C＃：Base64编码 [英] C#: Base64 encoding

问题描述

任何人都可以，请让我知道我在做这个代码的错误？此代码是用C＃.NET。我需要写一个算法编码使用C＃.NET使用Base64格式的字符串，然后使用PHP与BASE64_DECODE解码（）。请参阅下面的SNIPPIT：

  System.Security.Cryptography.RijndaelManaged rijndaelCipher =新System.Security.Cryptography.RijndaelManaged（）; 
 rijndaelCipher.Mode = System.Security.Cryptography.CipherMode.CBC; 
 rijndaelCipher.Padding = System.Security.Cryptography.PaddingMode.Zeros; 
 rijndaelCipher.KeySize = 256; 
 rijndaelCipher.BlockSize = 128; 
 
字节[] = pwdBytes System.Text.Encoding.UTF8.GetBytes（_key）; 
字节[] = keyBytes新的字节[16]; 
 
 INT LEN = pwdBytes.Length; 
如果（LEN> keyBytes.Length）LEN = keyBytes.Length; 
 
 System.Array.Copy（pwdBytes，keyBytes，LEN）; 
 
 rijndaelCipher.Key = keyBytes; 
 rijndaelCipher.IV = keyBytes; 
 
 System.Security.Cryptography.ICryptoTransform变换= rijndaelCipher.CreateEncryptor（）; 
 
字节[] =明文Encoding.UTF8.GetBytes（unencryptedString）; 
字节[] = cipherBytes transform.TransformFinalBlock（明文，0，plainText.Length）; 
 
返回Convert.ToBase64String（cipherBytes）; 
  

解决方案

我觉得你的代码示例是做加密并且希望编码。
在C＃与Based64编码字符串，它应该是这样的：

 的静态公共字符串EncodeTo64（字符串toEncode ）
 {
字节[] = toEncodeAsBytes System.Text.ASCIIEncoding.ASCII.GetBytes（toEncode）; 
串的returnValue = System.Convert.ToBase64String（toEncodeAsBytes）; 
回报率的returnValue; 
} 
  

和PHP的应该是这样的：

 < PHP 
 $海峡='VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw =='; 
回声BASE64_DECODE（$海峡）; 
>？; 
  

Can anyone please let me know where I made a mistake in this code? This code is written in C#.NET. I need to write an algorithm for encoding a string using base64 format using C#.NET, and then decoded with base64_decode() using PHP. Please see the snippit below:

System.Security.Cryptography.RijndaelManaged rijndaelCipher = new System.Security.Cryptography.RijndaelManaged();
rijndaelCipher.Mode = System.Security.Cryptography.CipherMode.CBC;
rijndaelCipher.Padding = System.Security.Cryptography.PaddingMode.Zeros;
rijndaelCipher.KeySize = 256;
rijndaelCipher.BlockSize = 128;

byte[] pwdBytes = System.Text.Encoding.UTF8.GetBytes(_key);
byte[] keyBytes = new byte[16];

int len = pwdBytes.Length;
if (len > keyBytes.Length) len = keyBytes.Length;

System.Array.Copy(pwdBytes, keyBytes, len);

rijndaelCipher.Key = keyBytes;
rijndaelCipher.IV = keyBytes;

System.Security.Cryptography.ICryptoTransform transform = rijndaelCipher.CreateEncryptor();

byte[] plainText = Encoding.UTF8.GetBytes(unencryptedString);
byte[] cipherBytes = transform.TransformFinalBlock(plainText, 0, plainText.Length);

return Convert.ToBase64String(cipherBytes);

解决方案

I think your code sample is doing "encryption", and you want "encoding". For encoding a string with Based64 in C#, it should look like this:

 static public string EncodeTo64(string toEncode)
    {
        byte[] toEncodeAsBytes = System.Text.ASCIIEncoding.ASCII.GetBytes(toEncode);
        string returnValue = System.Convert.ToBase64String(toEncodeAsBytes);
        return returnValue;
    }

And the PHP should look like this:

 <?php
  $str = 'VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw==';
  echo base64_decode($str);
 ?>

这篇关于C＃：Base64编码的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！