public void run()
{
thread=this;
byte[] foo;
Buffer buf=new Buffer();
Packet packet=new Packet(buf);
int i=0;
Channel channel;
int[] start=new int[1];
int[] length=new int[1];
KeyExchange kex=null;
try
{
while(_isConnected &&
thread!=null)
{
buf=read(buf);
int msgType=buf.buffer[5]&0xff;
// if(msgType!=94)
//System.Console.WriteLine("read: 94 ? "+msgType);
if(kex!=null && kex.getState()==msgType)
{
bool result=kex.next(buf);
if(!result)
{
throw new JSchException("verify: "+result);
}
continue;
}
switch(msgType)
{
case SSH_MSG_KEXINIT:
//System.Console.WriteLine("KEXINIT");
kex=receive_kexinit(buf);
break;
case SSH_MSG_NEWKEYS:
//System.Console.WriteLine("NEWKEYS");
send_newkeys();
receive_newkeys(buf, kex);
kex=null;
break;
case SSH_MSG_CHANNEL_DATA:
buf.getInt();
buf.getByte();
buf.getByte();
i=buf.getInt();
channel=Channel.getChannel(i, this);
foo=buf.getString(start, length);
if(channel==null)
{
break;
}
try
{
channel.write(foo, start[0], length[0]);
}
catch(Exception e)
{
//System.Console.WriteLine(e);
try{channel.disconnect();}
catch(Exception ee){}
break;
}
int len=length[0];
channel.setLocalWindowSize(channel.lwsize-len);
if(channel.lwsize<channel.lwsize_max/2)
{
packet.reset();
buf.putByte((byte)SSH_MSG_CHANNEL_WINDOW_ADJUST);
buf.putInt(channel.getRecipient());
buf.putInt(channel.lwsize_max-channel.lwsize);
write(packet);
channel.setLocalWindowSize(channel.lwsize_max);
}
break;
case SSH_MSG_CHANNEL_EXTENDED_DATA:
buf.getInt();
buf.getShort();
i=buf.getInt();
channel=Channel.getChannel(i, this);
buf.getInt(); // data_type_code == 1
foo=buf.getString(start, length);
//System.Console.WriteLine("stderr: "+new String(foo,start[0],length[0]));
if(channel==null)
{
break;
}
//channel.write(foo, start[0], length[0]);
channel.write_ext(foo, start[0], length[0]);
len=length[0];
channel.setLocalWindowSize(channel.lwsize-len);
if(channel.lwsize<channel.lwsize_max/2)
{
packet.reset();
buf.putByte((byte)SSH_MSG_CHANNEL_WINDOW_ADJUST);
buf.putInt(channel.getRecipient());
buf.putInt(channel.lwsize_max-channel.lwsize);
write(packet);
channel.setLocalWindowSize(channel.lwsize_max);
}
break;
case SSH_MSG_CHANNEL_WINDOW_ADJUST:
buf.getInt();
buf.getShort();
i=buf.getInt();
channel=Channel.getChannel(i, this);
if(channel==null)
{
break;
}
channel.addRemoteWindowSize(buf.getInt());
break;
case SSH_MSG_CHANNEL_EOF:
buf.getInt();
buf.getShort();
i=buf.getInt();
channel=Channel.getChannel(i, this);
if(channel!=null)
{
//channel._eof_remote=true;
//channel.eof();
channel.eof_remote();
}
/*
packet.reset();
buf.putByte((byte)SSH_MSG_CHANNEL_EOF);
buf.putInt(channel.getRecipient());
write(packet);
*/
break;
case SSH_MSG_CHANNEL_CLOSE:
buf.getInt();
buf.getShort();
i=buf.getInt();
channel=Channel.getChannel(i, this);
if(channel!=null)
{
// channel.close();
channel.disconnect();
}
/*
if(Channel.pool.size()==0){
thread=null;
}
*/
break;
case SSH_MSG_CHANNEL_OPEN_CONFIRMATION:
buf.getInt();
buf.getShort();
i=buf.getInt();
channel=Channel.getChannel(i, this);
if(channel==null)
{
//break;
}
channel.setRecipient(buf.getInt());
channel.setRemoteWindowSize(buf.getInt());
channel.setRemotePacketSize(buf.getInt());
break;
case SSH_MSG_CHANNEL_OPEN_FAILURE:
buf.getInt();
buf.getShort();
i=buf.getInt();
channel=Channel.getChannel(i, this);
if(channel==null)
{
//break;
}
int reason_code=buf.getInt();
//foo=buf.getString(); // additional textual information
//foo=buf.getString(); // language tag
channel.exitstatus=reason_code;
channel._close=true;
channel._eof_remote=true;
channel.setRecipient(0);
break;
case SSH_MSG_CHANNEL_REQUEST:
buf.getInt();
buf.getShort();
i=buf.getInt();
foo=buf.getString();
bool reply=(buf.getByte()!=0);
channel=Channel.getChannel(i, this);
if(channel!=null)
{
byte reply_type=(byte)SSH_MSG_CHANNEL_FAILURE;
if((new String(foo)).equals("exit-status"))
{
i=buf.getInt(); // exit-status
channel.setExitStatus(i);
// System.Console.WriteLine("exit-stauts: "+i);
// channel.close();
reply_type=(byte)SSH_MSG_CHANNEL_SUCCESS;
}
if(reply)
{
packet.reset();
buf.putByte(reply_type);
buf.putInt(channel.getRecipient());
write(packet);
}
}
else
{
}
break;
case SSH_MSG_CHANNEL_OPEN:
buf.getInt();
buf.getShort();
foo=buf.getString();
String ctyp=new String(foo);
//System.Console.WriteLine("type="+ctyp);
if(!new String("forwarded-tcpip").equals(ctyp) &&
!(new String("x11").equals(ctyp) && x11_forwarding))
{
System.Console.WriteLine("Session.run: CHANNEL OPEN "+ctyp);
throw new IOException("Session.run: CHANNEL OPEN "+ctyp);
}
else
{
channel=Channel.getChannel(ctyp);
addChannel(channel);
channel.getData(buf);
channel.init();
packet.reset();
buf.putByte((byte)SSH_MSG_CHANNEL_OPEN_CONFIRMATION);
buf.putInt(channel.getRecipient());
buf.putInt(channel.id);
buf.putInt(channel.lwsize);
buf.putInt(channel.lmpsize);
write(packet);
Thread tmp=new Thread(channel);
tmp.setName("Channel "+ctyp+" "+host);
tmp.start();
break;
}
case SSH_MSG_CHANNEL_SUCCESS:
buf.getInt();
buf.getShort();
i=buf.getInt();
channel=Channel.getChannel(i, this);
if(channel==null)
{
break;
}
channel.reply=1;
break;
case SSH_MSG_CHANNEL_FAILURE:
buf.getInt();
buf.getShort();
i=buf.getInt();
channel=Channel.getChannel(i, this);
if(channel==null)
{
break;
}
channel.reply=0;
break;
case SSH_MSG_GLOBAL_REQUEST:
buf.getInt();
buf.getShort();
foo=buf.getString(); // request name
reply=(buf.getByte()!=0);
if(reply)
{
packet.reset();
buf.putByte((byte)SSH_MSG_REQUEST_FAILURE);
write(packet);
}
break;
case SSH_MSG_REQUEST_FAILURE:
case SSH_MSG_REQUEST_SUCCESS:
Thread t=grr.getThread();
if(t!=null)
{
grr.setReply(msgType==SSH_MSG_REQUEST_SUCCESS? 1 : 0);
t.interrupt();
}
break;
default:
System.Console.WriteLine("Session.run: unsupported type "+msgType);
throw new IOException("Unknown SSH message type "+msgType);
}
}
}
catch(Exception e)
{
//System.Console.WriteLine("# Session.run");
//e.printStackTrace();
}
try
{
disconnect();
}
catch(NullReferenceException e)
{
//System.Console.WriteLine("@1");
//e.printStackTrace();
}
catch(Exception e)
{
//System.Console.WriteLine("@2");
//e.printStackTrace();
}
_isConnected=false;
}
private KeyExchange receive_kexinit(Buffer buf)
{
int j=buf.getInt();
if(j!=buf.getLength())
{ // packet was compressed and
buf.getByte(); // j is the size of deflated packet.
