steganography/index.html at main · akingry/steganography · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Kingry Tools: Steganography (Rich Paste)</title>
<style>
  body { font-family: Arial, sans-serif; margin: 20px; background: #f0f0f0; }
  h1 { text-align: center; }
  .container { display: flex; flex-wrap: wrap; justify-content: center; gap: 40px; }
  .section { background: #fff; padding: 20px; border-radius: 8px; box-shadow: 0 0 10px rgba(0,0,0,0.1); width: 360px; }
  .editor {
    width: 100%; min-height: 200px; max-height: 60vh;
    border: 1px solid #ccc; border-radius: 4px;
    padding: 8px; margin-top: 10px;
    overflow-y: auto; background: #fff;
  }
  .editor:empty:before { content: attr(data-placeholder); color: #888; }
  input, button { width: 100%; padding: 8px; margin-top: 8px; }
  canvas { display: none; }
  #byteInfo { margin-top: 5px; font-size: 14px; }
  img.preview { display: none; margin: 10px auto; max-width: 100%; cursor: pointer; }
  .drop-zone {
    border: 2px dashed #888;
    border-radius: 6px;
    padding: 12px;
    text-align: center;
    color: #555;
    margin-top: 10px;
    cursor: pointer;
    transition: background-color 0.2s;
  }
  .drop-zone.dragover { background-color: #cce5ff; border-color: #007bff; }
</style>
</head>
<body>
<h1>Kingry Tools: Steganography (Rich Paste)</h1>
<div class="container">
  <div class="section">
    <h2>Hide HTML</h2>
    <div class="drop-zone" id="dropZone">Drop cover image here or click to select</div>
    <input type="file" id="coverInput" accept="image/*" style="display:none">
    <img id="sourcePreview" class="preview">
    <div id="hideEditor" class="editor" contenteditable="true" data-placeholder="Paste rich content or images here..."></div>
    <div id="byteInfo">Bytes: 0</div>
    <input type="password" id="hidePassword" placeholder="Password (optional)">
    <button id="hideButton" onclick="hideText()" disabled>Hide Text</button>
    <div id="resultContainer" style="text-align:center;">
      <h3>Result Image</h3>
      <img id="resultImage" class="preview">
    </div>
  </div>

  <div class="section">
    <h2>Extract HTML</h2>
    <input type="file" id="stegoInput" accept="image/*">
    <img id="stegoPreview" class="preview">
    <input type="password" id="extractPassword" placeholder="Password (if used)">
    <button id="extractButton" onclick="extractText()" disabled>Extract Text</button>
    <div id="extractEditor" class="editor" contenteditable="false"></div>
  </div>
</div>
<canvas id="canvas"></canvas>
<script src="https://cdn.jsdelivr.net/npm/lz-string@1.4.4/libs/lz-string.min.js"></script>
<script>
let maxBytes = 0;
const hideEditor = document.getElementById('hideEditor');
const extractEditor = document.getElementById('extractEditor');

hideEditor.addEventListener('paste', e => {
  const items = (e.clipboardData || e.originalEvent.clipboardData).items;
  for (let item of items) {
    if (item.kind === 'file' && item.type.startsWith('image/')) {
      e.preventDefault();
      const blob = item.getAsFile();
      const reader = new FileReader();
      reader.onload = ev => document.execCommand('insertImage', false, ev.target.result);
      reader.readAsDataURL(blob);
    }
  }
  setTimeout(updateByteInfo, 50);
});

hideEditor.addEventListener('input', updateByteInfo);

const dropZone = document.getElementById('dropZone');
dropZone.addEventListener('click', () => coverInput.click());
dropZone.addEventListener('dragover', e => { e.preventDefault(); dropZone.classList.add('dragover'); });
dropZone.addEventListener('dragleave', e => { e.preventDefault(); dropZone.classList.remove('dragover'); });
dropZone.addEventListener('drop', e => {
  e.preventDefault(); dropZone.classList.remove('dragover');
  coverInput.files = e.dataTransfer.files;
  handleCoverImage();
});

const coverInput = document.getElementById('coverInput');
coverInput.addEventListener('change', handleCoverImage);
function handleCoverImage() {
  const file = coverInput.files[0]; if (!file) return;
  const reader = new FileReader(); reader.onload = e => {
    const img = new Image(); img.onload = () => {
      maxBytes = Math.floor((img.width*img.height*3)/8)*3/4;
      updateByteInfo();
    };
    img.src = e.target.result;
    sourcePreview.src = e.target.result;
    sourcePreview.style.display = 'block';
  };
  reader.readAsDataURL(file);
}

