/// <summary>
/// Process ERASE instruction (CC3)
/// <para>
/// C-APDU: <code>00 0E {offset} {Lc} {length} </code>
/// </para>
/// <list type="table">
/// <item>
/// <term>offset</term>
/// <description>offset of first word of the file coded by P1 P2 (WORDS) to be erased.</description>
/// </item>
/// <item>
/// <term>length</term>
/// <description>number of words to be erased.</description>
/// </item>
/// </list>
/// </summary>
/// <param name="apdu"></param>
/// <returns></returns>
private IFakeCardFeedback ProcessErase(CommandAPDU apdu)
{
// TODO: check ==> security of current EF
byte[] apduBuffer = apdu.GetBuffer();
apdu.SetIncomingAndReceive();
// Check if Lc ==2
short lc = APDUHelpers.getIncomingLength(apdu);
if (lc != 2)
{
ISOException.throwIt(JavaCard.ISO7816.SW_WRONG_LENGTH);
}
short offset = Util.getShort(apduBuffer, JavaCard.ISO7816.OFFSET_P1); // in WORDS
short udcOffset = APDUHelpers.getOffsetCdata(apdu);
short length = Util.getShort(apduBuffer, udcOffset); // in WORDS
VerifyOutOfFile(offset, length);
_currentEF.Erase(offset, length);
return(FakeCardFeedback.FromSuccess(unchecked ((short)0x9000)));
}
