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Message: [QUOTE="wesbland, post: 9631693"] From my understanding, when a string is stored in VB.NET and you look at it in the debugger, it has a quote on both sides to signify that it is a string as opposed to a char or int or whatever. I've got a simple program here (I actually found it on the web somewhere, but I'm looking through it) that doesn't seem to have that ending quote at when it gets down to the end. In this program it doesn't make much of a difference, but I've modified it a little and used it in another one where it needs to decompress the string after it decrypts it and not having that ending quote makes it crash. Can anyone tell me what's going on here that makes that quote go away. Also, I can't add anything to the end of the string when it comes out of the last decryptTextFromMemory. These two problems are probably related. Thanks ahead of time ----------------------------------------------------------------- Imports System.Security.Cryptography Imports System.Text Imports System.IO Module TripleDESCSPSample Sub Main() Try ' Create a new TripleDESCryptoServiceProvider object ' to generate a key and initialization vector (IV). Dim tDESalg As New TripleDESCryptoServiceProvider ' Create a string to encrypt. Dim sData As String = "Here is some data to encrypt." ' Encrypt the string to an in-memory buffer. Dim Data As Byte() = EncryptTextToMemory(sData, tDESalg.Key, tDESalg.IV) ' Decrypt the buffer back to a string. Dim Final As String = DecryptTextFromMemory(Data, tDESalg.Key, tDESalg.IV) ' Display the decrypted string to the console. Console.WriteLine(Final) Catch e As Exception Console.WriteLine(e.Message) End Try End Sub Function EncryptTextToMemory(ByVal Data As String, ByVal Key() As Byte, ByVal IV() As Byte) As Byte() Try ' Create a MemoryStream. Dim mStream As New MemoryStream ' Create a CryptoStream using the MemoryStream ' and the passed key and initialization vector (IV). Dim cStream As New CryptoStream(mStream, _ New TripleDESCryptoServiceProvider().CreateEncryptor(Key, IV), _ CryptoStreamMode.Write) ' Convert the passed string to a byte array. Dim toEncrypt As Byte() = 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. Dim ret As Byte() = mStream.ToArray() ' Close the streams. cStream.Close() mStream.Close() ' Return the encrypted buffer. Return ret Catch e As CryptographicException Console.WriteLine("A Cryptographic error occurred: {0}", e.Message) Return Nothing End Try End Function Function DecryptTextFromMemory(ByVal Data() As Byte, ByVal Key() As Byte, ByVal IV() As Byte) As String Try ' Create a new MemoryStream using the passed ' array of encrypted data. Dim msDecrypt As New MemoryStream(Data) ' Create a CryptoStream using the MemoryStream ' and the passed key and initialization vector (IV). Dim csDecrypt As New CryptoStream(msDecrypt, _ New TripleDESCryptoServiceProvider().CreateDecryptor(Key, IV), _ CryptoStreamMode.Read) ' Create buffer to hold the decrypted data. Dim fromEncrypt(Data.Length) As Byte ' Read the decrypted data out of the crypto stream ' and place it into the temporary buffer. csDecrypt.Read(fromEncrypt, 0, fromEncrypt.Length) 'Convert the buffer into a string and return it. Return New ASCIIEncoding().GetString(fromEncrypt) Catch e As CryptographicException Console.WriteLine("A Cryptographic error occurred: {0}", e.Message) Return Nothing End Try End Function End Module [/QUOTE]

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