--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/simtool/chvext.c	Sat Feb 13 00:01:38 2021 +0000
@@ -0,0 +1,33 @@
+/*
+ * This module implements some commands for extended (non-standard)
+ * CHV-like operations which some cards use for ADM access control.
+ */
+
+#include <sys/types.h>
+#include <stdio.h>
+#include "simresp.h"
+
+cmd_verify_ext(argc, argv)
+	char **argv;
+{
+	u_char cmd[13];
+	int rc;
+
+	/* VERIFY CHV command APDU */
+	cmd[0] = 0xA0;
+	cmd[1] = 0x20;
+	cmd[2] = 0x00;
+	cmd[3] = strtoul(argv[1], 0, 0);
+	cmd[4] = 8;
+	rc = encode_pin_entry(argv[2], cmd + 5);
+	if (rc < 0)
+		return(rc);
+	rc = apdu_exchange(cmd, 13);
+	if (rc < 0)
+		return(rc);
+	if (sim_resp_sw != 0x9000) {
+		fprintf(stderr, "bad SW response: %04X\n", sim_resp_sw);
+		return(-1);
+	}
+	return(0);
+}