How to convert a byte into a string in vb.net?

Question

I have the function below ENCRYPT.

Public Function Encrypt(ByVal plainText As String) As Byte()


Dim key() As Byte = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24}
Dim iv() As Byte = {65, 110, 68, 26, 69, 178, 200, 219}


    ' Declare a UTF8Encoding object so we may use the GetByte 
    ' method to transform the plainText into a Byte array. 
    Dim utf8encoder As UTF8Encoding = New UTF8Encoding()
    Dim inputInBytes() As Byte = utf8encoder.GetBytes(plainText)

    ' Create a new TripleDES service provider 
    Dim tdesProvider As TripleDESCryptoServiceProvider = New TripleDESCryptoServiceProvider()

    ' The ICryptTransform interface uses the TripleDES 
    ' crypt provider along with encryption key and init vector 
    ' information 
    Dim cryptoTransform As ICryptoTransform = tdesProvider.CreateEncryptor(Me.key, Me.iv)

    ' All cryptographic functions need a stream to output the 
    ' encrypted information. Here we declare a memory stream 
    ' for this purpose. 
    Dim encryptedStream As MemoryStream = New MemoryStream()
    Dim cryptStream As CryptoStream = New CryptoStream(encryptedStream, cryptoTransform, CryptoStreamMode.Write)

    ' Write the encrypted information to the stream. Flush the information 
    ' when done to ensure everything is out of the buffer. 
    cryptStream.Write(inputInBytes, 0, inputInBytes.Length)
    cryptStream.FlushFinalBlock()
    encryptedStream.Position = 0

    ' Read the stream back into a Byte array and return it to the calling 
    ' method. 
    Dim result(encryptedStream.Length - 1) As Byte
    encryptedStream.Read(result, 0, encryptedStream.Length)
    cryptStream.Close()
    Return result
End Function

How do i see the byte value of the text?

aku · Accepted Answer · 2008-09-29 04:31:42Z

3

You can use Encoding class.

To convert array of bytes to a string you can use Encoding.GetString method

There is a special version for UTF8: UTF8Encoding.GetString

edited Sep 29, 2008 at 4:31

answered Sep 29, 2008 at 4:24

aku

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Comments

Tim Jarvis · Accepted Answer · 2008-09-29 04:54:44Z

2

Not 100% sure what you are asking, if you want to display your encrypted byte array as a string, then I would say, don't do that as your string won't be "string" data it will be encryted bytes and won't be displayable (generally)

if you are asking how can I see the byte values as a string...i.e. 129,45,24,67 etc then (assuming .net 3.5)

string.Join(",", byteArray.Select(b => b.ToString()).ToArray());

And if you are asking about converting back your de-crypted byte array, then you need to use the same encoding class that you used to create the original byte array, in your case the UTF8 encoding class.

answered Sep 29, 2008 at 4:54

Tim Jarvis

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