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combine all auth data to single struct and fill it

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This commit is contained in:
Oleg Moiseenko 2018-02-10 19:03:29 +02:00
parent fb30f5a101
commit aadc6bf1e1
3 changed files with 45 additions and 16 deletions
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1
client/cmdhf.c
View file

@ -543,6 +543,7 @@ int CmdHFList(const char *Cmd)
PrintAndLog(" Start | End | Src | Data (! denotes parity error) | CRC | Annotation |");
PrintAndLog("------------|------------|-----|-----------------------------------------------------------------|-----|--------------------|");
ClearAuthData();
while(tracepos < traceLen)
{
tracepos = printTraceLine(tracepos, traceLen, trace, protocol, showWaitCycles, markCRCBytes);

46
client/cmdhflist.c
View file

@ -28,11 +28,19 @@ enum MifareAuthSeq {
masNt,
masNrAr,
masAt,
masFirstData,
masData,
masDataNested,
masError,
};
static enum MifareAuthSeq MifareAuthState;
static TAuthData AuthData;
void ClearAuthData() {
AuthData.uid = 0;
AuthData.nt = 0;
AuthData.first_auth = false;
}
/**
* @brief iso14443A_CRC_check Checks CRC in command or response
@ -63,6 +71,7 @@ uint8_t mifare_CRC_check(bool isResponse, uint8_t* data, uint8_t len)
{
switch(MifareAuthState) {
case masNone:
case masFirstData:
case masData:
case masDataNested:
case masError:
@ -172,22 +181,27 @@ void annotateIso14443a(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize)
}
void annotateMifare(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize, bool isResponse) {
// uint32_t uid; // UID
static uint32_t nt; // tag challenge
// uint32_t nt_enc; // encrypted tag challenge
// uint8_t nt_enc_par; // encrypted tag challenge parity
static uint32_t nr_enc; // encrypted reader challenge
static uint32_t ar_enc; // encrypted reader response
// uint8_t ar_enc_par; // encrypted reader response parity
static uint32_t at_enc; // encrypted tag response
// uint8_t at_enc_par; // encrypted tag response parity
// get UID
if (MifareAuthState == masNone) {
if (cmdsize == 7 && cmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT && cmd[1] == 0x70) {
ClearAuthData();
AuthData.uid = bytes_to_num(&cmd[2], 4);
}
if (cmdsize == 7 && cmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_2 && cmd[1] == 0x70) {
ClearAuthData();
AuthData.uid = bytes_to_num(&cmd[2], 4);
}
}
switch(MifareAuthState) {
case masNt:
if (cmdsize == 4 && isResponse) {
snprintf(exp,size,"AUTH: nt %s", (nt) ? "(enc)" : "");
snprintf(exp,size,"AUTH: nt %s", (AuthData.first_auth) ? "" : "(enc)");
MifareAuthState = masNrAr;
nt = bytes_to_num(cmd, cmdsize);
if (AuthData.first_auth)
AuthData.nt = bytes_to_num(cmd, cmdsize);
else
AuthData.nt_enc = bytes_to_num(cmd, cmdsize);
return;
} else {
MifareAuthState = masError;
@ -197,8 +211,8 @@ void annotateMifare(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize, bool
if (cmdsize == 8 && !isResponse) {
snprintf(exp,size,"AUTH: nr ar (enc)");
MifareAuthState = masAt;
nr_enc = bytes_to_num(cmd, cmdsize);
ar_enc = bytes_to_num(&cmd[3], cmdsize);
AuthData.nr_enc = bytes_to_num(cmd, cmdsize);
AuthData.ar_enc = bytes_to_num(&cmd[3], cmdsize);
return;
} else {
MifareAuthState = masError;
@ -207,8 +221,8 @@ void annotateMifare(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize, bool
case masAt:
if (cmdsize == 4 && isResponse) {
snprintf(exp,size,"AUTH: at (enc)");
MifareAuthState = masData;
at_enc = bytes_to_num(cmd, cmdsize);
MifareAuthState = masFirstData;
AuthData.at_enc = bytes_to_num(cmd, cmdsize);
return;
} else {
MifareAuthState = masError;

14
client/cmdhflist.h
View file

@ -14,6 +14,20 @@
#include <stdint.h>
#include <stdbool.h>
typedef struct {
uint32_t uid; // UID
uint32_t nt; // tag challenge
uint32_t nt_enc; // encrypted tag challenge
uint8_t nt_enc_par; // encrypted tag challenge parity
uint32_t nr_enc; // encrypted reader challenge
uint32_t ar_enc; // encrypted reader response
uint8_t ar_enc_par; // encrypted reader response parity
uint32_t at_enc; // encrypted tag response
uint8_t at_enc_par; // encrypted tag response parity
bool first_auth; // is first authentication
} TAuthData;
extern void ClearAuthData();
extern uint8_t iso14443A_CRC_check(bool isResponse, uint8_t* data, uint8_t len);
extern uint8_t mifare_CRC_check(bool isResponse, uint8_t* data, uint8_t len);
extern void annotateIso14443a(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize);