/// <summary>
/// Decrypt method implementation
/// </summary>
public static string Decrypt(string encryptedText, string KeyString)
{
if (!encryptedText.StartsWith("0x01"))
{
throw new SharePointIdentityCryptographicException("Message Unknown ! or never never encrypted by SharePoint Indentity Service !");
}
encryptedText = encryptedText.Substring(4);
string cipherText = CipherUtility.Decrypt <AesManaged>(encryptedText, KeyString, "BABE");
return(cipherText);
}
