]> git.zerfleddert.de Git - proxmark3-svn/commitdiff
fixed hitag2 dump if one or more blocks are locked
authorroel@libnfc.org <roel@libnfc.org@ef4ab9da-24cd-11de-8aaa-f3a34680c41f>
Mon, 10 Dec 2012 15:12:32 +0000 (15:12 +0000)
committerroel@libnfc.org <roel@libnfc.org@ef4ab9da-24cd-11de-8aaa-f3a34680c41f>
Mon, 10 Dec 2012 15:12:32 +0000 (15:12 +0000)
armsrc/hitag2.c

index 6f5557f61b04472f48aaad5c18d0759129cdc72e..05ac1f5e8e0a81258d4919c89a7ddd2f43795ddc 100644 (file)
@@ -524,11 +524,27 @@ bool hitag2_crypto(byte_t* rx, const size_t rxlen, byte_t* tx, size_t* txlen) {
                case 0: {
                        // Stop if there is no answer while we are in crypto mode (after sending NrAr)
                        if (bCrypto) {
                case 0: {
                        // Stop if there is no answer while we are in crypto mode (after sending NrAr)
                        if (bCrypto) {
-                               DbpString("Authentication failed!");
-                               return false;
-                       }
-                       *txlen = 5;
-                       memcpy(tx,"\xc0",nbytes(*txlen));
+        // Failed during authentication
+        if (bAuthenticating) {
+          DbpString("Authentication failed!");
+          return false;
+        } else {
+          // Failed reading a block, could be (read/write) locked, skip block and re-authenticate
+          if (blocknr == 1) {
+            memcpy(tag.sectors[1],key+2,4);
+          } else if (blocknr == 2) {
+            tag.sectors[2][0] = 0x00;
+            tag.sectors[2][1] = 0x00;
+            tag.sectors[2][2] = key[0];
+            tag.sectors[2][3] = key[1];
+          }
+          blocknr++;
+          bCrypto = false;
+        }
+                       } else {
+        *txlen = 5;
+        memcpy(tx,"\xc0",nbytes(*txlen));
+      }
                } break;
                        
       // Received UID, crypto tag answer
                } break;
                        
       // Received UID, crypto tag answer
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