def get_timestamp_ms():
    """타임스탬프 생성"""
    import time
    return round(time.time() * 1000)

def hash_password(password: str) -> str:
    """비밀번호 암호화"""
    import bcrypt
    
    if not password:
        raise ValueError("비밀번호는 비어있을 수 없습니다.")
    
    hashed = bcrypt.hashpw(password.encode("utf-8"), bcrypt.gensalt())
    return hashed.decode("utf-8")

def verify_password(password: str, hashed_password: str) -> bool:
    import bcrypt
    
    """비밀번호 검증"""
    if not password or not hashed_password:
        return False
    
    try:
        return bcrypt.checkpw(
            password.encode("utf-8"),
            hashed_password.encode("utf-8")
        )
    except (ValueError, AttributeError):
        return False