Encrypt & Decrypt

Public Function Encrypt1(ByVal toEncrypt As String, ByVal key As String, ByVal useHashing As Boolean) As String
Dim keyArray As Byte()
Dim toEncryptArray As Byte() = UTF8Encoding.UTF8.GetBytes(toEncrypt)

If useHashing = True Then
Dim hashmd5 As New MD5CryptoServiceProvider()
keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key))
Else
keyArray = UTF8Encoding.UTF8.GetBytes(key)
End If

Dim tdes As New TripleDESCryptoServiceProvider()
tdes.Key = keyArray
tdes.Mode = CipherMode.ECB
tdes.Padding = PaddingMode.PKCS7

Dim cTransform As ICryptoTransform = tdes.CreateEncryptor()
Dim resultArray As Byte() = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length)

Return (Convert.ToBase64String(resultArray, 0, resultArray.Length))
End Function

Public Function Decrypt1(ByVal toDecrypt As String, ByVal key As String, ByVal useHashing As Boolean) As String
Dim keyArray As Byte()
Dim toEncryptArray As Byte() = Convert.FromBase64String(toDecrypt)

If useHashing = True Then
Dim hashmd5 As New MD5CryptoServiceProvider()
keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(key))
Else
keyArray = UTF8Encoding.UTF8.GetBytes(key)
End If

Dim tdes As New TripleDESCryptoServiceProvider()
tdes.Key = keyArray
tdes.Mode = CipherMode.ECB
tdes.Padding = PaddingMode.PKCS7

Dim cTransform As ICryptoTransform = tdes.CreateDecryptor()
Dim resultArray As Byte() = cTransform.TransformFinalBlock(toEncryptArray, 0, toEncryptArray.Length)

Return UTF8Encoding.UTF8.GetString(resultArray)
End Function