How to Tune scrypt Parameters in Python

import hashlib

def tune_scrypt_params(target_time=0.1, base_n=2**14, base_r=8, base_p=1):
    """Mock tuning of scrypt params based on target time."""
    n, r, p = base_n, base_r, base_p
    iterations = 0
    
    for _ in range(5):  # simple mock adjustment loop
        iterations += 1
        mock_time = 0.05 + (n / 2**20) * 0.1  # simulated time
        if mock_time < target_time:
            n *= 2  # increase work factor
        elif mock_time > target_time * 1.5:
            n //= 2  # decrease work factor
        else:
            break
    
    # generate a mock hash with final params
    password = b"mock-password"
    salt = b"mock-salt"
    derived = hashlib.scrypt(
        password, salt=salt, n=n, r=r, p=p, dklen=32
    )
    
    return {
        "iterations": iterations,
        "n": n,
        "r": r,
        "p": p,
        "mock_time": mock_time,
        "derived_key_hex": derived.hex()[:16],
    }

if __name__ == "__main__":
    result = tune_scrypt_params(target_time=0.1)
    for key, value in result.items():
        print(f"{key}: {value}")