字符来代替+和/.您可以从以下两个选项中进行选择:- . _ ~

The usual equal-signs at the end could be dropped, as they always make the string-length a multiple of 4. And instead of + and /, you could use some safe characters. You can pick two from: - . _ ~

更多信息:

• RFC 4648
• 将UUID存储为base64字符串(Java)
• 引导至base64(用于URL)(C#)
• 简短的GUID (C#)

• RFC 4648
• Storing UUID as base64 String (Java)
• guid to base64, for URL (C#)
• Short GUID (C#)

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