Javascript atob(str)在c#中的等效

本文关键字：atob str Javascript | 更新日期: 2023-09-27 18:17:48

我这样做了:

 byte[] data = Convert.FromBase64String(str);
 string decodedString = Encoding.UTF8.GetString(data);
 Console.WriteLine(decodedString);

但得到Unhandled Exception: System.FormatException: Invalid length for a Base-64 char array or string.

在javascript中使用atob(str)给我正确解码的str。

javascript控制台:

atob("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")
"{"iss":"https://identity-staging.ascend.xyz","aud":"https://identity-staging.ascend.xyz/resources","client_id":"6994A4A8-0E65-4FED-A82B-C684A0DD1758","scope":["openid","profile","sub.read","data.write","data.read","alg.execute"],"sub":"377c095b-783b-47e7-97b1-5aed98c038fc","amr":"external","auth_time":1407615507,"idp":"https://sts.windows.net/0840c760-6f7b-4556-b337-8c090e2d458d/","name":"pks@ascend.xyz","exp":1407836711,"nbf":1407833111}"

Javascript atob(str)在c#中的等效

    var str = "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";
    int mod4 = str.Length % 4;
    if (mod4 > 0)
    {
        str += new string('=', 4 - mod4);
    }

用c#解决

使用javascript的窗口。btoa函数在Javascript前端UI中将字符串编码为Base 64格式。在c#中解码相同的字符串(相当于javascript的窗口)。atob函数)请参见以下代码。

(很可能您正在尝试将数据(在大多数情况下是HTML，因为它需要btoa编码以确保最佳兼容性))发回控制器，或者您可能在服务器端创建自定义的基本基本身份验证过滤器) 

string base64Encoded = "YmFzZTY0IGVuY29kZWQgc3RyaW5n";
string base64Decoded;
byte[] data = System.Convert.FromBase64String(base64Encoded);
base64Decoded = System.Text.ASCIIEncoding.ASCII.GetString(data);
Console.WriteLine(base64Decoded)

您可以在https://dotnetfiddle.net/abxwSw

看到它的工作示例
相关文章：