added log message

			// a) Check the checksum M_IFD of the cryptogram E_IFD.

			v_computedMacIfd := f_cryptographicChecksum(vc_simu.kMac, v_encryptedIfd);

			if(not match(v_computedMacIfd, v_macIfd)) {

			    log("CHECKSUM ERROR");

				//TODO

				return ''O;

			}