indiko/index.html at master · ferfebles/indiko · GitHub

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<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title>indiko</title>
        <meta name="viewport" content="width=device-width, initial-scale=1">
        <style>
         html {text-align: center; zoom: 160%;}
         p {font-size: 80%;}
        </style>
    </head>
    <body>
        <p><a href="https://github.com/ferfebles/indiko"
              style='font-size:150%'>indiko</a><br>the amnesic pwd manager</p>

        <div>
            <input type="password" id="mstrpwd"
                   onkeyup="enableWithLength(this, 16, 'account')"
                   placeholder="m4ster pwd (size>15)" autofocus disabled>
        </div>
        <div>
            <input type="text" id="account"
                   onkeyup="enableWithLength(this, 4, 'dat3s')"
                   placeholder="anyaccount@eg.gmail" disabled>
        </div>

        <br>

        <div id="dat3s">
            <div>
                <button onclick="updateLabel(this)" disabled
                        id="last_year" style='color: grey'>1969</button>
                <button onclick="updateLabel(this)" disabled
                        id="current_year">1970</button>
                <button onclick="updateLabel(this)" disabled
                        id="next_year" style='color: grey'>1971</button>
            </div>
            <div>
                <button onclick="updateLabel(this)" disabled id="q1">Q1</button>
                <button onclick="updateLabel(this)" disabled id="q2">Q2</button>
                <button onclick="updateLabel(this)" disabled id="q3">Q3</button>
                <button onclick="updateLabel(this)" disabled id="q4">Q4</button>
            </div>
        </div>

        <br>

        <div id="notice" style='font-size:75%'>enable javascript, please</div>
        <div id="pwd" style='font-size:45%'></div>

        <script>
         var currentYear = (new Date()).getFullYear()

         // Base64 encode
         function encode64 (buff) {
             return btoa(new Uint8Array(buff)
                 .reduce((s, b) => s + String.fromCharCode(b), ''))
         }

         function selectChar (fromString, withChar) {
             return fromString[(withChar.charCodeAt() % fromString.length)]
         }

         function fulfilPWDRequirements (pwd) {
             var lowerCase = 'abcdefghijklmnopqrstuvwxyz'
             var upperCase = lowerCase.toUpperCase()
             var digits = '0123456789'
             var symbols = '!@#%&=_:,;<>$|.+/'

             return selectChar(lowerCase, pwd[0]) +
                    selectChar(upperCase, pwd[1]) +
                    selectChar(digits, pwd[2]) +
                    selectChar(symbols, pwd[3]) +
                    pwd.substring(4)
         }

         function str2ArrBuff (string) {
             var encoder = new TextEncoder('utf-8')
             return encoder.encode(string)
         }

         function enableWithLength (e, minLength, id) {
             var i
             var newDisabledValue = (e.value.length < minLength)
             var elements = document.getElementById(id).querySelectorAll('*')

             document.getElementById(id).disabled = newDisabledValue
             for (i = 0; i < elements.length; i++) {
                 elements[i].disabled = newDisabledValue
             }
         }

         function copyPBKDF2 (rawKey, salt, button) {
             crypto.subtle.importKey('raw', str2ArrBuff(rawKey),
                                     'PBKDF2', false, ['deriveBits'])
                   .then(baseKey => {
                       return crypto.subtle.deriveBits(
                           {name: 'PBKDF2',
                            salt: str2ArrBuff(salt),
                            iterations: 100000,
                            hash: 'sha-512'},
                           baseKey,
                           192)
                   })
                   .then(result => {
                       var pwd = fulfilPWDRequirements(encode64(result))

                       if (navigator.clipboard) {
                           navigator.clipboard.writeText(pwd).then(function () {
                               document.getElementById('notice').textContent =
                                   'pwd for ' + button + ' copied'
                           })
                       } else {
                           document.getElementById('notice').textContent =
                               'pwd for ' + button
                           document.getElementById('pwd').textContent = pwd
                       }
                   })
                   .catch(err => { alert('Key derivation failed: ' + err.message) })
         }

         function updateLabel (e) {
             if (e.id === 'last_year') { currentYear-- }
             if (e.id === 'next_year') { currentYear++ }
             copyPBKDF2((document.getElementById('mstrpwd').value),
                        (document.getElementById('account').value +
                         e.textContent + currentYear.toString()),
                        e.textContent)
             updateDateButtons()
         }

         function updateDateButtons () {
             document.getElementById('last_year').textContent =
                 (currentYear - 1).toString()
             document.getElementById('current_year').textContent =
                 currentYear.toString()
             document.getElementById('next_year').textContent =
                 (currentYear + 1).toString()
         }

         function initChecks () {
             var noticeHtml = ''

             document.getElementById('mstrpwd').disabled = false
             updateDateButtons()
             if (!(window.crypto && crypto.subtle)) {
                 noticeHtml = 'Web Crypto <a href="https://github.com/ferfebles/indiko#but">not supported</a>!'
             } else if (!(navigator.clipboard)) {
                 noticeHtml = 'Clipboard <a href="https://github.com/ferfebles/indiko#but">not supported</a>!'
             }
             document.getElementById('notice').innerHTML = noticeHtml
         }

         initChecks()
        </script>
    </body>
</html>