I_S=new byte[buf.index-5];
}
else
{
I_S=new byte[j-1-buf.getByte()];
}
Tamir.SharpSsh.java.System.arraycopy(buf.buffer, buf.s, I_S, 0, I_S.Length);
/*
try{
byte[] tmp=new byte[I_S.Length];
Tamir.SharpSsh.java.System.arraycopy(I_S, 0, tmp, 0, I_S.Length);
Buffer tmpb=new Buffer(tmp);
System.Console.WriteLine("I_S: len="+I_S.Length);
tmpb.setOffSet(17);
System.Console.WriteLine("kex: "+new String(tmpb.getString()));
System.Console.WriteLine("server_host_key: "+new String(tmpb.getString()));
System.Console.WriteLine("cipher.c2s: "+new String(tmpb.getString()));
System.Console.WriteLine("cipher.s2c: "+new String(tmpb.getString()));
System.Console.WriteLine("mac.c2s: "+new String(tmpb.getString()));
System.Console.WriteLine("mac.s2c: "+new String(tmpb.getString()));
System.Console.WriteLine("compression.c2s: "+new String(tmpb.getString()));
System.Console.WriteLine("compression.s2c: "+new String(tmpb.getString()));
System.Console.WriteLine("lang.c2s: "+new String(tmpb.getString()));
System.Console.WriteLine("lang.s2c: "+new String(tmpb.getString()));
System.Console.WriteLine("?: "+(tmpb.getByte()&0xff));
System.Console.WriteLine("??: "+tmpb.getInt());
}
catch(Exception e){
System.Console.WriteLine(e);
}
*/
send_kexinit();
String[] guess=KeyExchange.guess(I_S, I_C);
if(guess==null)
{
throw new JSchException("Algorithm negotiation fail");
}
if(!isAuthed &&
(guess[KeyExchange.PROPOSAL_ENC_ALGS_CTOS].equals("none") ||
(guess[KeyExchange.PROPOSAL_ENC_ALGS_STOC].equals("none"))))
{
throw new JSchException("NONE Cipher should not be chosen before authentification is successed.");
}
KeyExchange kex=null;
try
{
Class c=Class.forName(getConfig(guess[KeyExchange.PROPOSAL_KEX_ALGS]));
kex=(KeyExchange)(c.newInstance());
}
catch(Exception e){ System.Console.Error.WriteLine("kex: "+e); }
kex._guess=guess;
kex.init(this, V_S, V_C, I_S, I_C);
return kex;
}
public override bool start(Session session)
{
//super.start(session);
//Vector identities=JSch.identities;
System.Collections.ArrayList identities = session.jsch.identities;
Packet packet = session.packet;
Buffer buf = session.buf;
String passphrase = null;
String username = session.username;
byte[] _username = null;
try{ _username = Util.getBytesUTF8(username); }
catch
{ //(java.io.UnsupportedEncodingException e){
_username = Util.getBytes(username);
}
for (int i = 0; i < identities.Count; i++)
{
Identity identity = (Identity)(identities[i]);
byte[] pubkeyblob = identity.getPublicKeyBlob();
//System.out.println("UserAuthPublicKey: "+identity+" "+pubkeyblob);
if (pubkeyblob != null)
{
// send
// byte SSH_MSG_USERAUTH_REQUEST(50)
// string user name
// string service name ("ssh-connection")
// string "publickey"
// boolen FALSE
// string plaintext password (ISO-10646 UTF-8)
packet.reset();
buf.putByte((byte)Session.SSH_MSG_USERAUTH_REQUEST);
buf.putString(_username);
buf.putString(Util.getBytes("ssh-connection"));
buf.putString(Util.getBytes("publickey"));
buf.putByte((byte)0);
buf.putString(Util.getBytes(identity.getAlgName()));
buf.putString(pubkeyblob);
session.write(packet);
loop1:
while (true)
{
// receive
// byte SSH_MSG_USERAUTH_PK_OK(52)
// string service name
buf = session.read(buf);
//System.out.println("read: 60 ? "+ buf.buffer[5]);
if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_PK_OK)
{
break;
}
else if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_FAILURE)
{
// System.out.println("USERAUTH publickey "+session.getIdentity()+
// " is not acceptable.");
break;
}
else if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_BANNER)
{
buf.getInt(); buf.getByte(); buf.getByte();
byte[] _message = buf.getString();
byte[] lang = buf.getString();
String message = null;
try{ message = Util.getStringUTF8(_message); }
catch
{ //(java.io.UnsupportedEncodingException e){
message = Util.getString(_message);
}
if (userinfo != null)
{
userinfo.showMessage(message);
}
goto loop1;
}
else
{
//System.out.println("USERAUTH fail ("+buf.buffer[5]+")");
//throw new JSchException("USERAUTH fail ("+buf.buffer[5]+")");
break;
}
}
if (buf.buffer[5] != Session.SSH_MSG_USERAUTH_PK_OK)
{
continue;
}
}
//System.out.println("UserAuthPublicKey: identity.isEncrypted()="+identity.isEncrypted());
int count = 5;
while (true)
{
if ((identity.isEncrypted() && passphrase == null))
{
if (userinfo == null)
{
throw new JSchException("USERAUTH fail");
}
if (identity.isEncrypted() &&
!userinfo.promptPassphrase("Passphrase for " + identity.getName()))
{
throw new JSchAuthCancelException("publickey");
//throw new JSchException("USERAUTH cancel");
//break;
}
passphrase = userinfo.getPassphrase();
}
if (!identity.isEncrypted() || passphrase != null)
{
//System.out.println("UserAuthPublicKey: @1 "+passphrase);
if (identity.setPassphrase(passphrase))
{
break;
}
}
passphrase = null;
count--;
if (count == 0)
{
break;
}
}
//System.out.println("UserAuthPublicKey: identity.isEncrypted()="+identity.isEncrypted());
if (identity.isEncrypted())
{
continue;
}
if (pubkeyblob == null)
{
pubkeyblob = identity.getPublicKeyBlob();
}
//System.out.println("UserAuthPublicKey: pubkeyblob="+pubkeyblob);
if (pubkeyblob == null)
{
continue;
}
// send
// byte SSH_MSG_USERAUTH_REQUEST(50)
// string user name
// string service name ("ssh-connection")
// string "publickey"
// boolen TRUE
// string plaintext password (ISO-10646 UTF-8)
packet.reset();
buf.putByte((byte)Session.SSH_MSG_USERAUTH_REQUEST);
buf.putString(_username);
buf.putString(Util.getBytes("ssh-connection"));
buf.putString(Util.getBytes("publickey"));
buf.putByte((byte)1);
buf.putString(Util.getBytes(identity.getAlgName()));
buf.putString(pubkeyblob);
// byte[] tmp=new byte[buf.index-5];
// System.arraycopy(buf.buffer, 5, tmp, 0, tmp.length);
// buf.putString(signature);
byte[] sid = session.getSessionId();
uint sidlen = (uint)sid.Length;
byte[] tmp = new byte[4 + sidlen + buf.index - 5];
tmp[0] = (byte)(sidlen >> 24);
tmp[1] = (byte)(sidlen >> 16);
tmp[2] = (byte)(sidlen >> 8);
tmp[3] = (byte)(sidlen);
Array.Copy(sid, 0, tmp, 4, sidlen);
Array.Copy(buf.buffer, 5, tmp, 4 + sidlen, buf.index - 5);
byte[] signature = identity.getSignature(session, tmp);
if (signature == null)
{ // for example, too long key length.
break;
}
buf.putString(signature);
session.write(packet);
loop2:
while (true)
{
// receive
// byte SSH_MSG_USERAUTH_SUCCESS(52)
// string service name
buf = session.read(buf);
//System.out.println("read: 52 ? "+ buf.buffer[5]);
if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_SUCCESS)
{
return(true);
}
else if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_BANNER)
{
buf.getInt(); buf.getByte(); buf.getByte();
byte[] _message = buf.getString();
byte[] lang = buf.getString();
String message = null;
try{ message = Util.getStringUTF8(_message); }
catch
{ //(java.io.UnsupportedEncodingException e){
message = Util.getString(_message);
}
if (userinfo != null)
{
userinfo.showMessage(message);
}
goto loop2;
}
else if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_FAILURE)
{
buf.getInt(); buf.getByte(); buf.getByte();
byte[] foo = buf.getString();
int partial_success = buf.getByte();
//System.out.println(new String(foo)+
// " partial_success:"+(partial_success!=0));
if (partial_success != 0)
{
throw new JSchPartialAuthException(Util.getString(foo));
}
break;
}
//System.out.println("USERAUTH fail ("+buf.buffer[5]+")");
//throw new JSchException("USERAUTH fail ("+buf.buffer[5]+")");
break;
}
}
return(false);
}
public override bool next(Buffer _buf)
{
int i, j;
bool result = false;
switch (state)
{
case SSH_MSG_KEXDH_REPLY:
// The server responds with:
// byte SSH_MSG_KEXDH_REPLY(31)
// string server public host key and certificates (K_S)
// mpint f
// string signature of H
j = _buf.getInt();
j = _buf.getByte();
j = _buf.getByte();
if (j != 31)
{
Console.WriteLine("type: must be 31 " + j);
result = false;
break;
}
K_S = _buf.getString();
// K_S is server_key_blob, which includes ....
