INNER CODE UNIT · JavaScript

sha256Hex

agent-sh/agentsys · lib/binary/index.js:254

function sha256Hex(buf) {
  return crypto.createHash('sha256').update(buf).digest('hex');
}

/**
 * Verify a downloaded buffer against an expected hex digest.
 * Throws with a security-focused message on mismatch.
 * @param {Buffer} buf
 * @param {string} expectedHex
 * @param {string} filename user-facing name for the error message
 */
function verifySha256(buf, expectedHex, filename) {
  const expected = String(expectedHex || '').toLowerCase();
  const actual = sha256Hex(buf);
  if (expected !== actual) {
    throw new Error(
      'SHA-256 verification failed for ' + filename + ': ' +
      'expected ' + expected + ', got ' + actual + '. ' +

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