segatools/iccard/aime.c

48 lines
1.1 KiB
C

#include <assert.h>
#include <stddef.h>
#include <stdint.h>
#include "iccard/aime.h"
#include "iccard/mifare.h"
#include "util/dprintf.h"
HRESULT aime_card_populate(
struct mifare *mifare,
const uint8_t *luid,
size_t nbytes)
{
uint8_t b;
size_t i;
assert(mifare != NULL);
assert(luid != NULL);
memset(mifare, 0, sizeof(*mifare));
if (nbytes != 10) {
dprintf("AiMe IC: LUID must be 10 bytes\n");
return E_INVALIDARG;
}
for (i = 0 ; i < 10 ; i++) {
b = luid[i];
if ((b & 0xF0) > 0x90 || (b & 0x0F) > 0x09) {
dprintf("AiMe IC: LUID must be binary-coded decimal\n");
return E_INVALIDARG;
}
mifare->sectors[0].blocks[2].bytes[6 + i] = b;
}
/* TODO An authentic Aime pass has a checksum of the LUID in the last few
bytes of block 1. The output of this function fails authenticity check
in its current form. */
dprintf("AiMe IC: WARNING: Authenticity hash not yet implemented!\n");
return S_OK;
}