How to Encode Strings to Base64 URL-Safe in C#?

Base64 URL security encoding in the c# detailed explanation

Base64 URL security encoding is a commonly used URL encoding technology, which avoids the need for the character's %-encoding. This article will explore how to implement this encoding in C#.

JavaScript method comparison

Java can easily implement URL security coding using the CODEC library. C# can also adopt a similar method.

Base64 conversion

The following code demonstration how to convert the string to base64:

However, this method will add a double -class number to the end of the coding result (=).

byte[] toEncodeAsBytes = System.Text.ASCIIEncoding.ASCII.GetBytes("StringToEncode");
string returnValue = System.Convert.ToBase64String(toEncodeAsBytes);

<现> Implement URL security coding

In order to achieve URL security coding, we need to perform the following steps:

<替> Replace the character:

replace the '' to '-', and replace '/' to '_'.

<除> Remove filling:
1. Delete any filling character '='.
The following code has been implemented:
2. Please note that <定> is defined as an array containing '=' characters.

<码> Decoding process

char[] padding = { '=' };
string returnValue = System.Convert.ToBase64String(toEncodeAsBytes)
        .TrimEnd(padding).Replace('+', '-').Replace('/', '_');

The decoding process is as follows:

padding

Compared with the Java Codec library

You need to further verify whether this method is consistent with Java's "Common Codec Library" method. This will be an interesting test direction.

The above is the detailed content of How to Encode Strings to Base64 URL-Safe in C#?. For more information, please follow other related articles on the PHP Chinese website!