// string ssh-dss
// impint p of dsa
// impint q of dsa
// impint g of dsa
// impint pub_key of dsa
//System.out.print("K_S: "); //dump(K_S, 0, K_S.length);
byte[] f = _buf.getMPInt();
byte[] sig_of_H = _buf.getString();
/*
* for(int ii=0; ii<sig_of_H.length;ii++){
* System.out.print(Integer.toHexString(sig_of_H[ii]&0xff));
* System.out.print(": ");
* }
* Console.WriteLine("");
*/
dh.setF(f);
K = dh.getK();
//The hash H is computed as the HASH hash of the concatenation of the
//following:
// string V_C, the client's version string (CR and NL excluded)
// string V_S, the server's version string (CR and NL excluded)
// string I_C, the payload of the client's SSH_MSG_KEXINIT
// string I_S, the payload of the server's SSH_MSG_KEXINIT
// string K_S, the host key
// mpint e, exchange value sent by the client
// mpint f, exchange value sent by the server
// mpint K, the shared secret
// This value is called the exchange hash, and it is used to authenti-
// cate the key exchange.
buf.reset();
buf.putString(V_C); buf.putString(V_S);
buf.putString(I_C); buf.putString(I_S);
buf.putString(K_S);
buf.putMPInt(e); buf.putMPInt(f);
buf.putMPInt(K);
byte[] foo = new byte[buf.getLength()];
buf.getByte(foo);
sha.update(foo, 0, foo.Length);
H = sha.digest();
//System.out.print("H -> "); //dump(H, 0, H.length);
i = 0;
j = 0;
j = (int)((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
String alg = Util.getString(K_S, i, j);
i += j;
result = false;
if (alg.Equals("ssh-rsa"))
{
byte[] tmp;
byte[] ee;
byte[] n;
type = RSA;
j = (int)((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i += j;
ee = tmp;
j = (int)((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i += j;
n = tmp;
// SignatureRSA sig=new SignatureRSA();
// sig.init();
ISignatureRSA sig = null;
try
{
sig = new Tamir.SharpSsh.jsch.jce.SignatureRSA();
sig.init();
}
catch (Exception eee)
{
Console.WriteLine(eee);
}
sig.setPubKey(ee, n);
sig.update(H);
result = sig.verify(sig_of_H);
//MainClass.dump(ee, n, sig_of_H, H);
}
else if (alg.Equals("ssh-dss"))
{
byte[] q = null;
byte[] tmp;
byte[] p;
byte[] g;
type = DSS;
j = (int)((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i += j;
p = tmp;
j = (int)((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i += j;
q = tmp;
j = (int)((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i += j;
g = tmp;
j = (int)((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i += j;
f = tmp;
// SignatureDSA sig=new SignatureDSA();
// sig.init();
ISignatureDSA sig = null;
try
{
sig = new Tamir.SharpSsh.jsch.jce.SignatureDSA();
sig.init();
}
catch (Exception ee)
{
Console.WriteLine(ee);
}
sig.setPubKey(f, p, q, g);
sig.update(H);
result = sig.verify(sig_of_H);
}
else
{
Console.WriteLine("unknow alg");
}
state = STATE_END;
break;
}
return(result);
}
public override bool next(Buffer _buf)
{
int i, j;
bool result = false;
switch (state)
{
case SSH_MSG_KEX_DH_GEX_GROUP:
// byte SSH_MSG_KEX_DH_GEX_GROUP(31)
// mpint p, safe prime
// mpint g, generator for subgroup in GF (p)
_buf.getInt();
_buf.getByte();
j = _buf.getByte();
if (j != 31)
{
Console.WriteLine("type: must be 31 " + j);
result = false;
}
p = _buf.getMPInt();
g = _buf.getMPInt();
/*
* for(int iii=0; iii<p.length; iii++){
* System.out.println("0x"+Integer.toHexString(p[iii]&0xff)+",");
* }
* System.out.println("");
* for(int iii=0; iii<g.length; iii++){
* System.out.println("0x"+Integer.toHexString(g[iii]&0xff)+",");
* }
*/
dh.setP(p);
dh.setG(g);
// The client responds with:
// byte SSH_MSG_KEX_DH_GEX_INIT(32)
// mpint e <- g^x mod p
// x is a random number (1 < x < (p-1)/2)
e = dh.getE();
packet.reset();
buf.putByte((byte)0x20);
buf.putMPInt(e);
session.write(packet);
state = SSH_MSG_KEX_DH_GEX_REPLY;
result = true;
break;
case SSH_MSG_KEX_DH_GEX_REPLY:
// The server responds with:
// byte SSH_MSG_KEX_DH_GEX_REPLY(33)
// string server public host key and certificates (K_S)
// mpint f
// string signature of H
j = _buf.getInt();
j = _buf.getByte();
j = _buf.getByte();
if (j != 33)
{
Console.WriteLine("type: must be 33 " + j);
result = false;
}
K_S = _buf.getString();
// K_S is server_key_blob, which includes ....
// string ssh-dss
// impint p of dsa
// impint q of dsa
// impint g of dsa
// impint pub_key of dsa
//System.out.print("K_S: "); dump(K_S, 0, K_S.length);
byte[] f = _buf.getMPInt();
byte[] sig_of_H = _buf.getString();
dh.setF(f);
K = dh.getK();
//The hash H is computed as the HASH hash of the concatenation of the
//following:
// string V_C, the client's version string (CR and NL excluded)
// string V_S, the server's version string (CR and NL excluded)
// string I_C, the payload of the client's SSH_MSG_KEXINIT
// string I_S, the payload of the server's SSH_MSG_KEXINIT
// string K_S, the host key
// uint32 min, minimal size in bits of an acceptable group
// uint32 n, preferred size in bits of the group the server should send
// uint32 max, maximal size in bits of an acceptable group
// mpint p, safe prime
// mpint g, generator for subgroup
// mpint e, exchange value sent by the client
// mpint f, exchange value sent by the server
// mpint K, the shared secret
// This value is called the exchange hash, and it is used to authenti-
// cate the key exchange.
buf.reset();
buf.putString(V_C); buf.putString(V_S);
buf.putString(I_C); buf.putString(I_S);
buf.putString(K_S);
buf.putInt(min); buf.putInt(preferred); buf.putInt(max);
buf.putMPInt(p); buf.putMPInt(g); buf.putMPInt(e); buf.putMPInt(f);
buf.putMPInt(K);
byte[] foo = new byte[buf.getLength()];
buf.getByte(foo);
sha.update(foo, 0, foo.Length);
H = sha.digest();
// System.out.print("H -> "); dump(H, 0, H.length);
i = 0;
j = 0;
j = (int)((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
String alg = Util.getString(K_S, i, j);
i += j;
if (alg.Equals("ssh-rsa"))
{
byte[] tmp;
byte[] ee;
byte[] n;
type = RSA;
j = (int)((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i += j;
ee = tmp;
j = (int)((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i += j;
n = tmp;
// SignatureRSA sig=new SignatureRSA();
// sig.init();
ISignatureRSA sig = null;
try
{
sig = new Tamir.SharpSsh.jsch.jce.SignatureRSA();
sig.init();
}
catch (Exception eee)
{
Console.WriteLine(eee);
}
sig.setPubKey(ee, n);
sig.update(H);
result = sig.verify(sig_of_H);
}
else if (alg.Equals("ssh-dss"))
{
byte[] q = null;
byte[] tmp;
type = DSS;
j = (int)((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i += j;
p = tmp;
j = (int)((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i += j;
q = tmp;
j = (int)((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i += j;
g = tmp;
j = (int)((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i += j;
f = tmp;
// SignatureDSA sig=new SignatureDSA();
// sig.init();
ISignatureDSA sig = null;
try
{
sig = new Tamir.SharpSsh.jsch.jce.SignatureDSA();
sig.init();
}
catch (Exception ee)
{
Console.WriteLine(ee);
}
sig.setPubKey(f, p, q, g);
sig.update(H);
result = sig.verify(sig_of_H);
}
else
{
Console.WriteLine("unknow alg");
}
state = STATE_END;
break;
}
return(result);
}
public override bool start(Session session)
{
// super.start(session);
//System.out.println("UserAuthPassword: start");
Packet packet = session.packet;
Buffer buf = session.buf;
String username = session.username;
