Merge pull request #2508 from xxDUxx/master

New App: PIN safe

apps/contourclock/ChangeLog

@@ -8,4 +8,4 @@
 0.26: Time formatted to locale
 0.27: Fixed the timing code, which sometimes did not update for one minute
 0.28: More config options for cleaner look, enabled fast loading
-0.29: Fixed a bug that would leave old font files in storage. 
+0.29: Fixed a bug that would leave old font files in storage.

apps/pinsafe/ChangeLog

@@ -0,0 +1 @@
+0.01: Initial version

apps/pinsafe/README.md

@@ -0,0 +1,8 @@
+# PIN safe
+Stores several encrypted PINs on your watch. You can use one key to decode them all.
+This is safe, as long as:
+- None of the PINs can be guessed by a brute force attack.
+- All of the PINs are random.
+- Your key is long enough (preferably as long as your PINs).
+
+This app requires a keyboard!

apps/pinsafe/app-icon.js

@@ -0,0 +1 @@
+atob("MDCBAAAAB+AAAAAAH/gAAAAAfD4AAAAB8A+AAAAHwAPgAAAfAAD4AAD4AAAfAA/gAAAH8B8AAAAA+BgAAAAAGBgAAAAAGBgAAAAAGBgAAAAAGBgAAAAAGBgAAAAAGBgAAAOAGAwAAAMAMAwAAAYAMAwAAAYAMAwAAAwAMAwAABwAMAwAABgAYAYAQDAAYAYAYHAAYAYAcGAAYAMAGMAAwAMAD8AAwAMAB4ABgAGAAwABgAGAAAABgADAAAADAADAAAAHAABgAAAGAABgAAAMAAAwAAAMAAAYAAAYAAAcAAAwAAAMAABwAAAGAABgAAADAADAAAADgAGAAAABwAMAAAAA4A4AAAAAOBwAAAAAHDgAAAAAD/AAAAAAA8AAAAAAAYAAAA==")

