/// <summary>
/// Validate Message Mac.
/// Of course it needs a special MAC calculation algorithm that designed by
/// your system.
/// </summary>
/// <param name="isoMacGenerator"></param>
/// <returns></returns>
public bool ValidateMac(ISOMacGenerator isoMacGenerator)
{
if (!FieldExits(FIELDS.F64_MAC) || GetField(FIELDS.F64_MAC).Length == 0)
{
return(false);
}
byte[] mBody = new byte[GetBody().Length - 8];
GetBody().CopyTo(mBody, GetBody().Length - 8);
byte[] oMac = Arrays.CopyOf(GetField(FIELDS.F64_MAC), 8);
byte[] vMac = isoMacGenerator.Generate(mBody);
return(oMac.SequenceEqual(vMac));
}
public DataElement <T> GenerateMac(ISOMacGenerator generator)
{
if (generator != null)
{
byte[] mac = generator.Generate(BuildBuffer(true));
if (mac != null)
{
SetField(FIELDS.F64_MAC, mac);
}
else
{
throw new ISOException("MAC is null");
}
}
return(this);
}
