17 lines
861 B
Plaintext
17 lines
861 B
Plaintext
Public Shared Function TripleDESdecrypt(ByVal b As String, ByVal c As String, ByVal d As Boolean) As String
|
|
Dim keyArray As Byte()
|
|
Dim toEncryptArray As Byte() = Convert.FromBase64String(b)
|
|
If d Then
|
|
Dim hashmd5 = New MD5CryptoServiceProvider()
|
|
keyArray = hashmd5.ComputeHash(UTF8Encoding.UTF8.GetBytes(c))
|
|
Else
|
|
keyArray = UTF8Encoding.UTF8.GetBytes(c)
|
|
End If
|
|
Dim tdes = 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 |