small add

client/emv/cmdemv.c

@@ -1666,6 +1666,7 @@ int CmdEMVRoca(const char *cmd) {
 		                "\x01\x92\xad\xbb\x8e\x11\xc8\x7c\xad\x60\xcd\xef\x00\x37\xce\x99"\
 						"\x27\x83\x30\xd3\xf4\x71\xa2\x53\x8f\xa6\x67\x80\x2e\xd2\xa3\xc4"\
 						"\x4a\x8b\x7d\xea\x82\x6e\x88\x8d\x0a\xa3\x41\xfd\x66\x4f\x7f\xa7";
+		PrintAndLogEx(INFO, "DEMO ICC pk modulus: %s", sprint_hex_inrow(key, 64));
 		if (emv_rocacheck(key, 64)) 
 				PrintAndLogEx(INFO, "DEMO ICC pk is vulnerable by roca.");