mifare

I need to find a solution to write Mifare Classic 1 K Tag with Custom Key. I am unable to write it, I have tried with every option but unfortunately all the time I get the error "IOException: Transceive Failed". Below is my code snippet: byte custom_key[]={ (byte)0xff,(byte)0xff,(byte)0xff,(byte)0xff,(byte)0xff,(byte)0xff }; // 16 bytes of Data. Otherwise it was throwing IllegalArgumentException . byte[] data="Hello world of N".getBytes(); getMfc().connect(); if(getMfc().authenticateSectorWithKeyA(4, custom_key)) { getMfc().writeBlock(3, data); // Here I receive IOException all the time. }

I have been trying to write some data to my mifare classic cards. first I send these two commands which returns 90 00: Load Mifare Keys: FF 82 20 01 06 FF FF FF FF FF FF Authenticate: FF 86 00 00 05 01 00 01 60 01 now I can write commands to sector 0 and block 1 + 2 ff d6 00 01 10 14 01 03 E1 03 E1 03 E1 03 E1 03 E1 03 E1 03 E1 ff d6 00 02 10 03 E1 03 E1 03 E1 03 E1 03 E1 03 E1 03 E1 03 E1 i mistakenly overwritten block 3 a few times rendering this sector unreadable it seems: if I send the command ff d6 00 04 10 I get return error 69 82 which i googled as authentication error do I need to

I've got an ACR122U NFC card reader and ACR122T token from ACS. I'm trying to run their NFC Peer to Peer demo. I've installed the ACR122U SDK, mysql and connector, set up the database, and added the escape command to the registry. When I try to run the peer to peer demo I carry out the following steps (with resultant log results shown) Insert NFC ACR122T into USB port. Open the Smart Poster application and click initalise with reader 0. Log: D1: 2:04:57 PM Program ready D1: 2:05:02 PM Succesful connection to : ACS ACR122U PICC Interface 0 Direct Mode D1: 2:05:02 PM << FF 00 48 00 FF D1: 2:05

I am trying to develop an Android application that uses the features (specifically read protection) of the MF0ICU2 tags (Mifare Ultralight C). That tags are Mifare DESFire EV1 compatible. Into Android classes, MifareUltralightTag have only standard Read and Write capability, but with transceive method you could send raw command to Tag, for example 0x30 0xYY is a read page and it works. But how use raw command to use security capability on MF0ICU2 tags? Does anyone have experience with this type of programming? You should request the datasheet for the MIFARE Ultralight C tags from the

I have an Android tablet with Android 4.2. This tablet does not have NFC hardware. However I have an external USB reader: ACR 1252U , that came with an Android library . I have asked some general questions of my setup here . Now that it gets more specific, I need to ask another one. In this previous question I found out, that I can use the ACS Android library to access the readers card emulation capabilities. My first goal is to make that reader emulate an NFC tag, that contains a URL. Any NFC-capable Android phone should be able to scan this emulated tag and automatically open the browser. I

I am writing an app that works with NFC and MIFARE CARD. When my NFC device detect a card, it shows me the list of application that can use NFC, but my application is not mentioned. What I am missing on my android manifest file? <uses-permission android:name="android.permission.NFC" /> <uses-sdk android:minSdkVersion="14" android:targetSdkVersion="17" /> <uses-feature android:name="android.hardware.nfc" android:required="true" /> <application android:icon="@drawable/ic_launcher" android:allowBackup="true" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android