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Update cmdlfindala.c

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25 But parity diz
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mwalker33 2024-08-17 13:41:16 +10:00
commit 20a0713441
1 changed files with 17 additions and 2 deletions
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19
client/src/cmdlfindala.c
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@ -1136,6 +1136,7 @@ int getIndalaBits(uint8_t fc, uint16_t cn, uint8_t *bits) {
bits[51] = ((cn >> 8) & 1); // b9 - c
bits[46] = ((cn >> 7) & 1); // b8
bits[33] = ((cn >> 6) & 1); // b7 - c
// bits[61] = ((cn >> 6) & 1); // b7 - c
bits[37] = ((cn >> 5) & 1); // b6 - c
bits[54] = ((cn >> 4) & 1); // b5
bits[56] = ((cn >> 3) & 1); // b4
@ -1164,11 +1165,25 @@ int getIndalaBits(uint8_t fc, uint16_t cn, uint8_t *bits) {
}
// add parity
bits[34] = 1; // p1 64 - 30 = 34
bits[38] = 1; // p2 68 - 30 = 38
// bits[34] = 1; // p1 64 - 30 = 34
// bits[38] = 1; // p2 68 - 30 = 38
// 92 = 62
// 93 = 63
bits[34] = 0; // parity for odd bits
bits[38] = 0; // parity for even bits
uint8_t p1 = 1;
uint8_t p2 = 1;
for (int i=33; i < 64; i++) {
if (i%2)
p1 ^= bits[i];
else
p2 ^= bits[i];
}
bits[34] = p1; // parity for odd bits
bits[38] = p2; // parity for even bits
return PM3_SUCCESS;
}