Function validatePasswordHash

validatePasswordHash(
    password: ByteArray,
    key: ByteArray,
    extra?: ByteArray,
): Promise<ByteArray>
Validates a password against a stored hash using the Algorithm 2.B hash.
Parameters
- password: ByteArray
  The password to validate.
- key: ByteArray
  The stored key containing the hash (first 32 bytes) and validation salt (bytes 32-40).
- Optionalextra: ByteArray
  Extra data for owner password validation (user key).
Returns Promise<ByteArray>
A promise that resolves to the computed hash if validation succeeds.
Throws
Error if the password is invalid or salt/hash lengths are incorrect.
Example
```
try {
  await validatePasswordHash(password, storedKey)
  console.log('Password is valid')
} catch (e) {
  console.log('Invalid password')
}
```
- Defined in packages/pdf-lite/src/crypto/key-derivation/key-derivation-aes256.ts:111