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hf emv challenge works

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merlokk 2018-09-12 20:20:27 +03:00
commit 8ffdccffa0
1 changed files with 35 additions and 0 deletions
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35
client/emv/cmdemv.c
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@ -321,6 +321,41 @@ int CmdHFEMVAC(const char *cmd) {
int CmdHFEMVGenerateChallenge(const char *cmd) {
CLIParserInit("hf 14a challenge",
"Executes Generate Challenge command. It returns 4-byte random number from card:\n",
"Usage:\n\thf emv challenge -> get challenge\n\thf emv challenge -k -> get challenge, keep fileld ON\n");
void* argtable[] = {
arg_param_begin,
arg_lit0("kK", "keep", "keep field ON for next command"),
arg_lit0("aA", "apdu", "show APDU reqests and responses"),
arg_param_end
};
CLIExecWithReturn(cmd, argtable, true);
bool leaveSignalON = arg_get_lit(1);
bool APDULogging = arg_get_lit(2);
CLIParserFree();
SetAPDULogging(APDULogging);
// exec
uint8_t buf[APDU_RES_LEN] = {0};
size_t len = 0;
uint16_t sw = 0;
int res = EMVGenerateChallenge(leaveSignalON, buf, sizeof(buf), &len, &sw, NULL);
if (sw)
PrintAndLog("APDU response status: %04x - %s", sw, GetAPDUCodeDescription(sw >> 8, sw & 0xff));
if (res)
return res;
PrintAndLog("Challenge: %s", sprint_hex(buf, len));
if (len != 4 && len != 8)
PrintAndLog("WARNING: length of challenge must be 4 or 8, but it %d", len);
return 0;
}