得到錯誤而解密串

在解密我正在一個錯誤和加密的字符串：得到錯誤而解密串

5duOH + Tlg5deIrWZiHoNaQ == wVxXSl9pFu6A8h14/nLdyBkDzO4xmec7PQ0cB7MHjCDqhSRum3C7I1OfqL1rEWbNonU/ayCaJS18zV7ivQQU7A == MBJzKMrrrbmc2/vBZSPDkQ == I09Kj25UO + LcmRzgoqTT2g == + Fkm9VCGplEK6eEyHyEtuEodKSbckC07M2FShu2ukCg =

錯誤如下：

輸入不是有效的Base-64的字符串作爲它ç包含非基本64字符，多於兩個填充字符或填充字符中的非法字符。

我的加密的代碼是：公共字符串EncryptQueryString（串的inputText，串鍵，串鹽） { 字節[]明文= Encoding.UTF8.GetBytes（inputText的）;

using (RijndaelManaged rijndaelCipher = new RijndaelManaged()) 
    { 
     PasswordDeriveBytes secretKey = new PasswordDeriveBytes(Encoding.ASCII.GetBytes(key), Encoding.ASCII.GetBytes(salt)); 
     using (ICryptoTransform encryptor = rijndaelCipher.CreateEncryptor(secretKey.GetBytes(32), secretKey.GetBytes(16))) 
     using (MemoryStream memoryStream = new MemoryStream()) 
     using (CryptoStream cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write)) 
     { 
      cryptoStream.Write(plainText, 0, plainText.Length); 
      cryptoStream.FlushFinalBlock(); 
      string base64 = Convert.ToBase64String(memoryStream.ToArray()); 

      // Generate a string that won't get screwed up when passed as a query string. 
      string urlEncoded = HttpUtility.UrlEncode(base64); 
      return urlEncoded; 
     } 
    } 
}

解密：

public string DecryptQueryString(string inputText, string key, string salt) 
{ 
    byte[] encryptedData = Convert.FromBase64String(inputText); 
    PasswordDeriveBytes secretKey = new PasswordDeriveBytes(Encoding.ASCII.GetBytes(key), Encoding.ASCII.GetBytes(salt)); 

    using (RijndaelManaged rijndaelCipher = new RijndaelManaged()) 
    using (ICryptoTransform decryptor = rijndaelCipher.CreateDecryptor(secretKey.GetBytes(32), secretKey.GetBytes(16))) 
    using (MemoryStream memoryStream = new MemoryStream(encryptedData)) 
    using (CryptoStream cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read)) 
    { 
     byte[] plainText = new byte[encryptedData.Length]; 
     cryptoStream.Read(plainText, 0, plainText.Length); 
     string utf8 = Encoding.UTF8.GetString(plainText); 
     return utf8; 
    } 
}

來源

2016-12-21 rahul kadachira

錯誤似乎是你雖然這是一個代碼編寫服務 –

什麼是錯誤？你是如何加密字符串的？你怎麼試圖解密字符串？認真 - 我們需要更多的信息！ –

@AlfieGoodacre一個心靈的代碼寫作服務！ –

Base64的填充由=或==，因此它看起來像，其中以某種方式所附在一起的多個Base64的字符串。你必須找到他們最初結束的地方，把它們分開，然後再試一次。

請注意，Base64字符串不會總是有填充，只有當需要時，所以甚至可能需要在你看不到的地方中斷。

來源

2016-12-21 15:15:22

得到錯誤而解密串

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