Specified key is not a valid size for this algorithm.

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I use This Code To Encrypt tryed with the Key value as "abc" also in int valves like "123" so and so but geting dis error pls Help

My Error is "Specified key is not a valid size for this algorithm."

C#

public static string Encrypt(string input, string key)
      {
          byte[] inputArray = UTF8Encoding.UTF8.GetBytes(input);
          TripleDESCryptoServiceProvider tripleDES = new TripleDESCryptoServiceProvider();
          tripleDES.Key = UTF8Encoding.UTF8.GetBytes(key);
          tripleDES.Mode = CipherMode.ECB;
          tripleDES.Padding = PaddingMode.PKCS7;
          ICryptoTransform cTransform = tripleDES.CreateEncryptor();
          byte[] resultArray = cTransform.TransformFinalBlock(inputArray, 0, inputArray.Length);
          tripleDES.Clear();
          return Convert.ToBase64String(resultArray, 0, resultArray.Length);
      }

Help Pls

Posted 3-Jul-13 21:19pm

usha C

Updated 3-Jul-13 21:21pm

v2

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3 solutions

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Richard MacCutchan · Accepted Answer · 2013-07-03T21:25:00

Solution 1

See http://msdn.microsoft.com/en-us/library/system.security.cryptography.tripledescryptoserviceprovider.generatekey.aspx[^].

Posted 3-Jul-13 21:25pm

Richard MacCutchan

Comments

usha C 4-Jul-13 3:31am

public override void GenerateKey()

How to use dis method in this code i dont have idea pls help me

Richard MacCutchan 4-Jul-13 4:30am

I would suggest by reading the documentation and trying some sample code.

praks_1 · Accepted Answer · 2013-07-03T21:39:00

Solution 2

Hi,

see this :
http://msdn.microsoft.com/en-us/library/system.security.cryptography.tripledescryptoserviceprovider.aspx[^]

Posted 3-Jul-13 21:39pm

praks_1

Comments

usha C 4-Jul-13 3:56am

Am geting dis error if i used my code in that method

"The method or operation is not implemented."

pls do explain me clearly Thank You...,

praks_1 4-Jul-13 4:13am

post ur code

usha C · Accepted Answer · 2013-07-03T22:36:00

C#

public static byte[] EncryptTextToMemory(string Data, byte[] Key, byte[] IV)
        {
            
                // Create a MemoryStream.
                MemoryStream mStream = new MemoryStream();

                // Create a CryptoStream using the MemoryStream  
                // and the passed key and initialization vector (IV).
                CryptoStream cStream = new CryptoStream(mStream,
                    new TripleDESCryptoServiceProvider().CreateEncryptor(Key, IV),
                    CryptoStreamMode.Write);

                // Convert the passed string to a byte array. 
                byte[] toEncrypt = new ASCIIEncoding().GetBytes(Data);

                // Write the byte array to the crypto stream and flush it.
                cStream.Write(toEncrypt, 0, toEncrypt.Length);
                cStream.FlushFinalBlock();

                // Get an array of bytes from the  
                // MemoryStream that holds the  
                // encrypted data. 
                byte[] ret = mStream.ToArray();

                // Close the streams.
                cStream.Close();
                mStream.Close();

                // Return the encrypted buffer. 
                return ret;
           
            

        }

Here is my code