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AC Response Format1

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This commit is contained in:
merlokk 2019-01-10 16:22:32 +02:00
commit 607bef7ffd
3 changed files with 64 additions and 5 deletions
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53
client/emv/cmdemv.c
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@ -38,6 +38,9 @@ void ParamLoadDefaults(struct tlvdb *tlvRoot) {
TLV_ADD(0x9F6A, "\x01\x02\x03\x04");
//9F66:(Terminal Transaction Qualifiers (TTQ)) len:4
TLV_ADD(0x9F66, "\x26\x00\x00\x00"); // qVSDC
//95:(Terminal Verification Results) len:5
// all OK TVR
TLV_ADD(0x95, "\x00\x00\x00\x00\x00");
}
void PrintChannel(EMVCommandChannel channel) {
@ -685,6 +688,50 @@ void ProcessGPOResponseFormat1(struct tlvdb *tlvRoot, uint8_t *buf, size_t len,
}
}
void ProcessACResponseFormat1(struct tlvdb *tlvRoot, uint8_t *buf, size_t len, bool decodeTLV) {
if (buf[0] == 0x80) {
if (decodeTLV){
PrintAndLog("GPO response format1:");
TLVPrintFromBuffer(buf, len);
}
uint8_t elmlen = len - 2; // wo 0x80XX
if (len < 4 + 2 || (elmlen - 2) % 4 || elmlen != buf[1]) {
PrintAndLogEx(ERR, "GPO response format1 parsing error. length=%d", len);
} else {
struct tlvdb *tlvElm = NULL;
if (decodeTLV)
PrintAndLog("\n------------ Format1 decoded ------------");
// CID (Cryptogram Information Data)
tlvdb_change_or_add_node_ex(tlvRoot, 0x9f27, 1, &buf[2], &tlvElm);
if (decodeTLV)
TLVPrintFromTLV(tlvElm);
// ATC (Application Transaction Counter)
tlvdb_change_or_add_node_ex(tlvRoot, 0x9f36, 2, &buf[3], &tlvElm);
if (decodeTLV)
TLVPrintFromTLV(tlvElm);
// AC (Application Cryptogram)
tlvdb_change_or_add_node_ex(tlvRoot, 0x9f26, min(8, elmlen - 3), &buf[5], &tlvElm);
if (decodeTLV)
TLVPrintFromTLV(tlvElm);
// IAD (Issuer Application Data) - optional
if (len > 11 + 2) {
tlvdb_change_or_add_node_ex(tlvRoot, 0x9f10, elmlen - 11, &buf[13], &tlvElm);
if (decodeTLV)
TLVPrintFromTLV(tlvElm);
}
}
} else {
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
}
}
int CmdEMVExec(const char *cmd) {
uint8_t buf[APDU_RES_LEN] = {0};
size_t len = 0;
@ -1151,9 +1198,9 @@ int CmdEMVExec(const char *cmd) {
PrintAndLogEx(NORMAL, "AC1 error(%d): %4x. Exit...", res, sw);
dreturn(7);
}
if (decodeTLV)
TLVPrintFromBuffer(buf, len);
// process Format1 (0x80) anf print Format2 (0x77)
ProcessACResponseFormat1(tlvRoot, buf, len, decodeTLV);
PrintAndLogEx(NORMAL, "\n* * Processing online request\n");