kev/PrivateKeyboardAddon
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increased time and reverted back to per page load

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This commit is contained in:
Kevin F 2021-08-10 05:57:27 +00:00
parent fbb6e804cf
commit 9485d43800
3 changed files with 10 additions and 10 deletions
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2
README.md
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@ -4,7 +4,7 @@ Did you know that websites can identify you based on the way you type?
There are spy libraries that can determine how long keys are held down and the time between keys. This is apparently good enough for spying that it can be used as a form of biometric authentication, by companies like Keytrac and TypingDNA. According to TypingDNA, their software has been used for test proctoring, and in banking apps. There are spy libraries that can determine how long keys are held down and the time between keys. This is apparently good enough for spying that it can be used as a form of biometric authentication, by companies like Keytrac and TypingDNA. According to TypingDNA, their software has been used for test proctoring, and in banking apps.
This addon was created to skew the key press timing by limiting the speed of presses. The speed is changed randomly on each page load, with a max of 200ms. This addon was created to skew the key press timing by limiting the speed of presses. The speed is changed randomly on each page load, with a min of 150ms and a max of 300ms.
It uses a less than ideal thread locking solution, as simply buffering text does not stop event listeners from spies. It uses a less than ideal thread locking solution, as simply buffering text does not stop event listeners from spies.

16
background.js
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@ -19,8 +19,8 @@
const defaultHosts = "<all_urls>"; const defaultHosts = "<all_urls>";
let appCode = function (){ let appCode = function (){
const maxValue = 150 let minValue = 75
const minValue = 25 let maxValue = 150
let mainKeyboardPrivacy = function(){ let mainKeyboardPrivacy = function(){
@ -36,6 +36,8 @@ let appCode = function (){
} }
return buf[0]; return buf[0];
} }
let up = getRandNum()
let down = getRandNum()
console.debug('Protecting keyboard biometrics on ' + document.location.href) console.debug('Protecting keyboard biometrics on ' + document.location.href)
@ -56,7 +58,7 @@ let appCode = function (){
if (e.key.startsWith('Arrow') || e.key.startsWith('Page')){ if (e.key.startsWith('Arrow') || e.key.startsWith('Page')){
return true; return true;
} }
pausecomp(getRandNum()); pausecomp(up);
return true; return true;
}, ) }, )
@ -64,7 +66,7 @@ let appCode = function (){
if (e.key.startsWith('Arrow') || e.key.startsWith('Page')){ if (e.key.startsWith('Arrow') || e.key.startsWith('Page')){
return true; return true;
} }
pausecomp(getRandNum()); pausecomp(down); we
return true; return true;
}) })
@ -72,7 +74,7 @@ let appCode = function (){
}, 100) }, 100)
} }
function shouldRunKeyboardPrivacy(value){ function shouldRunKeyboardPrivacy(value){
if (typeof value.keyboardprivacywhitelist == undefined){ if (typeof value.keyboardprivacywhitelist === 'undefined'){
mainKeyboardPrivacy() mainKeyboardPrivacy()
return return
} }
@ -85,11 +87,10 @@ let appCode = function (){
} }
mainKeyboardPrivacy() mainKeyboardPrivacy()
} }
function noKeyboardPrivacySettings(){ function noKeyboardPrivacySettings(value){
mainKeyboardPrivacy() mainKeyboardPrivacy()
} }
let whitelist = browser.storage.sync.get("keyboardprivacywhitelist"); let whitelist = browser.storage.sync.get("keyboardprivacywhitelist");
whitelist.then(shouldRunKeyboardPrivacy, noKeyboardPrivacySettings) whitelist.then(shouldRunKeyboardPrivacy, noKeyboardPrivacySettings)
@ -99,7 +100,6 @@ const dummyStr = ''
let defaultCode = dummyStr + appCode; let defaultCode = dummyStr + appCode;
defaultCode = defaultCode.replace('function (){', 'function keyboardPrivacy(){') defaultCode = defaultCode.replace('function (){', 'function keyboardPrivacy(){')
console.debug(defaultCode)
async function register(hosts, code) { async function register(hosts, code) {

2
manifest.json
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@ -2,7 +2,7 @@
"manifest_version": 2, "manifest_version": 2,
"name": "Private Keyboard", "name": "Private Keyboard",
"version": "1.4", "version": "1.5",
"description": "Protect against keyboard biometrics", "description": "Protect against keyboard biometrics",