Mirror/Momentum-Firmware
1
0
Fork 0
mirror of https://github.com/Next-Flip/Momentum-Firmware.git synced 2026-04-25 03:29:58 -07:00
Code Issues Packages Projects Releases Wiki Activity

MRTD generalize app selection

Browse Source
This commit is contained in:
Chris van Marle
2022-10-11 22:13:07 +02:00
parent c4499e221f
commit 27a74c4b87
4 changed files with 56 additions and 155 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
lib/nfc/protocols/mrtd_helpers.c
View File

@@ -3,6 +3,8 @@
#include <mbedtls/sha1.h>
#include <mbedtls/des.h>
static inline unsigned char *ucstr(const char *str) { return (unsigned char *)str; }
uint8_t mrtd_bac_check_digit(const uint8_t* input, const uint8_t length) {
const uint8_t num_weights = 3;
uint8_t weights[] = {7, 3, 1};
@@ -75,7 +77,7 @@ bool mrtd_bac_keys(const uint8_t kseed[16], uint8_t ksenc[16], uint8_t ksmac[16]
for(uint8_t i=1; i<=2; ++i) {
if(mbedtls_sha1_starts(&ctx)) break;
if(mbedtls_sha1_update(&ctx, kseed, 16)) break;
if(mbedtls_sha1_update(&ctx, "\x00\x00\x00", 3)) break;
if(mbedtls_sha1_update(&ctx, ucstr("\x00\x00\x00"), 3)) break;
if(mbedtls_sha1_update(&ctx, &i, 1)) break;
if(mbedtls_sha1_finish(&ctx, hash)) break;