-
-
Notifications
You must be signed in to change notification settings - Fork 384
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Add support for writing to PowerTags. #30
- Loading branch information
1 parent
648c267
commit 3ccfe0a
Showing
9 changed files
with
65,766 additions
and
41 deletions.
There are no files selected for viewing
Large diffs are not rendered by default.
Oops, something went wrong.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
92 changes: 92 additions & 0 deletions
92
app/src/main/java/com/hiddenramblings/tagmo/ptag/PTagKeyManager.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| package com.hiddenramblings.tagmo.ptag; | ||
|
|
||
| import android.content.Context; | ||
| import android.content.res.AssetManager; | ||
| import android.util.Base64; | ||
| import android.util.Log; | ||
|
|
||
| import com.hiddenramblings.tagmo.Util; | ||
| import com.hiddenramblings.tagmo.amiibo.AmiiboManager; | ||
|
|
||
| import org.json.JSONException; | ||
| import org.json.JSONObject; | ||
|
|
||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.nio.charset.Charset; | ||
| import java.util.HashMap; | ||
| import java.util.Hashtable; | ||
| import java.util.Iterator; | ||
|
|
||
| public class PTagKeyManager { | ||
| private static final String TAG = "PTagKeyManager"; | ||
| public static final String KEY_LIST_FILE = "keytable.json"; | ||
|
|
||
| private static HashMap<String, HashMap<String, byte[]>> keys; | ||
|
|
||
| public static void load(Context context) throws Exception { | ||
| if (keys != null) | ||
| return; | ||
| AssetManager assetManager = context.getAssets(); | ||
| InputStream stream = assetManager.open(KEY_LIST_FILE); | ||
| try { | ||
| byte[] data = new byte[stream.available()]; | ||
| stream.read(data); | ||
|
|
||
| JSONObject obj = new JSONObject(new String(data)); | ||
| loadJson(obj); | ||
| } finally { | ||
| stream.close(); | ||
| } | ||
| } | ||
|
|
||
| static void loadJson(JSONObject json) throws JSONException { | ||
| HashMap<String, HashMap<String, byte[]>> keytable = new HashMap<>(); | ||
| for (Iterator uidIterator = json.keys(); uidIterator.hasNext(); ) { | ||
| String uid = (String) uidIterator.next(); | ||
| JSONObject pageKeys = json.getJSONObject(uid); | ||
|
|
||
| HashMap<String, byte[]> keyvalues = new HashMap<String, byte[]>(); | ||
| keytable.put(uid, keyvalues); | ||
|
|
||
| for (Iterator pageByteIterator = pageKeys.keys(); pageByteIterator.hasNext(); ) { | ||
| String pageBytes = (String) pageByteIterator.next(); | ||
|
|
||
| String keyStr = pageKeys.getString(pageBytes); | ||
|
|
||
| byte[] key = Base64.decode(keyStr, Base64.DEFAULT); | ||
|
|
||
| keyvalues.put(pageBytes, key); | ||
| } | ||
| } | ||
|
|
||
| keys = keytable; | ||
| } | ||
|
|
||
| public static byte[] getKey(byte[] uid, String page10bytes) throws Exception { | ||
| if (keys == null) | ||
| throw new Exception("PowerTag keys not loaded"); | ||
|
|
||
| byte[] uidc = new byte[7]; | ||
|
|
||
| uidc[0] = (byte)(uid[0] & 0xFE); | ||
| uidc[1] = (byte)(uid[1] & 0xFE); | ||
| uidc[2] = (byte)(uid[2] & 0xFE); | ||
| uidc[3] = (byte)(uid[3] & 0xFE); | ||
| uidc[4] = (byte)(uid[4] & 0xFE); | ||
| uidc[5] = (byte)(uid[5] & 0xFE); | ||
| uidc[6] = (byte)(uid[6] & 0xFE); | ||
|
|
||
| String uidStr = Util.bytesToHex(uidc); | ||
|
|
||
| HashMap<String, byte[]> keymap = keys.get(uidStr); | ||
| if (keymap == null) | ||
| throw new Exception("No available key for UID"); | ||
|
|
||
| byte[] key = keymap.get(page10bytes); | ||
| if (key == null) | ||
| throw new Exception("No available key for P10_ID"); | ||
|
|
||
| return key; | ||
| } | ||
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters