是否可以使用 Javascript 计算文件的 SHA1 ID？

const fileInput = document.getElementById('file-input');

fileInput.addEventListener('change', async (event) => {
  const file = event.target.files[0];
  const buffer = await readFileAsArrayBuffer(file);
  const hash = await calculateSHA1(buffer);
  console.log(hash);
});

function readFileAsArrayBuffer(file) {
  return new Promise((resolve, reject) => {
    const reader = new FileReader();
    reader.onload = (event) => {
      resolve(event.target.result);
    };
    reader.onerror = (error) => {
      reject(error);
    };
    reader.readAsArrayBuffer(file);
  });
}

function calculateSHA1(buffer) {
  return new Promise((resolve, reject) => {
    crypto.subtle.digest('SHA-1', buffer)
      .then((hash) => {
        const hashArray = Array.from(new Uint8Array(hash));
        const hashHex = hashArray.map((b) => b.toString(16).padStart(2, '0')).join('');
        resolve(hashHex);
      })
      .catch((error) => {
        reject(error);
      });
  });
}