const stegoInput = document.getElementById('stegoInput');
stegoInput.addEventListener('change', handleStegoImage);
function handleStegoImage() {
  const file = stegoInput.files[0];
  const preview = document.getElementById('stegoPreview');
  if (!file) { preview.style.display='none'; extractButton.disabled=true; return; }
  const reader = new FileReader();
  reader.onload = e => {
    preview.src = e.target.result;
    preview.style.display = 'block';
    extractButton.disabled = false;
  };
  reader.readAsDataURL(file);
}

function updateByteInfo() {
  const raw = hideEditor.innerHTML;
  const used = new TextEncoder().encode(LZString.compressToUTF16(raw)).length;
  byteInfo.textContent=`Bytes: ${used} / ${maxBytes}`;
  byteInfo.style.color = used>maxBytes?'red':'black';
  hideButton.disabled = !(used>0 && used<=maxBytes && coverInput.files.length);
}

function xorEncryptDecrypt(data,key){const k=new TextEncoder().encode(key);return data.map((b,i)=>b^k[i%k.length]);}
function intToBinArray(n,bits){return Array.from({length:bits},(_,i)=>(n>>(bits-i-1))&1);}
function binArrayToInt(arr){return arr.reduce((acc,b)=>acc<<1|b,0);}

function hideText(){
  const file=coverInput.files[0]; const raw=hideEditor.innerHTML; const pwd=hidePassword.value;
  if(!file||!raw) return alert('Select cover image & add content.');
  const msg=LZString.compressToUTF16(raw);
  const reader = new FileReader(); reader.onload = e => {
    const img = new Image(); img.onload = () => {
      const canvas = document.getElementById('canvas'); canvas.width = img.width; canvas.height = img.height;
      const ctx = canvas.getContext('2d'); ctx.drawImage(img, 0, 0);
      let bytes = new TextEncoder().encode(msg);
      if (pwd) {
        const enc = xorEncryptDecrypt(bytes, pwd);
        let binStr = '';
        enc.forEach(b => binStr += String.fromCharCode(b));
        bytes = new TextEncoder().encode(btoa(binStr));
      }
      const pixels = ctx.getImageData(0,0, img.width, img.height).data;
      const bits = [...intToBinArray(bytes.length, 32)];
      bytes.forEach(b => bits.push(...intToBinArray(b, 8)));
      if (bits.length > pixels.length / 4 * 3) return alert('Payload too large.');
      const imgData = ctx.getImageData(0, 0, img.width, img.height);
      const p = imgData.data;
      let idx = 0;
      for (let i = 0; i < p.length && idx < bits.length; i += 4) {
        p[i] = (p[i] & ~1) | bits[idx++];
        if (idx < bits.length) p[i+1] = (p[i+1] & ~1) | bits[idx++];
        if (idx < bits.length) p[i+2] = (p[i+2] & ~1) | bits[idx++];
      }
      ctx.putImageData(imgData, 0, 0);
      const url = canvas.toDataURL('image/png');
      resultImage.src = url;
      resultImage.style.display = 'block';
      resultImage.onclick = () => window.open(url,'_blank');
    };
    img.src = e.target.result;
  };
  reader.readAsDataURL(file);
}

function extractText(){
  const file=stegoInput.files[0]; const pwd=extractPassword.value;
  if(!file) return alert('Select a stego image.');
  const reader=new FileReader(); reader.onload=e=>{
    const img=new Image(); img.onload=()=>{
      const c=document.getElementById('canvas'); c.width=img.width; c.height=img.height;
      const ctx=c.getContext('2d'); ctx.drawImage(img,0,0);
      const data=ctx.getImageData(0,0,img.width,img.height).data;
      const bits=[]; for(let i=0;i<data.length;i+=4)bits.push(data[i]&1,data[i+1]&1,data[i+2]&1);
      const len=binArrayToInt(bits.slice(0,32)); const chunk=bits.slice(32,32+len*8);
      const bytes=[]; for(let i=0;i<chunk.length;i+=8)bytes.push(binArrayToInt(chunk.slice(i,i+8)));
      let extracted=new Uint8Array(bytes);
      try{
        let str;
        if(pwd){const binStr = atob(new TextDecoder().decode(extracted)); const rawBytes = new Uint8Array([...binStr].map(c=>c.charCodeAt(0))); str=new TextDecoder().decode(xorEncryptDecrypt(rawBytes, pwd));}
        else str=new TextDecoder().decode(extracted);
        extractEditor.innerHTML = LZString.decompressFromUTF16(str);
      }catch{alert('Decoding failed.');}
    };
    img.src = e.target.result;
  };
  reader.readAsDataURL(file);
}
</script>
</body>
</html>