String password = session.password;
String dest = username + "@" + session.host;
if (session.port != 22)
{
dest += (":" + session.port);
}
while (true)
{
if (password == null)
{
if (userinfo == null)
{
//throw new JSchException("USERAUTH fail");
return(false);
}
if (!userinfo.promptPassword("Password for " + dest))
{
throw new JSchAuthCancelException("password");
//break;
}
password = userinfo.getPassword();
if (password == null)
{
throw new JSchAuthCancelException("password");
//break;
}
}
byte[] _username = null;
try{ _username = Util.getBytesUTF8(username); }
catch {//(java.io.UnsupportedEncodingException e){
_username = Util.getBytes(username);
}
byte[] _password = null;
try{ _password = Util.getBytesUTF8(password); }
catch {//(java.io.UnsupportedEncodingException e){
_password = Util.getBytes(password);
}
// send
// byte SSH_MSG_USERAUTH_REQUEST(50)
// string user name
// string service name ("ssh-connection")
// string "password"
// boolen FALSE
// string plaintext password (ISO-10646 UTF-8)
packet.reset();
buf.putByte((byte)Session.SSH_MSG_USERAUTH_REQUEST);
buf.putString(_username);
buf.putString(Util.getBytes("ssh-connection"));
buf.putString(Util.getBytes("password"));
buf.putByte((byte)0);
buf.putString(_password);
session.write(packet);
loop:
while (true)
{
// receive
// byte SSH_MSG_USERAUTH_SUCCESS(52)
// string service name
buf = session.read(buf);
//System.out.println("read: 52 ? "+ buf.buffer[5]);
if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_SUCCESS)
{
return(true);
}
if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_BANNER)
{
buf.getInt(); buf.getByte(); buf.getByte();
byte[] _message = buf.getString();
byte[] lang = buf.getString();
String message = null;
try{ message = Util.getStringUTF8(_message); }
catch {//(java.io.UnsupportedEncodingException e){
message = Util.getString(_message);
}
if (userinfo != null)
{
userinfo.showMessage(message);
}
goto loop;
}
if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_FAILURE)
{
buf.getInt(); buf.getByte(); buf.getByte();
byte[] foo = buf.getString();
int partial_success = buf.getByte();
//System.out.println(new String(foo)+
// " partial_success:"+(partial_success!=0));
if (partial_success != 0)
{
throw new JSchPartialAuthException(Util.getString(foo));
}
break;
}
else
{
// System.out.println("USERAUTH fail ("+buf.buffer[5]+")");
// throw new JSchException("USERAUTH fail ("+buf.buffer[5]+")");
return(false);
}
}
password = null;
}
//throw new JSchException("USERAUTH fail");
//return false;
}
internal IdentityFile(String identity, JSch jsch)
{
this.identity = identity;
this.jsch = jsch;
try
{
Type c = Type.GetType(jsch.getConfig("3des-cbc"));
cipher = (Cipher)Activator.CreateInstance(c);
key = new byte[cipher.getBlockSize()]; // 24
iv = new byte[cipher.getIVSize()]; // 8
c = Type.GetType(jsch.getConfig("md5"));
hash = (HASH)(Activator.CreateInstance(c));
hash.init();
FileInfo file = new FileInfo(identity);
FileStream fis = File.OpenRead(identity);
byte[] buf = new byte[(int)(file.Length)];
int len = fis.Read(buf, 0, buf.Length);
fis.Close();
int i = 0;
while (i < len)
{
if (buf[i] == 'B' && buf[i + 1] == 'E' && buf[i + 2] == 'G' && buf[i + 3] == 'I')
{
i += 6;
if (buf[i] == 'D' && buf[i + 1] == 'S' && buf[i + 2] == 'A')
{
type = DSS;
}
else if (buf[i] == 'R' && buf[i + 1] == 'S' && buf[i + 2] == 'A')
{
type = RSA;
}
else if (buf[i] == 'S' && buf[i + 1] == 'S' && buf[i + 2] == 'H')
{ // FSecure
type = UNKNOWN;
keytype = FSECURE;
}
else
{
//System.out.println("invalid format: "+identity);
throw new JSchException("invaid privatekey: " + identity);
}
i += 3;
continue;
}
if (buf[i] == 'C' && buf[i + 1] == 'B' && buf[i + 2] == 'C' && buf[i + 3] == ',')
{
i += 4;
for (int ii = 0; ii < iv.Length; ii++)
{
iv[ii] = (byte)(((a2b(buf[i++]) << 4) & 0xf0) +
(a2b(buf[i++]) & 0xf));
}
continue;
}
if (buf[i] == 0x0d &&
i + 1 < buf.Length && buf[i + 1] == 0x0a)
{
i++;
continue;
}
if (buf[i] == 0x0a && i + 1 < buf.Length)
{
if (buf[i + 1] == 0x0a)
{
i += 2; break;
}
if (buf[i + 1] == 0x0d &&
i + 2 < buf.Length && buf[i + 2] == 0x0a)
{
i += 3; break;
}
bool inheader = false;
for (int j = i + 1; j < buf.Length; j++)
{
if (buf[j] == 0x0a)
{
break;
}
//if(buf[j]==0x0d) break;
if (buf[j] == ':')
{
inheader = true; break;
}
}
if (!inheader)
{
i++;
encrypted = false; // no passphrase
break;
}
}
i++;
}
if (type == ERROR)
{
throw new JSchException("invaid privatekey: " + identity);
}
int start = i;
while (i < len)
{
if (buf[i] == 0x0a)
{
bool xd = (buf[i - 1] == 0x0d);
Array.Copy(buf, i + 1,
buf,
i - (xd ? 1 : 0),
len - i - 1 - (xd ? 1 : 0)
);
if (xd)
{
len--;
}
len--;
continue;
}
if (buf[i] == '-')
{
break;
}
i++;
}
encoded_data = Util.fromBase64(buf, start, i - start);
if (encoded_data.Length > 4 && // FSecure
encoded_data[0] == (byte)0x3f &&
encoded_data[1] == (byte)0x6f &&
encoded_data[2] == (byte)0xf9 &&
encoded_data[3] == (byte)0xeb)
{
Buffer _buf = new Buffer(encoded_data);
_buf.getInt(); // 0x3f6ff9be
_buf.getInt();
byte[] _type = _buf.getString();
//System.out.println("type: "+new String(_type));
byte[] _cipher = _buf.getString();
String s_cipher = System.Text.Encoding.Default.GetString(_cipher);
//System.out.println("cipher: "+cipher);
if (s_cipher.Equals("3des-cbc"))
{
_buf.getInt();
byte[] foo = new byte[encoded_data.Length - _buf.getOffSet()];
_buf.getByte(foo);
encoded_data = foo;
encrypted = true;
throw new JSchException("unknown privatekey format: " + identity);
}
else if (s_cipher.Equals("none"))
{
_buf.getInt();
//_buf.getInt();
encrypted = false;
byte[] foo = new byte[encoded_data.Length - _buf.getOffSet()];
_buf.getByte(foo);
encoded_data = foo;
}
}
try
{
file = new FileInfo(identity + ".pub");
fis = File.OpenRead(identity + ".pub");
buf = new byte[(int)(file.Length)];
len = fis.Read(buf, 0, buf.Length);
fis.Close();
}
catch
{
return;
}
if (buf.Length > 4 && // FSecure's public key
buf[0] == '-' && buf[1] == '-' && buf[2] == '-' && buf[3] == '-')
{
i = 0;
do
{
i++;
}while(buf.Length > i && buf[i] != 0x0a);
if (buf.Length <= i)
{
return;
}
while (true)
{
if (buf[i] == 0x0a)
{
bool inheader = false;
for (int j = i + 1; j < buf.Length; j++)
{
if (buf[j] == 0x0a)
{
break;
}
if (buf[j] == ':')
{
inheader = true; break;
}
}
if (!inheader)
{
i++;
break;
}
}
i++;
}
if (buf.Length <= i)
{
return;
}
start = i;
while (i < len)
{
if (buf[i] == 0x0a)
{
Array.Copy(buf, i + 1, buf, i, len - i - 1);
len--;
continue;
}
if (buf[i] == '-')
{
break;
}
i++;
}
publickeyblob = Util.fromBase64(buf, start, i - start);
if (type == UNKNOWN)
{
if (publickeyblob[8] == 'd')
{
type = DSS;
}
else if (publickeyblob[8] == 'r')
{
type = RSA;
}
}
}
else
{
if (buf[0] != 's' || buf[1] != 's' || buf[2] != 'h' || buf[3] != '-')
{
return;
}
i = 0;
while (i < len)
{
if (buf[i] == ' ')
{
break;
}
i++;
}
i++;
if (i >= len)
{
return;
}
start = i;
while (i < len)
{
if (buf[i] == ' ')
{
break;
}
i++;
}
publickeyblob = Util.fromBase64(buf, start, i - start);
}
}
catch (Exception e)
{
Console.WriteLine("Identity: " + e);
if (e is JSchException)
{
throw (JSchException)e;
}
throw new JSchException(e.ToString());
}
}
private KeyExchange receive_kexinit(Buffer buf)
{
int j=buf.getInt();
if(j!=buf.getLength())
{ // packet was compressed and
buf.getByte(); // j is the size of deflated packet.
