247 lines
7.1 KiB
Java
247 lines
7.1 KiB
Java
using System;
|
|
|
|
namespace Tamir.SharpSsh.jsch
|
|
{
|
|
/* -*-mode:java; c-basic-offset:2; -*- */
|
|
/*
|
|
Copyright (c) 2002,2003,2004 ymnk, JCraft,Inc. All rights reserved.
|
|
|
|
Redistribution and use in source and binary forms, with or without
|
|
modification, are permitted provided that the following conditions are met:
|
|
|
|
1. Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions and the following disclaimer.
|
|
|
|
2. Redistributions in binary form must reproduce the above copyright
|
|
notice, this list of conditions and the following disclaimer in
|
|
the documentation and/or other materials provided with the distribution.
|
|
|
|
3. The names of the authors may not be used to endorse or promote products
|
|
derived from this software without specific prior written permission.
|
|
|
|
THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
|
|
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
|
|
INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
|
|
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
|
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
public class KeyPairDSA : KeyPair
|
|
{
|
|
private byte[] P_array;
|
|
private byte[] Q_array;
|
|
private byte[] G_array;
|
|
private byte[] pub_array;
|
|
private byte[] prv_array;
|
|
|
|
//private int key_size=0;
|
|
private int key_size=1024;
|
|
|
|
public KeyPairDSA(JSch jsch):base(jsch)
|
|
{
|
|
}
|
|
|
|
internal override void generate(int key_size)
|
|
{
|
|
this.key_size=key_size;
|
|
try
|
|
{
|
|
Type t=Type.GetType(jsch.getConfig("keypairgen.dsa"));
|
|
KeyPairGenDSA keypairgen=(KeyPairGenDSA)(Activator.CreateInstance(t));
|
|
keypairgen.init(key_size);
|
|
P_array=keypairgen.getP();
|
|
Q_array=keypairgen.getQ();
|
|
G_array=keypairgen.getG();
|
|
pub_array=keypairgen.getY();
|
|
prv_array=keypairgen.getX();
|
|
|
|
keypairgen=null;
|
|
}
|
|
catch(Exception e)
|
|
{
|
|
Console.Error.WriteLine("KeyPairDSA: "+e);
|
|
throw new JSchException(e.ToString());
|
|
}
|
|
}
|
|
|
|
private static byte[] begin= Util.getBytes( "-----BEGIN DSA PRIVATE KEY-----" );
|
|
private static byte[] end=Util.getBytes("-----END DSA PRIVATE KEY-----");
|
|
|
|
internal override byte[] getBegin(){ return begin; }
|
|
internal override byte[] getEnd(){ return end; }
|
|
|
|
internal override byte[] getPrivateKey()
|
|
{
|
|
int content=
|
|
1+countLength(1) + 1 + // INTEGER
|
|
1+countLength(P_array.Length) + P_array.Length + // INTEGER P
|
|
1+countLength(Q_array.Length) + Q_array.Length + // INTEGER Q
|
|
1+countLength(G_array.Length) + G_array.Length + // INTEGER G
|
|
1+countLength(pub_array.Length) + pub_array.Length + // INTEGER pub
|
|
1+countLength(prv_array.Length) + prv_array.Length; // INTEGER prv
|
|
|
|
int total=
|
|
1+countLength(content)+content; // SEQUENCE
|
|
|
|
byte[] plain=new byte[total];
|
|
int index=0;
|
|
index=writeSEQUENCE(plain, index, content);
|
|
index=writeINTEGER(plain, index, new byte[1]); // 0
|
|
index=writeINTEGER(plain, index, P_array);
|
|
index=writeINTEGER(plain, index, Q_array);
|
|
index=writeINTEGER(plain, index, G_array);
|
|
index=writeINTEGER(plain, index, pub_array);
|
|
index=writeINTEGER(plain, index, prv_array);
|
|
return plain;
|
|
}
|
|
|
|
internal override bool parse(byte[] plain)
|
|
{
|
|
