+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include "pcsc_cr.h"
+
+unsigned char chal[] = {
+0x0f,0x65,0xd1,0x3a,0xfe,0xcb,0xc4,0xb9,0x52,0xb1,0x60,0xcf,0xe8,0x55,0x6a,0xdd,0xfb,0xef,0xf6,0x55,0x83,0x4c,0x8d,0xea,0x38,0xea,0x3b,0x26,0xf7,0x0a,0xe8,0x0d,0x31,0x38,0xee,0x16,0x5d,0xab,0x8b,0x7f,0xf0,0x1b,0xe3,0xbe,0xd8,0x4b,0x6e,0x44,0x42,0x8d,0x0f,0xc1,0x3b,0x23,0xea,0xfe,0xc0,0x68,0xc1,0x0f,0x60,0x6c,0xf4};
+
+static void usage(const char const *cmd)
+{
+ fprintf(stderr, "usage: %s [-o backend:name=value] ...\n", cmd);
+}
+
+int main(int argc, char *argv[])
+{
+ unsigned char rbuf[20];
+ int rsize = sizeof(rbuf);
+ int i;
+ long rc;
+ int c;
+
+ while ((c = getopt(argc, argv, "ho:")) != -1) switch (c) {
+ case 'h':
+ usage(argv[0]);
+ exit(0);
+ case 'o':
+ if (pcsc_option(optarg)) {
+ fprintf(stderr, "Option \"%s\" bad\n", optarg);
+ exit(1);
+ }
+ break;
+ default:
+ usage(argv[0]);
+ exit(1);
+ }
+
+ memset(rbuf, 0xFE, sizeof(rbuf));
+ rc = pcsc_cr(chal, sizeof(chal), rbuf, &rsize);
+ printf("rc=%ld (%s) rsize=%d:", rc, pcsc_errstr(rc), rsize);
+ for (i = 0; i < rsize; i++) printf(" %02x", rbuf[i]);
+ printf("\n");
+ return rc;
+}