github/RRG-Proxmark3
1
0
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-08-21 05:43:48 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions 4

FIX: Some <= fix for pwpivi 's hardnested suggested on the Pm3 forum.

Browse source
This commit is contained in:
iceman1001 2016-01-13 21:51:47 +01:00
commit 4b2e63be17
1 changed files with 11 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

24
client/cmdhfmfhard.c
View file

@ -286,20 +286,18 @@ static double p_hypergeometric(uint16_t N, uint16_t K, uint16_t n, uint16_t k)
static float sum_probability(uint16_t K, uint16_t n, uint16_t k)
{
const uint16_t N = 256;
if (k > K || p_K[K] == 0.0) return 0.0;
if (k > K || p_K[K] == 0.0) return 0.0;
double p_T_is_k_when_S_is_K = p_hypergeometric(N, K, n, k);
double p_S_is_K = p_K[K];
double p_T_is_k = 0;
for (uint16_t i = 0; i <= 256; i++) {
if (p_K[i] != 0.0) {
p_T_is_k += p_K[i] * p_hypergeometric(N, i, n, k);
}
double p_T_is_k_when_S_is_K = p_hypergeometric(N, K, n, k);
double p_S_is_K = p_K[K];
double p_T_is_k = 0;
for (uint16_t i = 0; i <= 256; i++) {
if (p_K[i] != 0.0) {
p_T_is_k += p_K[i] * p_hypergeometric(N, i, n, k);
}
return(p_T_is_k_when_S_is_K * p_S_is_K / p_T_is_k);
}
return(p_T_is_k_when_S_is_K * p_S_is_K / p_T_is_k);
}
@ -514,7 +512,7 @@ static void sort_best_first_bytes(void)
// determine how many are above the CONFIDENCE_THRESHOLD
uint16_t num_good_nonces = 0;
for (uint16_t i = 0; i < 256; i++) {
if (nonces[best_first_bytes[i]].Sum8_prob > CONFIDENCE_THRESHOLD) {
if (nonces[best_first_bytes[i]].Sum8_prob >= CONFIDENCE_THRESHOLD) {
++num_good_nonces;
}
}
@ -603,7 +601,7 @@ static uint16_t estimate_second_byte_sum(void)
uint16_t num_good_nonces = 0;
for (uint16_t i = 0; i < 256; i++) {
if (nonces[best_first_bytes[i]].Sum8_prob > CONFIDENCE_THRESHOLD) {
if (nonces[best_first_bytes[i]].Sum8_prob >= CONFIDENCE_THRESHOLD) {
++num_good_nonces;
}
}