apps/pinsafe/app.js

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+var Layout = require("Layout");
+var myTimeout;
+var pins = Object.assign(require('Storage').readJSON("pinsafe.json", true) || {});
+function mainMenu() {
+  if (myTimeout) clearTimeout(myTimeout);
+  var menu = {
+    "" : {title : "Decode:"},
+    "< Back" : Bangle.load
+  };
+  if (Object.keys(pins).length==0) Object.assign(menu, {"NO CARDS":""});
+  else for (let id in pins) {
+    let p=pins[id];
+    menu[id]=()=>{decode(p);};
+  }
+  menu["Add Card"]=addCard;
+  menu["Remove Card"]=removeCard;
+  g.clear();
+  E.showMenu(menu);
+}
+function decode(pin) {
+  showNumpad("Key:", function() {
+    if (key.length==0) mainMenu(); 
+    else {
+      var pinDecrypted="";
+      for (let n=0;n<pin.length;n++) {
+        pinDecrypted+=(10+Number(pin[n])-Number(key[n%key.length]))%10;
+      }
+      var showPin = new Layout ({
+        type:"v", c: [
+          {type:"txt", font:"30%", pad:1, fillx:1, filly:1, label:"PIN:"},
+          {type:"txt", font:100/pinDecrypted.length+"%", pad:1, fillx:1, filly:1, label: pinDecrypted},
+          {type:"btn", font:"30%", pad:1, fillx:1, filly:1, label:"OK", cb:l=>{mainMenu();}}
+        ], lazy:true});
+      g.clear();
+      showPin.render();
+      myTimeout = setTimeout(Bangle.load, 10000);
+    }
+  });
+}
+function showNumpad(text, callback) {
+  E.showMenu();
+  key="";
+  function addDigit(digit) {
+    key+=digit;
+    Bangle.buzz(20);
+    update();
+  }
+  function update() {
+    g.reset();
+    g.clearRect(0,0,g.getWidth(),23);
+    g.setFont("Vector:24").setFontAlign(1,0).drawString(text+key,g.getWidth(),12);
+  }
+  ds="12%";
+  var numPad = new Layout ({
+      type:"v", c: [{
+        type:"v", c: [
+          {type:"", height:24},
+          {type:"h",filly:1, c: [
+            {type:"btn", font:ds, width:58, label:"7", cb:l=>{addDigit("7");}},
+            {type:"btn", font:ds, width:58, label:"8", cb:l=>{addDigit("8");}},
+            {type:"btn", font:ds, width:58, label:"9", cb:l=>{addDigit("9");}}
+          ]},
+          {type:"h",filly:1, c: [
+            {type:"btn", font:ds, width:58, label:"4", cb:l=>{addDigit("4");}},
+            {type:"btn", font:ds, width:58, label:"5", cb:l=>{addDigit("5");}},
+            {type:"btn", font:ds, width:58, label:"6", cb:l=>{addDigit("6");}}
+          ]},
+          {type:"h",filly:1, c: [
+            {type:"btn", font:ds, width:58, label:"1", cb:l=>{addDigit("1");}},
+            {type:"btn", font:ds, width:58, label:"2", cb:l=>{addDigit("2");}},
+            {type:"btn", font:ds, width:58, label:"3", cb:l=>{addDigit("3");}}
+          ]},
+          {type:"h",filly:1, c: [
+            {type:"btn", font:ds, width:58, label:"0", cb:l=>{addDigit("0");}},
+            {type:"btn", font:ds, width:58, label:"C", cb:l=>{key=key.slice(0,-1); update();}},
+            {type:"btn", font:ds, width:58, id:"OK", label:"OK", cb:callback}
+          ]}
+        ]}
+      ], lazy:true});
+  g.clear();
+  numPad.render();  
+  update();
+}
+function removeCard() {
+  var menu = {
+    "" : {title : "select card"},
+    "< Back" : mainMenu
+  };
+  if (Object.keys(pins).length==0) Object.assign(menu, {"NO CARDS":""});
+  else for (let c in pins) {
+    let card=c;
+    menu[c]=()=>{
+      E.showMenu();
+      var confirmRemove = new Layout (
+        {type:"v", c: [
+          {type:"txt", font:"15%", pad:1, fillx:1, filly:1, label:"Delete"},
+          {type:"txt", font:"15%", pad:1, fillx:1, filly:1, label:card+"?"},
+          {type:"h", c: [
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, label: "YES", cb:l=>{
+              delete pins[card];          
+              require('Storage').writeJSON("pinsafe.json", pins);
+              mainMenu();
+            }},
+            {type:"btn", font:"15%", pad:1, fillx:1, filly:1, label: " NO", cb:l=>{mainMenu();}}
+          ]}
+        ], lazy:true});
+      g.clear();
+      confirmRemove.render();
+    };
+  }
+  E.showMenu(menu);
+}
+function addCard() {
+  var infoScreen = new Layout({
+    type:"v", c: [
+      {type:"txt", font:"10%", label:"Enter a name, PIN\nand key for your\ncard. The PIN will\nbe stored on your\ndevice in encrypted\nform.\nTap to continue!", cb:l=>{
+        require("textinput").input({text:""}).then(result => {
+          if (pins[result]!=undefined) {
+            E.showMenu();
+            var alreadyExists = new Layout (
+              {type:"v", c: [
+                {type:"txt", font:Math.min(15,100/result.length)+"%", pad:1, fillx:1, filly:1, label:result},
+                {type:"txt", font:"12%", pad:1, fillx:1, filly:1, label:"already exists."},
+                {type:"h", c: [
+                  {type:"btn", font:"10%", pad:1, fillx:1, filly:1, label: "REPLACE", cb:l=>{encodeCard(result);}},
+                  {type:"btn", font:"10%", pad:1, fillx:1, filly:1, label: "CANCEL", cb:l=>{mainMenu();}}
+                ]}
+              ], lazy:true});
+            g.clear();
+            alreadyExists.render();
+          } else 
+            encodeCard(result);
+        });
+      }}
+    ]
+  });
+  g.clear();
+  infoScreen.render();
+}
+function encodeCard(name) {
+  showNumpad("PIN:", function() {
+    if (key.length==0) mainMenu();
+    else {
+      var pin=key;
+      showNumpad("Key:", function() {
+        if (key.length==0) mainMenu(); 
+        else {
+          var pinEncrypted="";
+          for (let n=0;n<pin.length;n++) {
+            a=(10+Number(pin[n])+Number(key[n%key.length]))%10;
+            pinEncrypted+=a;
+          }
+          pins[name]=pinEncrypted;
+          require('Storage').writeJSON("pinsafe.json", pins);
+          mainMenu();
+        }
+      });
+    }
+  });
+}
+g.reset();
+Bangle.setUI();
+mainMenu();

apps/pinsafe/metadata.json

@@ -0,0 +1,16 @@
+{
+  "id": "pinsafe",
+  "name": "PIN safe",
+  "version": "0.01",
+  "description": "Store encrypted numerical PINs on your Watch.",
+  "icon": "app.png",
+  "tags": "tool",
+  "supports": ["BANGLEJS2"],
+  "readme": "README.md",
+  "storage": [
+    {"name":"pinsafe.app.js","url":"app.js"},
+    {"name":"pinsafe.img","url":"app-icon.js","evaluate":true}
+  ],
+  "data": [{"name":"pinsafe.json"}],
+  "dependencies": {"textinput":"type"}
+}