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removed failed hitag2 authentication attempts from the list

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roel@libnfc.org 2013-03-18 15:32:19 +00:00
parent 759c16b31f
commit 43751d2a65
1 changed files with 10 additions and 3 deletions
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13
armsrc/hitag2.c
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@ -677,12 +677,19 @@ bool hitag2_test_auth_attempts(byte_t* rx, const size_t rxlen, byte_t* tx, size_
case 0: {
// Stop if there is no answer while we are in crypto mode (after sending NrAr)
if (bCrypto) {
Dbprintf("auth: %02x%02x%02x%02x%02x%02x%02x%02x Failed!",NrAr[0],NrAr[1],NrAr[2],NrAr[3],NrAr[4],NrAr[5],NrAr[6],NrAr[7]);
Dbprintf("auth: %02x%02x%02x%02x%02x%02x%02x%02x Failed, removed entry!",NrAr[0],NrAr[1],NrAr[2],NrAr[3],NrAr[4],NrAr[5],NrAr[6],NrAr[7]);
// Removing failed entry from authentiations table
memcpy(auth_table+auth_table_pos,auth_table+auth_table_pos+8,8);
auth_table_len -= 8;
// Return if we reached the end of the authentiactions table
bCrypto = false;
if ((auth_table_pos+8) == auth_table_len) {
if (auth_table_pos == auth_table_len) {
return false;
}
auth_table_pos += 8;
// Copy the next authentication attempt in row (at the same position, b/c we removed last failed entry)
memcpy(NrAr,auth_table+auth_table_pos,8);
}
*txlen = 5;