using System;

namespace Org.BouncyCastle.Crypto.Parameters;

public class KeyParameter : ICipherParameters
{
	private readonly byte[] key;

	public KeyParameter(byte[] key)
	{
		if (key == null)
		{
			throw new ArgumentNullException("key");
		}
		this.key = (byte[])key.Clone();
	}

	public KeyParameter(byte[] key, int keyOff, int keyLen)
	{
		if (key == null)
		{
			throw new ArgumentNullException("key");
		}
		if (keyOff < 0 || keyOff > key.Length)
		{
			throw new ArgumentOutOfRangeException("keyOff");
		}
		if (keyLen < 0 || keyLen > key.Length - keyOff)
		{
			throw new ArgumentOutOfRangeException("keyLen");
		}
		this.key = new byte[keyLen];
		Array.Copy(key, keyOff, this.key, 0, keyLen);
	}

	public byte[] GetKey()
	{
		return (byte[])key.Clone();
	}
}