try
|
|
{
|
|
|
|
if(vendor==VENDOR_FSECURE)
|
|
{
|
|
if(plain[0]!=0x30)
|
|
{ // FSecure
|
|
Buffer buf=new Buffer(plain);
|
|
buf.getInt();
|
|
P_array=buf.getMPIntBits();
|
|
G_array=buf.getMPIntBits();
|
|
Q_array=buf.getMPIntBits();
|
|
pub_array=buf.getMPIntBits();
|
|
prv_array=buf.getMPIntBits();
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
int index=0;
|
|
int Length=0;
|
|
|
|
if(plain[index]!=0x30)return false;
|
|
index++; // SEQUENCE
|
|
Length=plain[index++]&0xff;
|
|
if((Length&0x80)!=0)
|
|
{
|
|
int foo=Length&0x7f; Length=0;
|
|
while(foo-->0){ Length=(Length<<8)+(plain[index++]&0xff); }
|
|
}
|
|
|
|
if(plain[index]!=0x02)return false;
|
|
index++; // INTEGER
|
|
Length=plain[index++]&0xff;
|
|
if((Length&0x80)!=0)
|
|
{
|
|
int foo=Length&0x7f; Length=0;
|
|
while(foo-->0){ Length=(Length<<8)+(plain[index++]&0xff); }
|
|
}
|
|
index+=Length;
|
|
|
|
index++;
|
|
Length=plain[index++]&0xff;
|
|
if((Length&0x80)!=0)
|
|
{
|
|
int foo=Length&0x7f; Length=0;
|
|
while(foo-->0){ Length=(Length<<8)+(plain[index++]&0xff); }
|
|
}
|
|
P_array=new byte[Length];
|
|
Array.Copy(plain, index, P_array, 0, Length);
|
|
index+=Length;
|
|
|
|
index++;
|
|
Length=plain[index++]&0xff;
|
|
if((Length&0x80)!=0)
|
|
{
|
|
int foo=Length&0x7f; Length=0;
|
|
while(foo-->0){ Length=(Length<<8)+(plain[index++]&0xff); }
|
|
}
|
|
Q_array=new byte[Length];
|
|
Array.Copy(plain, index, Q_array, 0, Length);
|
|
index+=Length;
|
|
|
|
index++;
|
|
Length=plain[index++]&0xff;
|
|
if((Length&0x80)!=0)
|
|
{
|
|
int foo=Length&0x7f; Length=0;
|
|
while(foo-->0){ Length=(Length<<8)+(plain[index++]&0xff); }
|
|
}
|
|
G_array=new byte[Length];
|
|
Array.Copy(plain, index, G_array, 0, Length);
|
|
index+=Length;
|
|
|
|
index++;
|
|
Length=plain[index++]&0xff;
|
|
if((Length&0x80)!=0)
|
|
{
|
|
int foo=Length&0x7f; Length=0;
|
|
while(foo-->0){ Length=(Length<<8)+(plain[index++]&0xff); }
|
|
}
|
|
pub_array=new byte[Length];
|
|
Array.Copy(plain, index, pub_array, 0, Length);
|
|
index+=Length;
|
|
|
|
index++;
|
|
Length=plain[index++]&0xff;
|
|
if((Length&0x80)!=0)
|
|
{
|
|
int foo=Length&0x7f; Length=0;
|
|
while(foo-->0){ Length=(Length<<8)+(plain[index++]&0xff); }
|
|
}
|
|
prv_array=new byte[Length];
|
|
Array.Copy(plain, index, prv_array, 0, Length);
|
|
index+=Length;
|
|
}
|
|
catch//(Exception e)
|
|
{
|
|
//System.out.println(e);
|
|
//e.printStackTrace();
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
public override byte[] getPublicKeyBlob()
|
|
{
|
|
byte[] foo=base.getPublicKeyBlob();
|
|
if(foo!=null) return foo;
|
|
|
|
if(P_array==null) return null;
|
|
|
|
Buffer buf=new Buffer(sshdss.Length+4+
|
|
P_array.Length+4+
|
|
Q_array.Length+4+
|
|
G_array.Length+4+
|
|
pub_array.Length+4);
|
|
buf.putString(sshdss);
|
|
buf.putString(P_array);
|
|
buf.putString(Q_array);
|
|
buf.putString(G_array);
|
|
buf.putString(pub_array);
|
|
return buf.buffer;
|
|
}
|
|
|
|
private static byte[] sshdss= Util.getBytes( "ssh-dss" );
|
|
internal override byte[] getKeyTypeName(){return sshdss;}
|
|
public override int getKeyType(){return DSA;}
|
|
|
|
public override int getKeySize(){return key_size; }
|
|
public override void dispose()
|
|
{
|
|
base.dispose();
|
|
P_array=null;
|
|
Q_array=null;
|
|
G_array=null;
|
|
pub_array=null;
|
|
prv_array=null;
|
|
}
|
|
}
|
|
|
|
}
|