I_S=new byte[buf.index-5];
}
else
{
I_S=new byte[j-1-buf.getByte()];
}
Array.Copy(buf.buffer, buf.s, I_S, 0, I_S.Length);
/*
try{
byte[] tmp=new byte[I_S.length];
System.arraycopy(I_S, 0, tmp, 0, I_S.length);
Buffer tmpb=new Buffer(tmp);
Console.WritLine("I_S: len="+I_S.length);
tmpb.setOffSet(17);
Console.WritLine("kex: "+new String(tmpb.getString()));
Console.WritLine("server_host_key: "+new String(tmpb.getString()));
Console.WritLine("cipher.c2s: "+new String(tmpb.getString()));
Console.WritLine("cipher.s2c: "+new String(tmpb.getString()));
Console.WritLine("mac.c2s: "+new String(tmpb.getString()));
Console.WritLine("mac.s2c: "+new String(tmpb.getString()));
Console.WritLine("compression.c2s: "+new String(tmpb.getString()));
Console.WritLine("compression.s2c: "+new String(tmpb.getString()));
Console.WritLine("lang.c2s: "+new String(tmpb.getString()));
Console.WritLine("lang.s2c: "+new String(tmpb.getString()));
Console.WritLine("?: "+(tmpb.getByte()&0xff));
Console.WritLine("??: "+tmpb.getInt());
}
catch(Exception e){
Console.WritLine(e);
}
*/
send_kexinit();
String[] guess=KeyExchange.Guess(I_S, I_C);
if(guess==null)
{
throw new JSchException("Algorithm negotiation fail");
}
KeyExchange kex=null;
try
{
Type t=Type.GetType(getConfig(guess[KeyExchange.PROPOSAL_KEX_ALGS]));
kex=(KeyExchange)(Activator.CreateInstance(t));
kex.guess=guess;
kex.init(this, V_S, V_C, I_S, I_C);
}
catch(Exception e){Console.WriteLine("kex: "+e); }
return kex;
}
public override bool start(Session session)
{
base.start(session);
//System.out.println("UserAuthNone: start");
Packet packet = session.packet;
Buffer buf = session.buf;
String username = session.username;
byte[] _username = null;
try{ _username = Util.getBytesUTF8(username); }
catch
{ //(java.io.UnsupportedEncodingException e){
_username = Util.getBytes(username);
}
// send
// byte SSH_MSG_USERAUTH_REQUEST(50)
// string user name
// string service name ("ssh-connection")
// string "none"
packet.reset();
buf.putByte((byte)Session.SSH_MSG_USERAUTH_REQUEST);
buf.putString(_username);
buf.putString(Util.getBytes("ssh-connection"));
buf.putString(Util.getBytes("none"));
session.write(packet);
loop:
while (true)
{
// receive
// byte SSH_MSG_USERAUTH_SUCCESS(52)
// string service name
buf = session.read(buf);
//System.out.println("UserAuthNone: read: 52 ? "+ buf.buffer[5]);
if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_SUCCESS)
{
return(true);
}
if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_BANNER)
{
buf.getInt(); buf.getByte(); buf.getByte();
byte[] _message = buf.getString();
byte[] lang = buf.getString();
String message = null;
try{ message = Util.getStringUTF8(_message); }
catch
{ //(java.io.UnsupportedEncodingException e){
message = Util.getString(_message);
}
if (userinfo != null)
{
userinfo.showMessage(message);
}
goto loop;
}
if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_FAILURE)
{
buf.getInt(); buf.getByte(); buf.getByte();
byte[] foo = buf.getString();
int partial_success = buf.getByte();
methods = Util.getString(foo);
//System.out.println("UserAuthNONE: "+methods+
// " partial_success:"+(partial_success!=0));
// if(partial_success!=0){
// throw new JSchPartialAuthException(new String(foo));
// }
break;
}
else
{
// System.out.println("USERAUTH fail ("+buf.buffer[5]+")");
throw new JSchException("USERAUTH fail (" + buf.buffer[5] + ")");
}
}
//throw new JSchException("USERAUTH fail");
return(false);
}
public static KeyPair load(JSch jsch, String prvkey, String pubkey)
{
byte[] iv=new byte[8]; // 8
bool encrypted=true;
byte[] data=null;
byte[] publickeyblob=null;
int type=ERROR;
int vendor=VENDOR_OPENSSH;
try
{
//File file=new File(prvkey);
FileStream fis=File.OpenRead(prvkey);
byte[] buf=new byte[(int)(fis.Length)];
int len=fis.Read(buf, 0, buf.Length);
fis.Close();
int i=0;
while(i<len)
{
if(buf[i]=='B'&& buf[i+1]=='E'&& buf[i+2]=='G'&& buf[i+3]=='I')
{
i+=6;
if(buf[i]=='D'&& buf[i+1]=='S'&& buf[i+2]=='A'){ type=DSA; }
else if(buf[i]=='R'&& buf[i+1]=='S'&& buf[i+2]=='A'){ type=RSA; }
else if(buf[i]=='S'&& buf[i+1]=='S'&& buf[i+2]=='H')
{ // FSecure
type=UNKNOWN;
vendor=VENDOR_FSECURE;
}
else
{
//System.outs.println("invalid format: "+identity);
throw new JSchException("invaid privatekey: "+prvkey);
}
i+=3;
continue;
}
if(buf[i]=='C'&& buf[i+1]=='B'&& buf[i+2]=='C'&& buf[i+3]==',')
{
i+=4;
for(int ii=0; ii<iv.Length; ii++)
{
iv[ii]=(byte)(((a2b(buf[i++])<<4)&0xf0)+(a2b(buf[i++])&0xf));
}
continue;
}
if(buf[i]==0x0d &&
i+1<buf.Length && buf[i+1]==0x0a)
{
i++;
continue;
}
if(buf[i]==0x0a && i+1<buf.Length)
{
if(buf[i+1]==0x0a){ i+=2; break; }
if(buf[i+1]==0x0d &&
i+2<buf.Length && buf[i+2]==0x0a)
{
i+=3; break;
}
bool inheader=false;
for(int j=i+1; j<buf.Length; j++)
{
if(buf[j]==0x0a) break;
//if(buf[j]==0x0d) break;
if(buf[j]==':'){inheader=true; break;}
}
if(!inheader)
{
i++;
encrypted=false; // no passphrase
break;
}
}
i++;
}
if(type==ERROR)
{
throw new JSchException("invaid privatekey: "+prvkey);
}
int start=i;
while(i<len)
{
if(buf[i]==0x0a)
{
bool xd=(buf[i-1]==0x0d);
Array.Copy(buf, i+1,
buf,
i-(xd ? 1 : 0),
len-i-1-(xd ? 1 : 0)
);
if(xd)len--;
len--;
continue;
}
if(buf[i]=='-'){ break; }
i++;
}
data=Util.fromBase64(buf, start, i-start);
if(data.Length>4 && // FSecure
data[0]==(byte)0x3f &&
data[1]==(byte)0x6f &&
data[2]==(byte)0xf9 &&
data[3]==(byte)0xeb)
{
Buffer _buf=new Buffer(data);
_buf.getInt(); // 0x3f6ff9be
_buf.getInt();
byte[]_type=_buf.getString();
//System.outs.println("type: "+new String(_type));
byte[] _cipher=_buf.getString();
String cipher=Util.getString(_cipher);
//System.outs.println("cipher: "+cipher);
if(cipher.Equals("3des-cbc"))
{
_buf.getInt();
byte[] foo=new byte[data.Length-_buf.getOffSet()];
_buf.getByte(foo);
data=foo;
encrypted=true;
throw new JSchException("unknown privatekey format: "+prvkey);
}
else if(cipher.Equals("none"))
{
_buf.getInt();
_buf.getInt();
encrypted=false;
byte[] foo=new byte[data.Length-_buf.getOffSet()];
_buf.getByte(foo);
data=foo;
}
}
if(pubkey!=null)
{
try
{
//file=new File(pubkey);
fis=File.OpenRead(pubkey);
buf=new byte[(int)(fis.Length)];
len=fis.Read(buf, 0, buf.Length);
fis.Close();
if(buf.Length>4 && // FSecure's public key
buf[0]=='-' && buf[1]=='-' && buf[2]=='-' && buf[3]=='-')
{
bool valid=true;
i=0;
do{i++;}while(buf.Length>i && buf[i]!=0x0a);
if(buf.Length<=i) {valid=false;}
while(valid)
{
if(buf[i]==0x0a)
{
bool inheader=false;
for(int j=i+1; j<buf.Length; j++)
{
if(buf[j]==0x0a) break;
if(buf[j]==':'){inheader=true; break;}
}
if(!inheader)
{
i++;
break;
}
}
i++;
}
if(buf.Length<=i){valid=false;}
start=i;
while(valid && i<len)
{
if(buf[i]==0x0a)
{
Array.Copy(buf, i+1, buf, i, len-i-1);
len--;
continue;
}
if(buf[i]=='-'){ break; }
i++;
}
if(valid)
{
publickeyblob=Util.fromBase64(buf, start, i-start);
if(type==UNKNOWN)
{
if(publickeyblob[8]=='d'){ type=DSA; }
else if(publickeyblob[8]=='r'){ type=RSA; }
}
}
}
else
{
if(buf[0]=='s'&& buf[1]=='s'&& buf[2]=='h' && buf[3]=='-')
{
i=0;
while(i<len){ if(buf[i]==' ')break; i++;} i++;
if(i<len)
{
start=i;
while(i<len){ if(buf[i]==' ')break; i++;}
publickeyblob=Util.fromBase64(buf, start, i-start);
}
}
}
}
catch//(Exception ee)
{
}
}
}
catch(Exception e)
{
if(e is JSchException) throw (JSchException)e;
throw new JSchException(e.ToString());
}
KeyPair kpair=null;
if(type==DSA){ kpair=new KeyPairDSA(jsch); }
else if(type==RSA){ kpair=new KeyPairRSA(jsch); }
if(kpair!=null)
{
kpair.encrypted=encrypted;
kpair.publickeyblob=publickeyblob;
kpair.vendor=vendor;
if(encrypted)
{
kpair.iv=iv;
kpair.data=data;
}
else
{
if(kpair.parse(data))
{
return kpair;
}
else
{
throw new JSchException("invaid privatekey: "+prvkey);
}
}
}
return kpair;
}
internal Header header(Buffer buf, Header header)
{
buf.rewind();
int i=fill(buf.buffer, 0, 9);
header.length=buf.getInt()-5;
header.type=buf.getByte()&0xff;
header.rid=buf.getInt();
return header;
}
public override bool start(Session session)
{
//System.out.println("UserAuthKeyboardInteractive: start");
Packet packet = session.packet;
Buffer buf = session.buf;
String username = session.username;
String dest = username + "@" + session.host;
if (session.port != 22)
{
dest += (":" + session.port);
}
bool cancel = false;
byte[] _username = null;
try
{
_username = Encoding.UTF8.GetBytes(username);
}
catch
{
_username = Util.getBytes(username);
}
while (true)
{
// send
// byte SSH_MSG_USERAUTH_REQUEST(50)
// string user name (ISO-10646 UTF-8, as defined in [RFC-2279])
// string service name (US-ASCII) "ssh-userauth" ? "ssh-connection"
// string "keyboard-interactive" (US-ASCII)
// string language tag (as defined in [RFC-3066])
// string submethods (ISO-10646 UTF-8)
packet.reset();
buf.putByte(Session.SSH_MSG_USERAUTH_REQUEST);
buf.putString(_username);
buf.putString(Util.getBytes("ssh-connection"));
//buf.putString("ssh-userauth".getBytes());
buf.putString(Util.getBytes("keyboard-interactive"));
buf.putString(Util.getBytes(""));
buf.putString(Util.getBytes(""));
session.write(packet);
bool firsttime = true;
loop:
while (true)
{
// receive
// byte SSH_MSG_USERAUTH_SUCCESS(52)
// string service name
try
{
buf = session.read(buf);
}
catch (JSchException e)
{
e.GetType();
return(false);
}
catch (IOException e)
{
e.GetType();
return(false);
}
//System.out.println("read: 52 ? "+ buf.buffer[5]);
if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_SUCCESS)
{
return(true);
}
if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_BANNER)
{
buf.getInt();
buf.getByte();
buf.getByte();
byte[] _message = buf.getString();
byte[] lang = buf.getString();
String message = null;
try
{
message = Util.getStringUTF8(_message);
}
catch
{
message = Util.getString(_message);
}
if (userinfo != null)
{
userinfo.showMessage(message);
}
goto loop;
}
if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_FAILURE)
{
buf.getInt();
buf.getByte();
buf.getByte();
byte[] foo = buf.getString();
int partial_success = buf.getByte();
// System.out.println(new String(foo)+
// " partial_success:"+(partial_success!=0));
if (partial_success != 0)
{
throw new JSchPartialAuthException(Util.getString(foo));
}
if (firsttime)
{
throw new JSchException("USERAUTH KI is not supported");
//return false;
//cancel=true; // ??
