edge-core-js/lib/util/crypto/verify.js

Edge account & wallet management library

/**
 * Compares two byte arrays without data-dependent branches.
 * Returns true if they match.
 */
export function verifyData(a, b) {
  const length = a.length
  if (length !== b.length) return false

  let out = 0
  for (let i = 0; i < length; ++i) out |= a[i] ^ b[i]
  return out === 0
}