import hashlib
import secrets


class PasswordHasher:
    """
    Класс для безопасного хэширования паролей с использованием соли.
    """

    def generate_salt(self, length: int = 16) -> str:
        return secrets.token_hex(length)

    def hash_password(self, password: str, salt: str) -> str:
        hasher = hashlib.sha256()
        hasher.update(salt.encode("utf-8") + password.encode("utf-8"))
        return hasher.hexdigest()

    def verify_password(self, password: str, salt: str, expected_hash: str) -> bool:
        return self.hash_password(password, salt) == expected_hash