}
break;
}
if (buf.buffer[5] == Session.SSH_MSG_USERAUTH_INFO_REQUEST)
{
firsttime = false;
buf.getInt();
buf.getByte();
buf.getByte();
String name = Util.getString(buf.getString());
String instruction = Util.getString(buf.getString());
String languate_tag = Util.getString(buf.getString());
int num = buf.getInt();
//System.out.println("name: "+name);
//System.out.println("instruction: "+instruction);
//System.out.println("lang: "+languate_tag);
//System.out.println("num: "+num);
var prompt = new String[num];
var echo = new bool[num];
for (int i = 0; i < num; i++)
{
prompt[i] = Util.getString(buf.getString());
echo[i] = (buf.getByte() != 0);
//System.out.println(" "+prompt[i]+","+echo[i]);
}
String[] response = null;
if (num > 0 ||
(name.Length > 0 || instruction.Length > 0)
)
{
var kbi = (UIKeyboardInteractive)userinfo;
if (userinfo != null)
{
response = kbi.promptKeyboardInteractive(dest,
name,
instruction,
prompt,
echo);
}
}
// byte SSH_MSG_USERAUTH_INFO_RESPONSE(61)
// int num-responses
// string response[1] (ISO-10646 UTF-8)
// ...
// string response[num-responses] (ISO-10646 UTF-8)
//if(response!=null)
//System.out.println("response.length="+response.length);
//else
//System.out.println("response is null");
packet.reset();
buf.putByte(Session.SSH_MSG_USERAUTH_INFO_RESPONSE);
if (num > 0 &&
(response == null || // cancel
num != response.Length))
{
buf.putInt(0);
if (response == null)
{
cancel = true;
}
}
else
{
buf.putInt(num);
for (int i = 0; i < num; i++)
{
//System.out.println("response: |"+response[i]+"| <- replace here with **** if you need");
buf.putString(Util.getBytes(response[i]));
}
}
session.write(packet);
if (cancel)
{
break;
}
//System.out.println("continue loop");
goto loop;
}
//throw new JSchException("USERAUTH fail ("+buf.buffer[5]+")");
return(false);
}
if (cancel)
{
throw new JSchAuthCancelException("keyboard-interactive");
//break;
}
}
//return false;
}
internal IdentityFile(String identity, JSch jsch)
{
this.identity = identity;
this.jsch = jsch;
try
{
Type c = Type.GetType(jsch.getConfig("3des-cbc"));
cipher = (Cipher) Activator.CreateInstance(c);
key = new byte[cipher.getBlockSize()]; // 24
iv = new byte[cipher.getIVSize()]; // 8
c = Type.GetType(jsch.getConfig("md5"));
hash = (HASH) (Activator.CreateInstance(c));
hash.init();
FileInfo file = new FileInfo(identity);
FileStream fis = File.OpenRead(identity);
byte[] buf = new byte[(int) (file.Length)];
int len = fis.Read(buf, 0, buf.Length);
fis.Close();
int i = 0;
while (i < len)
{
if (buf[i] == 'B' && buf[i + 1] == 'E' && buf[i + 2] == 'G' && buf[i + 3] == 'I')
{
i += 6;
if (buf[i] == 'D' && buf[i + 1] == 'S' && buf[i + 2] == 'A')
{
type = DSS;
}
else if (buf[i] == 'R' && buf[i + 1] == 'S' && buf[i + 2] == 'A')
{
type = RSA;
}
else if (buf[i] == 'S' && buf[i + 1] == 'S' && buf[i + 2] == 'H')
{
// FSecure
type = UNKNOWN;
keytype = FSECURE;
}
else
{
//System.out.println("invalid format: "+identity);
throw new JSchException("invaid privatekey: " + identity);
}
i += 3;
continue;
}
if (buf[i] == 'C' && buf[i + 1] == 'B' && buf[i + 2] == 'C' && buf[i + 3] == ',')
{
i += 4;
for (int ii = 0; ii < iv.Length; ii++)
{
iv[ii] = (byte) (((a2b(buf[i++]) << 4) & 0xf0) +
(a2b(buf[i++]) & 0xf));
}
continue;
}
if (buf[i] == 0x0d &&
i + 1 < buf.Length && buf[i + 1] == 0x0a)
{
i++;
continue;
}
if (buf[i] == 0x0a && i + 1 < buf.Length)
{
if (buf[i + 1] == 0x0a)
{
i += 2;
break;
}
if (buf[i + 1] == 0x0d &&
i + 2 < buf.Length && buf[i + 2] == 0x0a)
{
i += 3;
break;
}
bool inheader = false;
for (int j = i + 1; j < buf.Length; j++)
{
if (buf[j] == 0x0a) break;
//if(buf[j]==0x0d) break;
if (buf[j] == ':')
{
inheader = true;
break;
}
}
if (!inheader)
{
i++;
encrypted = false; // no passphrase
break;
}
}
i++;
}
if (type == ERROR)
{
throw new JSchException("invaid privatekey: " + identity);
}
int start = i;
while (i < len)
{
if (buf[i] == 0x0a)
{
bool xd = (buf[i - 1] == 0x0d);
Array.Copy(buf, i + 1,
buf,
i - (xd ? 1 : 0),
len - i - 1 - (xd ? 1 : 0)
);
if (xd) len--;
len--;
continue;
}
if (buf[i] == '-')
{
break;
}
i++;
}
encoded_data = Util.fromBase64(buf, start, i - start);
if (encoded_data.Length > 4 && // FSecure
encoded_data[0] == (byte) 0x3f &&
encoded_data[1] == (byte) 0x6f &&
encoded_data[2] == (byte) 0xf9 &&
encoded_data[3] == (byte) 0xeb)
{
Buffer _buf = new Buffer(encoded_data);
_buf.getInt(); // 0x3f6ff9be
_buf.getInt();
byte[] _type = _buf.getString();
//System.out.println("type: "+new String(_type));
byte[] _cipher = _buf.getString();
String s_cipher = Encoding.Default.GetString(_cipher);
//System.out.println("cipher: "+cipher);
if (s_cipher.Equals("3des-cbc"))
{
_buf.getInt();
byte[] foo = new byte[encoded_data.Length - _buf.getOffSet()];
_buf.getByte(foo);
encoded_data = foo;
encrypted = true;
throw new JSchException("unknown privatekey format: " + identity);
}
else if (s_cipher.Equals("none"))
{
_buf.getInt();
//_buf.getInt();
encrypted = false;
byte[] foo = new byte[encoded_data.Length - _buf.getOffSet()];
_buf.getByte(foo);
encoded_data = foo;
}
}
try
{
file = new FileInfo(identity + ".pub");
fis = File.OpenRead(identity + ".pub");
buf = new byte[(int) (file.Length)];
len = fis.Read(buf, 0, buf.Length);
fis.Close();
}
catch
{
return;
}
if (buf.Length > 4 && // FSecure's public key
buf[0] == '-' && buf[1] == '-' && buf[2] == '-' && buf[3] == '-')
{
i = 0;
do
{
i++;
} while (buf.Length > i && buf[i] != 0x0a);
if (buf.Length <= i) return;
while (true)
{
if (buf[i] == 0x0a)
{
bool inheader = false;
for (int j = i + 1; j < buf.Length; j++)
{
if (buf[j] == 0x0a) break;
if (buf[j] == ':')
{
inheader = true;
break;
}
}
if (!inheader)
{
i++;
break;
}
}
i++;
}
if (buf.Length <= i) return;
start = i;
while (i < len)
{
if (buf[i] == 0x0a)
{
Array.Copy(buf, i + 1, buf, i, len - i - 1);
len--;
continue;
}
if (buf[i] == '-')
{
break;
}
i++;
}
publickeyblob = Util.fromBase64(buf, start, i - start);
if (type == UNKNOWN)
{
if (publickeyblob[8] == 'd')
{
type = DSS;
}
else if (publickeyblob[8] == 'r')
{
type = RSA;
}
}
}
else
{
if (buf[0] != 's' || buf[1] != 's' || buf[2] != 'h' || buf[3] != '-') return;
i = 0;
while (i < len)
{
if (buf[i] == ' ') break;
i++;
}
i++;
if (i >= len) return;
start = i;
while (i < len)
{
if (buf[i] == ' ') break;
i++;
}
publickeyblob = Util.fromBase64(buf, start, i - start);
}
}
catch (Exception e)
{
Console.WriteLine("Identity: " + e);
if (e is JSchException) throw (JSchException) e;
throw new JSchException(e.ToString());
}
}
public override bool next(Buffer _buf)
{
int i, j;
bool result = false;
switch (state)
{
case SSH_MSG_KEX_DH_GEX_GROUP:
// byte SSH_MSG_KEX_DH_GEX_GROUP(31)
// mpint p, safe prime
// mpint g, generator for subgroup in GF (p)
_buf.getInt();
_buf.getByte();
j = _buf.getByte();
if (j != 31)
{
Console.WriteLine("type: must be 31 " + j);
result = false;
}
p = _buf.getMPInt();
g = _buf.getMPInt();
/*
for(int iii=0; iii<p.length; iii++){
System.out.println("0x"+Integer.toHexString(p[iii]&0xff)+",");
}
System.out.println("");
for(int iii=0; iii<g.length; iii++){
System.out.println("0x"+Integer.toHexString(g[iii]&0xff)+",");
}
*/
dh.setP(p);
dh.setG(g);
// The client responds with:
// byte SSH_MSG_KEX_DH_GEX_INIT(32)
// mpint e <- g^x mod p
// x is a random number (1 < x < (p-1)/2)
e = dh.getE();
packet.reset();
buf.putByte(0x20);
buf.putMPInt(e);
session.write(packet);
state = SSH_MSG_KEX_DH_GEX_REPLY;
result = true;
break;
case SSH_MSG_KEX_DH_GEX_REPLY:
// The server responds with:
// byte SSH_MSG_KEX_DH_GEX_REPLY(33)
// string server public host key and certificates (K_S)
// mpint f
// string signature of H
j = _buf.getInt();
j = _buf.getByte();
j = _buf.getByte();
if (j != 33)
{
Console.WriteLine("type: must be 33 " + j);
result = false;
}
K_S = _buf.getString();
// K_S is server_key_blob, which includes ....
