HashedPassword.fromCombined constructor

HashedPassword.fromCombined(String combined)

Parses a combined string produced by PasswordHasher.hash.

Use this to reconstruct a HashedPassword from a value you read back from Firestore before passing it to PasswordHasher.verify.

Implementation

factory HashedPassword.fromCombined(String combined) {
  final parts = combined.split(':');
  if (parts.length != 3) {
    throw ArgumentError(
      'Invalid HashedPassword format. '
      'Expected "iterations:saltBase64:hashBase64", got: "$combined"',
    );
  }
  final iterations = int.tryParse(parts[0]);
  if (iterations == null) {
    throw ArgumentError(
        'Iteration count is not a valid integer: ${parts[0]}');
  }
  return HashedPassword.create(
    iterations: iterations,
    salt: parts[1],
    hash: parts[2],
    combined: combined,
  );
}