Method run has a Cognitive Complexity of 19 (exceeds 5 allowed). Consider refactoring.

Open

    public void run()
    {
        try
        {
            while (true)

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File DES.java has 274 lines of code (exceeds 250 allowed). Consider refactoring.

Open

package com.trilead.ssh2.crypto.cipher;

/*
 * This file is based on the 3DES implementation from the Bouncy Castle Crypto package.

Method close has 63 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public void close(Throwable cause, boolean useDisconnectPacket)
    {
        if (!useDisconnectPacket)
        {
            /* OK, hard shutdown - do not aquire the semaphore,

Method run has 62 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public void run()
    {
        try
        {
            cm.registerThread(this);

Method msgChannelRequest has a Cognitive Complexity of 18 (exceeds 5 allowed). Consider refactoring.

Open

    public void msgChannelRequest(byte[] msg, int msglen) throws IOException
    {
        TypesReader tr = new TypesReader(msg, 0, msglen);

        tr.readByte(); // skip packet type

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Method connect has a Cognitive Complexity of 18 (exceeds 5 allowed). Consider refactoring.

Open

    public synchronized ConnectionInfo connect(ServerHostKeyVerifier verifier, int connectTimeout, int kexTimeout)
            throws IOException
    {
        final class TimeoutState
        {

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Method receiveFiles has 60 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private void receiveFiles(Session sess, String[] files, String target) throws IOException
    {
        byte[] buffer = new byte[8192];

        OutputStream os = new BufferedOutputStream(sess.getStdin(), 512);

KnownHosts has 22 methods (exceeds 20 allowed). Consider refactoring.

Open

public class KnownHosts
{
    public static final int HOSTKEY_IS_OK = 0;
    public static final int HOSTKEY_IS_NEW = 1;
    public static final int HOSTKEY_HAS_CHANGED = 2;

Method msgChannelRequest has 57 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public void msgChannelRequest(byte[] msg, int msglen) throws IOException
    {
        TypesReader tr = new TypesReader(msg, 0, msglen);

        tr.readByte(); // skip packet type

Method readAttrs has a Cognitive Complexity of 17 (exceeds 5 allowed). Consider refactoring.

Open

    private SFTPv3FileAttributes readAttrs(TypesReader tr) throws IOException
    {
        /*
         * uint32   flags
         * uint64   size           present only if flag SSH_FILEXFER_ATTR_SIZE

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Method initialize has a Cognitive Complexity of 17 (exceeds 5 allowed). Consider refactoring.

Open

    public void initialize(CryptoWishList cwl, ServerHostKeyVerifier verifier, DHGexParameters dhgex,
            int connectTimeout, SecureRandom rnd, ProxyData proxyData) throws IOException
    {
        /* First, establish the TCP connection to the SSH-2 server */

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Method sendFiles has a Cognitive Complexity of 17 (exceeds 5 allowed). Consider refactoring.

Open

    private void sendFiles(Session sess, String[] files, String[] remoteFiles, String mode) throws IOException
    {
        byte[] buffer = new byte[8192];

        OutputStream os = new BufferedOutputStream(sess.getStdin(), 40000);

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File TransportConnection.java has 257 lines of code (exceeds 250 allowed). Consider refactoring.

Open

package com.trilead.ssh2.transport;

import java.io.IOException;
import java.io.InputStream;

ECDSASHA2Verify has 21 methods (exceeds 20 allowed). Consider refactoring.

Open

public abstract class ECDSASHA2Verify implements SSHSignature {
    private static final Logger log = Logger.getLogger(ECDSASHA2Verify.class);

    public static final String ECDSA_SHA2_PREFIX = "ecdsa-sha2-";

Method mergeKexParameters has 53 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private NegotiatedParameters mergeKexParameters(KexParameters client, KexParameters server)
    {
        NegotiatedParameters np = new NegotiatedParameters();

        try

Method sendFiles has 53 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private void sendFiles(Session sess, String[] files, String[] remoteFiles, String mode) throws IOException
    {
        byte[] buffer = new byte[8192];

        OutputStream os = new BufferedOutputStream(sess.getStdin(), 40000);

Method sendData has 52 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    public void sendData(Channel c, byte[] buffer, int pos, int len) throws IOException
    {
        while (len > 0)
        {
            int thislen = 0;

Method processSignRequest has 51 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    private void processSignRequest(TypesReader tr)
    {
        try
        {
            if (failWhenLocked())

Consider simplifying this complex logical expression.

Open

            if (kxs.np.kex_algo.equals(Curve25519Exchange.NAME)
                    || kxs.np.kex_algo.equals(Curve25519Exchange.ALT_NAME)
                    || kxs.np.kex_algo.equals("ecdh-sha2-nistp521")
                    || kxs.np.kex_algo.equals("ecdh-sha2-nistp384")
                    || kxs.np.kex_algo.equals("ecdh-sha2-nistp256")

Consider simplifying this complex logical expression.

Open

        if (kxs.np.kex_algo.equals("diffie-hellman-group1-sha1")
                || kxs.np.kex_algo.equals("diffie-hellman-group14-sha1")
                || kxs.np.kex_algo.equals("diffie-hellman-group14-sha256")
                || kxs.np.kex_algo.equals("diffie-hellman-group16-sha512")
                || kxs.np.kex_algo.equals("diffie-hellman-group18-sha512")