Wikidot Community

[[html]]
<style>
input,
button,
a,
h3 {
   font-family: proxima-nova, sans-serif;
}

button {
   transition: background-color .3s cubic-bezier(.4,0,.2,1),color .3s cubic-bezier(.4,0,.2,1);
   border: .125rem solid rgba(48, 48, 52, 1);
   border-radius: .25rem;
   background-color: rgba(140, 136, 126, 1);
   padding: .25rem;
   color: rgb(237, 233, 223);
   margin: 0 2px;
}

button:hover {
   border: .125rem solid rgba(140, 136, 126, 1);
   background-color: rgba(48, 48, 52, 1);
}

h3 {
   margin: .5em 0 .4em;
   padding: 0;
   letter-spacing: .063rem;
}

a {
   text-decoration: none;
   color: rgb(230, 23, 68);
}

a:hover {
   text-decoration: underline;
}

input {
   font-size: 100%;
}
</style>
<meta http-equiv="content-type" content="text/html;charset=UTF-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
<div id="wrapper" style="background-color: #efefef;">
<div style="margin: auto; display: table;">
<input id="passwordInput"></input><button id="passwordButton">Enter</button>
</div>
<br />
<h3 style="text-align: center; opacity: 0;" id="wrongPassword">Wrong Password</h3>
</div>
<script>

    function sha256(ascii) {
      function rightRotate(value, amount) {
        return (value >>> amount) | (value << (32 - amount));
      }

      var mathPow = Math.pow;
      var maxWord = mathPow(2, 32);
      var lengthProperty = "length";
      var i, j;
      var result = "";

      var words = [];
      var asciiBitLength = ascii[lengthProperty] * 8;

      var hash = sha256.h = sha256.h || [];
      var k = sha256.k = sha256.k || [];
      var primeCounter = k[lengthProperty];

      var isComposite = {};
      for (var candidate = 2; primeCounter < 64; candidate++) {
        if (!isComposite[candidate]) {
          for (i = 0; i < 313; i += candidate) {
            isComposite[i] = candidate;
          }
          hash[primeCounter] = (mathPow(candidate, .5) * maxWord) | 0;
          k[primeCounter++] = (mathPow(candidate, 1 / 3) * maxWord) | 0;
        }
      }

      ascii += "\x80";

      while (ascii[lengthProperty] % 64 - 56) ascii += "\x00";

      ascii += String.fromCharCode.apply(String, [0, 0, 0, 0].concat(asciiBitLength >>> 29));
      ascii += String.fromCharCode.apply(String, [0, 0, 0].concat((asciiBitLength << 3) & maxWord));

      for (i = 0; i < ascii[lengthProperty]; i += 4) {
        words[i >> 2] = ascii.charCodeAt(i) << 24 | ascii.charCodeAt(i + 1) << 16 | ascii.charCodeAt(i + 2) << 8 | ascii.charCodeAt(i + 3);
      }

      var j, t1, t2, wordCopy, state = hash.slice(0);

      for (i = 0; i < words[lengthProperty]; i += 16) {
        j = 0;
        state = hash.slice(0);
        for (; j < 64; j++) {
          wordCopy = words[i + j];
          if (j < 16) {
            t1 = wordCopy;
            t1 = (t1 >>> 2) ^ (t1 >>> 13) ^ (t1 >>> 22);
            t2 = (wordCopy >>> 6) ^ (wordCopy >>> 11) ^ (wordCopy >>> 25);
            wordCopy = (wordCopy >>> 7) ^ (wordCopy >>> 18) ^ (wordCopy >>> 3);
            wordCopy = (wordCopy + t2) | 0;
            wordCopy = (wordCopy + state[j % 8]) | 0;
            wordCopy |= 0;
            state[j % 8] = (wordCopy + t1) | 0;
          } else {
            wordCopy = (state[(j + 1) % 8] + wordCopy) | 0;
            wordCopy = (wordCopy + state[(j + 6) % 8]) | 0;
            wordCopy = (wordCopy + state[(j + 3) % 8]) | 0;
            t1 = wordCopy;
            t1 = (t1 >>> 2) ^ (t1 >>> 13) ^ (t1 >>> 22);
            t2 = (wordCopy >>> 6) ^ (wordCopy >>> 11) ^ (wordCopy >>> 25);
            wordCopy = (wordCopy >>> 7) ^ (wordCopy >>> 18) ^ (wordCopy >>> 3);
            wordCopy = (wordCopy + t2) | 0;
            wordCopy = (wordCopy + state[j % 8]) | 0;
            state[j % 8] = (wordCopy + t1) | 0;
          }
        }

        for (j = 0; j < 8; j++) {
          hash[j] = (hash[j] + state[j]) | 0;
        }
      }

      for (i = 0; i < 8; i++) {
        result += ((hash[i] >>> 28) & 0xf).toString(16) +
          ((hash[i] >>> 24) & 0xf).toString(16) +
          ((hash[i] >>> 20) & 0xf).toString(16) +
          ((hash[i] >>> 16) & 0xf).toString(16) +
          ((hash[i] >>> 12) & 0xf).toString(16) +
          ((hash[i] >>> 8) & 0xf).toString(16) +
          ((hash[i] >>> 4) & 0xf).toString(16) +
          (hash[i] & 0xf).toString(16);
      }

      sha256.h = [];
      sha256.k = [];
      return result;
    }

    document.getElementById("passwordButton").addEventListener("click", function() {
        const inputPassword = document.getElementById("passwordInput").value.toLowerCase();
        const hashedPassword = sha256(inputPassword);

        const expectedHash = "bc67437ffa1d2a66ebd148c73a967508bfe0880bd2c1b18a91e8b39bf2de1e5c";
        if (hashedPassword === expectedHash) {
            document.getElementById("wrapper").innerHTML = "";
        } else {
            document.getElementById("wrongPassword").style.opacity = 1;
        }
    document.getElementById("passwordInput").value = "";
    });
    </script>

[[/html]]