// string ssh-dss
// impint p of dsa
// impint q of dsa
// impint g of dsa
// impint pub_key of dsa
//System.out.print("K_S: "); dump(K_S, 0, K_S.length);
byte[] f = _buf.getMPInt();
byte[] sig_of_H = _buf.getString();
dh.setF(f);
K = dh.getK();
//The hash H is computed as the HASH hash of the concatenation of the
//following:
// string V_C, the client's version string (CR and NL excluded)
// string V_S, the server's version string (CR and NL excluded)
// string I_C, the payload of the client's SSH_MSG_KEXINIT
// string I_S, the payload of the server's SSH_MSG_KEXINIT
// string K_S, the host key
// uint32 min, minimal size in bits of an acceptable group
// uint32 n, preferred size in bits of the group the server should send
// uint32 max, maximal size in bits of an acceptable group
// mpint p, safe prime
// mpint g, generator for subgroup
// mpint e, exchange value sent by the client
// mpint f, exchange value sent by the server
// mpint K, the shared secret
// This value is called the exchange hash, and it is used to authenti-
// cate the key exchange.
buf.reset();
buf.putString(V_C);
buf.putString(V_S);
buf.putString(I_C);
buf.putString(I_S);
buf.putString(K_S);
buf.putInt(min);
buf.putInt(preferred);
buf.putInt(max);
buf.putMPInt(p);
buf.putMPInt(g);
buf.putMPInt(e);
buf.putMPInt(f);
buf.putMPInt(K);
var foo = new byte[buf.getLength()];
buf.getByte(foo);
sha.update(foo, 0, foo.Length);
H = sha.digest();
// System.out.print("H -> "); dump(H, 0, H.length);
i = 0;
j = 0;
j = (int) ((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
String alg = Util.getString(K_S, i, j);
i += j;
if (alg.Equals("ssh-rsa"))
{
byte[] tmp;
byte[] ee;
byte[] n;
type = RSA;
j = (int) ((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j];
Array.Copy(K_S, i, tmp, 0, j);
i += j;
ee = tmp;
j = (int) ((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j];
Array.Copy(K_S, i, tmp, 0, j);
i += j;
n = tmp;
// SignatureRSA sig=new SignatureRSA();
// sig.init();
SignatureRSA sig = null;
try
{
Type t = Type.GetType(session.getConfig("signature.rsa"));
sig = (SignatureRSA) (Activator.CreateInstance(t));
sig.init();
}
catch (Exception eee)
{
Console.WriteLine(eee);
}
sig.setPubKey(ee, n);
sig.update(H);
result = sig.verify(sig_of_H);
}
else if (alg.Equals("ssh-dss"))
{
byte[] q = null;
byte[] tmp;
type = DSS;
j = (int) ((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j];
Array.Copy(K_S, i, tmp, 0, j);
i += j;
p = tmp;
j = (int) ((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j];
Array.Copy(K_S, i, tmp, 0, j);
i += j;
q = tmp;
j = (int) ((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j];
Array.Copy(K_S, i, tmp, 0, j);
i += j;
g = tmp;
j = (int) ((K_S[i++] << 24) & 0xff000000) | ((K_S[i++] << 16) & 0x00ff0000) |
((K_S[i++] << 8) & 0x0000ff00) | ((K_S[i++]) & 0x000000ff);
tmp = new byte[j];
Array.Copy(K_S, i, tmp, 0, j);
i += j;
f = tmp;
// SignatureDSA sig=new SignatureDSA();
// sig.init();
SignatureDSA sig = null;
try
{
Type t = Type.GetType(session.getConfig("signature.dss"));
sig = (SignatureDSA) (Activator.CreateInstance(t));
sig.init();
}
catch (Exception ee)
{
Console.WriteLine(ee);
}
sig.setPubKey(f, p, q, g);
sig.update(H);
result = sig.verify(sig_of_H);
}
else
{
Console.WriteLine("unknow alg");
}
state = STATE_END;
break;
}
return result;
}
public static KeyPair load(JSch jsch, String prvkey, String pubkey)
{
var iv = new byte[8]; // 8
bool encrypted = true;
byte[] data = null;
byte[] publickeyblob = null;
int type = ERROR;
int vendor = VENDOR_OPENSSH;
try
{
//File file=new File(prvkey);
FileStream fis = File.OpenRead(prvkey);
var buf = new byte[(int)(fis.Length)];
int len = fis.Read(buf, 0, buf.Length);
fis.Close();
int i = 0;
while (i < len)
{
if (buf[i] == 'B' && buf[i + 1] == 'E' && buf[i + 2] == 'G' && buf[i + 3] == 'I')
{
i += 6;
if (buf[i] == 'D' && buf[i + 1] == 'S' && buf[i + 2] == 'A')
{
type = DSA;
}
else if (buf[i] == 'R' && buf[i + 1] == 'S' && buf[i + 2] == 'A')
{
type = RSA;
}
else if (buf[i] == 'S' && buf[i + 1] == 'S' && buf[i + 2] == 'H')
{
// FSecure
type = UNKNOWN;
vendor = VENDOR_FSECURE;
}
else
{
//System.outs.println("invalid format: "+identity);
throw new JSchException("invaid privatekey: " + prvkey);
}
i += 3;
continue;
}
if (buf[i] == 'C' && buf[i + 1] == 'B' && buf[i + 2] == 'C' && buf[i + 3] == ',')
{
i += 4;
for (int ii = 0; ii < iv.Length; ii++)
{
iv[ii] = (byte)(((a2b(buf[i++]) << 4) & 0xf0) + (a2b(buf[i++]) & 0xf));
}
continue;
}
if (buf[i] == 0x0d &&
i + 1 < buf.Length && buf[i + 1] == 0x0a)
{
i++;
continue;
}
if (buf[i] == 0x0a && i + 1 < buf.Length)
{
if (buf[i + 1] == 0x0a)
{
i += 2;
break;
}
if (buf[i + 1] == 0x0d &&
i + 2 < buf.Length && buf[i + 2] == 0x0a)
{
i += 3;
break;
}
bool inheader = false;
for (int j = i + 1; j < buf.Length; j++)
{
if (buf[j] == 0x0a)
{
break;
}
//if(buf[j]==0x0d) break;
if (buf[j] == ':')
{
inheader = true;
break;
}
}
if (!inheader)
{
i++;
encrypted = false; // no passphrase
break;
}
}
i++;
}
if (type == ERROR)
{
throw new JSchException("invaid privatekey: " + prvkey);
}
int start = i;
while (i < len)
{
if (buf[i] == 0x0a)
{
bool xd = (buf[i - 1] == 0x0d);
Array.Copy(buf, i + 1,
buf,
i - (xd ? 1 : 0),
len - i - 1 - (xd ? 1 : 0)
);
if (xd)
{
len--;
}
len--;
continue;
}
if (buf[i] == '-')
{
break;
}
i++;
}
data = Util.fromBase64(buf, start, i - start);
if (data.Length > 4 && // FSecure
data[0] == 0x3f &&
data[1] == 0x6f &&
data[2] == 0xf9 &&
data[3] == 0xeb)
{
var _buf = new Buffer(data);
_buf.getInt(); // 0x3f6ff9be
_buf.getInt();
byte[] _type = _buf.getString();
//System.outs.println("type: "+new String(_type));
byte[] _cipher = _buf.getString();
String cipher = Util.getString(_cipher);
//System.outs.println("cipher: "+cipher);
if (cipher.Equals("3des-cbc"))
{
_buf.getInt();
var foo = new byte[data.Length - _buf.getOffSet()];
_buf.getByte(foo);
data = foo;
encrypted = true;
throw new JSchException("unknown privatekey format: " + prvkey);
}
else if (cipher.Equals("none"))
{
_buf.getInt();
_buf.getInt();
encrypted = false;
var foo = new byte[data.Length - _buf.getOffSet()];
_buf.getByte(foo);
data = foo;
}
}
if (pubkey != null)
{
try
{
//file=new File(pubkey);
fis = File.OpenRead(pubkey);
buf = new byte[(int)(fis.Length)];
len = fis.Read(buf, 0, buf.Length);
fis.Close();
if (buf.Length > 4 && // FSecure's public key
buf[0] == '-' && buf[1] == '-' && buf[2] == '-' && buf[3] == '-')
{
bool valid = true;
i = 0;
do
{
i++;
} while (buf.Length > i && buf[i] != 0x0a);
if (buf.Length <= i)
