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mifare-classic-format option: read keys from dump

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Dominik Heidler 2013-05-03 09:58:22 +02:00 committed by Dominik Heidler
parent 00e999dd52
commit cc36619f13
1 changed files with 30 additions and 4 deletions
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34
examples/mifare-classic-format.c
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@ -33,7 +33,8 @@
#define START_FORMAT_N "Formatting %d sectors ["
#define DONE_FORMAT "] done.\n"
MifareClassicKey default_keys[] = {
MifareClassicKey default_keys[40];
MifareClassicKey default_keys_int[] = {
{ 0xff,0xff,0xff,0xff,0xff,0xff },
{ 0xd3,0xf7,0xd3,0xf7,0xd3,0xf7 },
{ 0xa0,0xa1,0xa2,0xa3,0xa4,0xa5 },
@ -129,10 +130,11 @@ try_format_sector (MifareTag tag, MifareClassicSectorNumber sector)
static void
usage(char *progname)
{
fprintf (stderr, "usage: %s [-fy]\n", progname);
fprintf (stderr, "usage: %s [-fy] [keyfile]\n", progname);
fprintf (stderr, "\nOptions:\n");
fprintf (stderr, " -f Fast format (only erase MAD)\n");
fprintf (stderr, " -y Do not ask for confirmation (dangerous)\n");
fprintf (stderr, " -f Fast format (only erase MAD)\n");
fprintf (stderr, " -y Do not ask for confirmation (dangerous)\n");
fprintf (stderr, " keyfile Use keys from dump in addition to internal default keys\n");
}
int
@ -162,6 +164,30 @@ main(int argc, char *argv[])
}
// Remaining args, if any, are in argv[optind .. (argc-1)]
memcpy(default_keys, default_keys_int, sizeof(default_keys_int));
if ((argc - optind) > 0)
{
int i, rc;
char kbuffer[1024] = {0};
memset ( kbuffer, 0, sizeof kbuffer);
FILE *fp = fopen(argv[optind], "rb");
if (fp == NULL)
errx(EXIT_FAILURE, "Unable to open file");
for (i = 0; (rc = getc(fp)) != EOF && i < 1024; kbuffer[i++] = rc) { }
fclose(fp);
i = sizeof(default_keys_int) / 6;
for(int s = 0; s<16; s++)
{
int startblock = s * 4;
int pos_a = (startblock + 3) * 16;
int pos_b = (startblock + 3) * 16 + 10;
memcpy((default_keys + i++), kbuffer + pos_a, 6);
memcpy((default_keys + i++), kbuffer + pos_b, 6);
}
}
nfc_connstring devices[8];
size_t device_count;