diff --git a/client/src/cipurse/cipursecore.c b/client/src/cipurse/cipursecore.c
index 8f61d843d..f4dea46b4 100644
--- a/client/src/cipurse/cipursecore.c
+++ b/client/src/cipurse/cipursecore.c
@@ -11,15 +11,83 @@
 #include "cipursecore.h"
 
 #include "commonutil.h"  // ARRAYLEN
+#include "comms.h"       // DropField
+#include "util_posix.h"  // msleep
 
+#include "cmdhf14a.h"
 #include "emv/emvcore.h"
 #include "emv/emvjson.h"
 #include "ui.h"
 #include "util.h"
 
+static int CIPURSEExchangeEx(bool ActivateField, bool LeaveFieldON, sAPDU apdu, bool IncludeLe, uint16_t Le, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw) {
+    uint8_t data[APDU_RES_LEN] = {0};
+
+    *ResultLen = 0;
+    if (sw) *sw = 0;
+    uint16_t isw = 0;
+    int res = 0;
+
+    if (ActivateField) {
+        DropField();
+        msleep(50);
+    }
+
+    // COMPUTE APDU
+    int datalen = 0;
+    uint16_t xle = IncludeLe ? 0x100 : 0x00;
+    if (xle == 0x100 && Le != 0)
+        xle = Le;
+    if (APDUEncodeS(&apdu, false, xle, data, &datalen)) {
+        PrintAndLogEx(ERR, "APDU encoding error.");
+        return 201;
+    }
+
+    if (GetAPDULogging())
+        PrintAndLogEx(SUCCESS, ">>>> %s", sprint_hex(data, datalen));
+
+    res = ExchangeAPDU14a(data, datalen, ActivateField, LeaveFieldON, Result, (int)MaxResultLen, (int *)ResultLen);
+    if (res) {
+        return res;
+    }
+
+    if (GetAPDULogging())
+        PrintAndLogEx(SUCCESS, "<<<< %s", sprint_hex(Result, *ResultLen));
+
+    if (*ResultLen < 2) {
+        return 200;
+    }
+
+    *ResultLen -= 2;
+    isw = Result[*ResultLen] * 0x0100 + Result[*ResultLen + 1];
+    if (sw)
+        *sw = isw;
+
+    if (isw != 0x9000) {
+        if (GetAPDULogging()) {
+            if (*sw >> 8 == 0x61) {
+                PrintAndLogEx(ERR, "APDU chaining len:%02x -->", *sw & 0xff);
+            } else {
+                PrintAndLogEx(ERR, "APDU(%02x%02x) ERROR: [%4X] %s", apdu.CLA, apdu.INS, isw, GetAPDUCodeDescription(*sw >> 8, *sw & 0xff));
+                return 5;
+            }
+        }
+    }
+
+    return PM3_SUCCESS;
+}
+
+/*static int CIPURSEExchange(sAPDU apdu, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw) {
+    return CIPURSEExchangeEx(false, true, apdu, true, 0, Result, MaxResultLen, ResultLen, sw);
+}*/
+
 int CIPURSESelect(bool ActivateField, bool LeaveFieldON, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw) {
     uint8_t data[] = {0x41, 0x44, 0x20, 0x46, 0x31};
 
     return EMVSelect(ECC_CONTACTLESS, ActivateField, LeaveFieldON, data, sizeof(data), Result, MaxResultLen, ResultLen, sw, NULL);
 }
 
+int CIPURSEChallenge(uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw) {
+    return CIPURSEExchangeEx(false, true, (sAPDU) {0x00, 0x84, 0x00, 0x00, 0x00, NULL}, true, 0x16, Result, MaxResultLen, ResultLen, sw);
+}
+
diff --git a/client/src/cipurse/cipursecore.h b/client/src/cipurse/cipursecore.h
index 7598b8343..8a18011f2 100644
--- a/client/src/cipurse/cipursecore.h
+++ b/client/src/cipurse/cipursecore.h
@@ -12,10 +12,14 @@
 #define __CIPURSECORE_H__
 
 #include "common.h"
+#include "emv/apduinfo.h"
+
 
 #include <jansson.h>
 #include "emv/apduinfo.h" // sAPDU
 
 int CIPURSESelect(bool ActivateField, bool LeaveFieldON, uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw);
 
+int CIPURSEChallenge(uint8_t *Result, size_t MaxResultLen, size_t *ResultLen, uint16_t *sw);
+
 #endif /* __CIPURSECORE_H__ */
diff --git a/client/src/cmdhfcipurse.c b/client/src/cmdhfcipurse.c
index 1a1cd7770..a1e9176b1 100644
--- a/client/src/cmdhfcipurse.c
+++ b/client/src/cmdhfcipurse.c
@@ -80,6 +80,36 @@ static int CmdHFCipurseInfo(const char *Cmd) {
     return PM3_SUCCESS;
 }
 
+static int CmdHFCipurseAuth(const char *Cmd) {
+    uint8_t buf[APDU_RES_LEN] = {0};
+    size_t len = 0;
+    uint16_t sw = 0;
+    
+    SetAPDULogging(true);
+    
+    int res = CIPURSESelect(true, true, buf, sizeof(buf), &len, &sw);
+    if (res != 0 || sw != 0x9000) {
+        PrintAndLogEx(ERR, "Cipurse select error. Card returns 0x%04x.", sw);
+        DropField();
+        return PM3_ESOFT;
+    }
+
+    res = CIPURSEChallenge(buf, sizeof(buf), &len, &sw);
+    if (res != 0 || len != 0x16) {
+        PrintAndLogEx(ERR, "Cipurse get challenge error. Card returns 0x%04x.", sw);
+        DropField();
+        return PM3_ESOFT;
+    }
+    
+    
+    DropField();
+    return PM3_SUCCESS;
+}
+
+
+
+
+
 
 
 
@@ -96,6 +126,7 @@ bool CheckCardCipurse(void) {
 static command_t CommandTable[] = {
     {"help",      CmdHelp,                   AlwaysAvailable, "This help."},
     {"info",      CmdHFCipurseInfo,          IfPm3Iso14443a,  "Info about Cipurse tag."},
+    {"auth",      CmdHFCipurseAuth,          IfPm3Iso14443a,  "Authentication."},
     {NULL, NULL, 0, NULL}
 };