when dumping memory also try the MFC_B key

CHANGELOG.md

@@ -3,6 +3,7 @@ All notable changes to this project will be documented in this file.
 This project uses the changelog in accordance with [keepchangelog](http://keepachangelog.com/). Please use this to write notable changes, which is not the same as git commit log...
 
 ## [unreleased][unreleased]
+- Changed to also try the MFC_B key when extracting memory (@iceman1001)
 - Fix parallel `make -j check`  Thanks @elboulangero  (@iceman1001)
 - Added support for 8268/8310 (@douniwan5788)
 - Changed scripting string params to accept 1024 chars, Thanks @evildaemond! (@iceman1001)

armsrc/mifarecmd.c

@@ -1605,7 +1605,7 @@ static uint8_t chkKey(struct chk_t *c) {
         // mifare_classic_halt(c->pcs);
         break;
     }
-    if (!selected) {
+    if (selected == false) {
         Dbprintf("chkKey: Failed at fast selecting the card!");
     }
     return res;
@@ -2396,12 +2396,17 @@ int MifareECardLoad(uint8_t sectorcnt, uint8_t keytype) {
 
         // Auth
         if (mifare_classic_auth(pcs, cuid, FirstBlockOfSector(s), keytype, ui64Key, AUTH_FIRST)) {
+
+            ui64Key = emlGetKey(s, MF_KEY_B);
+
+            if (mifare_classic_auth(pcs, cuid, FirstBlockOfSector(s), MF_KEY_B, ui64Key, AUTH_FIRST)) {
             retval = PM3_EPARTIAL;
             if (g_dbglevel >= DBG_ERROR) {
                 Dbprintf("Sector %2d - Auth error", s);
             }
             continue;
         }
+        }
 
 
 #define MAX_RETRIES 2