import com.trilead.ssh2.crypto.cipher.NullCipher; //导入依赖的package包/类
public void changeSendCipher(BlockCipher bc, MAC mac)
{
	if ((bc instanceof NullCipher) == false)
	{
		/* Only use zero byte padding for the first few packets */
		useRandomPadding = true;
		/* Once we start encrypting, there is no way back */
	}

	cos.changeCipher(bc);
	send_mac = mac;
	send_mac_buffer = (mac != null) ? new byte[mac.size()] : null;
	send_padd_blocksize = bc.getBlockSize();
	if (send_padd_blocksize < 8)
		send_padd_blocksize = 8;
}
 

import com.trilead.ssh2.crypto.cipher.NullCipher; //导入依赖的package包/类
public void changeSendCipher(BlockCipher bc, MAC mac) {
	if ((bc instanceof NullCipher) == false) {
		/* Only use zero byte padding for the first few packets */
		useRandomPadding = true;
		/* Once we start encrypting, there is no way back */
	}

	cos.changeCipher(bc);
	send_mac = mac;
	send_mac_buffer = (mac != null) ? new byte[mac.size()] : null;
	send_padd_blocksize = bc.getBlockSize();
	if (send_padd_blocksize < 8)
		send_padd_blocksize = 8;
}
 

import com.trilead.ssh2.crypto.cipher.NullCipher; //导入依赖的package包/类
public TransportConnection(InputStream is, OutputStream os, SecureRandom rnd)
{
	this.cis = new CipherInputStream(new NullCipher(), is);
	this.cos = new CipherOutputStream(new NullCipher(), os);
	this.rnd = rnd;
}
 

import com.trilead.ssh2.crypto.cipher.NullCipher; //导入依赖的package包/类
public TransportConnection(InputStream is, OutputStream os, SecureRandom rnd) {
	this.cis = new CipherInputStream(new NullCipher(), is);
	this.cos = new CipherOutputStream(new NullCipher(), os);
	this.rnd = rnd;
}