{
valid = false;
}
while (valid)
{
if (buf[i] == 0x0a)
{
bool inheader = false;
for (int j = i + 1; j < buf.Length; j++)
{
if (buf[j] == 0x0a)
{
break;
}
if (buf[j] == ':')
{
inheader = true;
break;
}
}
if (!inheader)
{
i++;
break;
}
}
i++;
}
if (buf.Length <= i)
{
valid = false;
}
start = i;
while (valid && i < len)
{
if (buf[i] == 0x0a)
{
Array.Copy(buf, i + 1, buf, i, len - i - 1);
len--;
continue;
}
if (buf[i] == '-')
{
break;
}
i++;
}
if (valid)
{
publickeyblob = Util.fromBase64(buf, start, i - start);
if (type == UNKNOWN)
{
if (publickeyblob[8] == 'd')
{
type = DSA;
}
else if (publickeyblob[8] == 'r')
{
type = RSA;
}
}
}
}
else
{
if (buf[0] == 's' && buf[1] == 's' && buf[2] == 'h' && buf[3] == '-')
{
i = 0;
while (i < len)
{
if (buf[i] == ' ')
{
break;
}
i++;
}
i++;
if (i < len)
{
start = i;
while (i < len)
{
if (buf[i] == ' ')
{
break;
}
i++;
}
publickeyblob = Util.fromBase64(buf, start, i - start);
}
}
}
}
catch //(Exception ee)
{
}
}
}
catch (Exception e)
{
if (e is JSchException)
{
throw e;
}
throw new JSchException(e.ToString());
}
KeyPair kpair = null;
if (type == DSA)
{
kpair = new KeyPairDSA(jsch);
}
else if (type == RSA)
{
kpair = new KeyPairRSA(jsch);
}
if (kpair != null)
{
kpair.encrypted = encrypted;
kpair.publickeyblob = publickeyblob;
kpair.vendor = vendor;
if (encrypted)
{
kpair.iv = iv;
kpair.data = data;
}
else
{
if (kpair.parse(data))
{
return(kpair);
}
else
{
throw new JSchException("invaid privatekey: " + prvkey);
}
}
}
return(kpair);
}
public override bool next(Buffer _buf)
{
int i,j;
bool result = false;
switch(state)
{
case SSH_MSG_KEXDH_REPLY:
// The server responds with:
// byte SSH_MSG_KEXDH_REPLY(31)
// string server public host key and certificates (K_S)
// mpint f
// string signature of H
j=_buf.getInt();
j=_buf.getByte();
j=_buf.getByte();
if(j!=31)
{
Console.WriteLine("type: must be 31 "+j);
result = false;
break;
}
K_S=_buf.getString();
// K_S is server_key_blob, which includes ....
// string ssh-dss
// impint p of dsa
// impint q of dsa
// impint g of dsa
// impint pub_key of dsa
//System.out.print("K_S: "); //dump(K_S, 0, K_S.length);
byte[] f=_buf.getMPInt();
byte[] sig_of_H=_buf.getString();
/*
for(int ii=0; ii<sig_of_H.length;ii++){
System.out.print(Integer.toHexString(sig_of_H[ii]&0xff));
System.out.print(": ");
}
Console.WriteLine("");
*/
dh.setF(f);
K=dh.getK();
//The hash H is computed as the HASH hash of the concatenation of the
//following:
// string V_C, the client's version string (CR and NL excluded)
// string V_S, the server's version string (CR and NL excluded)
// string I_C, the payload of the client's SSH_MSG_KEXINIT
// string I_S, the payload of the server's SSH_MSG_KEXINIT
// string K_S, the host key
// mpint e, exchange value sent by the client
// mpint f, exchange value sent by the server
// mpint K, the shared secret
// This value is called the exchange hash, and it is used to authenti-
// cate the key exchange.
buf.reset();
buf.putString(V_C); buf.putString(V_S);
buf.putString(I_C); buf.putString(I_S);
buf.putString(K_S);
buf.putMPInt(e); buf.putMPInt(f);
buf.putMPInt(K);
byte[] foo=new byte[buf.getLength()];
buf.getByte(foo);
sha.update(foo, 0, foo.Length);
H=sha.digest();
//System.out.print("H -> "); //dump(H, 0, H.length);
i=0;
j=0;
j=(int)((K_S[i++]<<24)&0xff000000)|((K_S[i++]<<16)&0x00ff0000)|
((K_S[i++]<<8)&0x0000ff00)|((K_S[i++])&0x000000ff);
String alg=Util.getString(K_S, i, j);
i+=j;
result=false;
if(alg.Equals("ssh-rsa"))
{
byte[] tmp;
byte[] ee;
byte[] n;
type=RSA;
j=(int)((K_S[i++]<<24)&0xff000000)|((K_S[i++]<<16)&0x00ff0000)|
((K_S[i++]<<8)&0x0000ff00)|((K_S[i++])&0x000000ff);
tmp=new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i+=j;
ee=tmp;
j=(int)((K_S[i++]<<24)&0xff000000)|((K_S[i++]<<16)&0x00ff0000)|
((K_S[i++]<<8)&0x0000ff00)|((K_S[i++])&0x000000ff);
tmp=new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i+=j;
n=tmp;
// SignatureRSA sig=new SignatureRSA();
// sig.init();
SignatureRSA sig=null;
try
{
Type t=Type.GetType(session.getConfig("signature.rsa"));
sig=(SignatureRSA)(Activator.CreateInstance(t));
sig.init();
}
catch(Exception eee)
{
Console.WriteLine(eee);
}
sig.setPubKey(ee, n);
sig.update(H);
result=sig.verify(sig_of_H);
//MainClass.dump(ee, n, sig_of_H, H);
}
else if(alg.Equals("ssh-dss"))
{
byte[] q=null;
byte[] tmp;
byte[] p;
byte[] g;
type=DSS;
j=(int)((K_S[i++]<<24)&0xff000000)|((K_S[i++]<<16)&0x00ff0000)|
((K_S[i++]<<8)&0x0000ff00)|((K_S[i++])&0x000000ff);
tmp=new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i+=j;
p=tmp;
j=(int)((K_S[i++]<<24)&0xff000000)|((K_S[i++]<<16)&0x00ff0000)|
((K_S[i++]<<8)&0x0000ff00)|((K_S[i++])&0x000000ff);
tmp=new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i+=j;
q=tmp;
j=(int)((K_S[i++]<<24)&0xff000000)|((K_S[i++]<<16)&0x00ff0000)|
((K_S[i++]<<8)&0x0000ff00)|((K_S[i++])&0x000000ff);
tmp=new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i+=j;
g=tmp;
j=(int)((K_S[i++]<<24)&0xff000000)|((K_S[i++]<<16)&0x00ff0000)|
((K_S[i++]<<8)&0x0000ff00)|((K_S[i++])&0x000000ff);
tmp=new byte[j]; Array.Copy(K_S, i, tmp, 0, j); i+=j;
f=tmp;
// SignatureDSA sig=new SignatureDSA();
// sig.init();
SignatureDSA sig=null;
try
{
Type t=Type.GetType(session.getConfig("signature.dss"));
sig=(SignatureDSA)(Activator.CreateInstance(t));
sig.init();
}
catch(Exception ee)
{
Console.WriteLine(ee);
}
sig.setPubKey(f, p, q, g);
sig.update(H);
result=sig.verify(sig_of_H);
}
else
{
Console.WriteLine("unknow alg");
}
state=STATE_END;
break;
}
return result;
}
private KeyExchange receive_kexinit(Buffer buf)
{
int j = buf.getInt();
if (j != buf.getLength())
{
// packet was compressed and
buf.getByte(); // j is the size of deflated packet.
I_S = new byte[buf.index - 5];
}
else
{
I_S = new byte[j - 1 - buf.getByte()];
}
Array.Copy(buf.buffer, buf.s, I_S, 0, I_S.Length);
send_kexinit();
String[] guess = KeyExchange.guess(I_S, I_C);
if (guess == null)
{
throw new JSchException("Algorithm negotiation fail");
}
if (!isAuthed &&
(guess[KeyExchange.PROPOSAL_ENC_ALGS_CTOS].Equals("none") ||
(guess[KeyExchange.PROPOSAL_ENC_ALGS_STOC].Equals("none"))))
{
throw new JSchException("NONE Cipher should not be chosen before authentification is successed.");
}
KeyExchange kex = null;
try
{
var c = Type.GetType(getConfig(guess[KeyExchange.PROPOSAL_KEX_ALGS]));
kex = (KeyExchange)Activator.CreateInstance(c);
}
catch (Exception e)
{
Console.Error.WriteLine("kex: " + e);
}
kex._guess = guess;
kex.init(this, V_S, V_C, I_S, I_C);
return kex;
}
