One-File-Tools/tools/hash-generator.html at main · praveenscience/One-File-Tools · 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>Hash Generator - One File Tools</title>
    <style>
      body {
        font-family: Arial, sans-serif;
        background: #111827;
        color: #fff;
        max-width: 900px;
        margin: auto;
        padding: 24px;
      }

      textarea,
      input {
        width: 100%;
        box-sizing: border-box;
      }

      textarea {
        height: 180px;
        padding: 10px;
        margin: 10px 0;
      }

      .row {
        display: flex;
        gap: 10px;
        align-items: center;
        margin: 10px 0;
      }

      .row label {
        width: 90px;
      }

      .row input {
        flex: 1;
        padding: 8px;
      }

      button {
        padding: 8px 12px;
        cursor: pointer;
      }
    </style>
  </head>

  <body>
    <h1>Hash Generator</h1>
    <p>SHA-1, SHA-256 and SHA-512 generator (client-side). MD5 placeholder.</p>

    <textarea id="textInput" placeholder="Type text..."></textarea>

    <div class="row">
      <input type="file" id="fileInput" />
      <label><input type="checkbox" id="upper" /> Uppercase</label>
    </div>

    <div class="row"><label>MD5</label><input id="md5" readonly placeholder="Not implemented" /><button onclick="copy('md5')">Copy</button></div>
    <div class="row"><label>SHA-1</label><input id="sha1" readonly /><button onclick="copy('sha1')">Copy</button></div>
    <div class="row"><label>SHA-256</label><input id="sha256" readonly /><button onclick="copy('sha256')">Copy</button></div>
    <div class="row"><label>SHA-512</label><input id="sha512" readonly /><button onclick="copy('sha512')">Copy</button></div>

    <script>
      const t = document.getElementById("textInput");
      const up = document.getElementById("upper");

      function hex(buf) {
        let h = [...new Uint8Array(buf)].map((x) => x.toString(16).padStart(2, "0")).join("");
        return up.checked ? h.toUpperCase() : h;
      }
      async function hash(algo, text) {
        return hex(await crypto.subtle.digest(algo, new TextEncoder().encode(text)));
      }
      async function update() {
        const v = t.value;
        if (!v) {
          sha1.value = sha256.value = sha512.value = md5.value = "";
          return;
        }
        sha1.value = await hash("SHA-1", v);
        sha256.value = await hash("SHA-256", v);
        sha512.value = await hash("SHA-512", v);
        md5.value = "Requires MD5 polyfill";
      }
      t.oninput = update;
      up.onchange = update;

      fileInput.onchange = async (e) => {
        const f = e.target.files[0];
        if (!f) return;
        t.value = await f.text();
        update();
      };

      function copy(id) {
        const el = document.getElementById(id);
        if (el.value) navigator.clipboard.writeText(el.value);
      }
    </script>
  </body>
</html>