Ejemplo n.º 1
0
        byte[] getSignature_rsa(Session session, byte[] data)
        {
            try
            {
                //Type t=Type.GetType(jsch.getConfig("signature.rsa"));
                //SignatureRSA rsa=(SignatureRSA)Activator.CreateInstance(t);
                ISignatureRSA rsa = new Tamir.SharpSsh.jsch.jce.SignatureRSA();

                rsa.init();
                rsa.setPrvKey(e_array, n_array, d_array, p_array, q_array, dmp1_array, dmq1_array, iqmp_array);

                /*
                 * byte[] goo=new byte[4];
                 * goo[0]=(byte)(session.getSessionId().Length>>>24);
                 * goo[1]=(byte)(session.getSessionId().Length>>>16);
                 * goo[2]=(byte)(session.getSessionId().Length>>>8);
                 * goo[3]=(byte)(session.getSessionId().Length);
                 * rsa.update(goo);
                 * rsa.update(session.getSessionId());
                 */
                rsa.update(data);
                byte[] sig = rsa.sign();
                Buffer buf = new Buffer("ssh-rsa".Length + 4 +
                                        sig.Length + 4);
                buf.putString(System.Text.Encoding.Default.GetBytes("ssh-rsa"));
                buf.putString(sig);
                return(buf.buffer);
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
            }
            return(null);
        }
Ejemplo n.º 2
0
        public static void testSigFromJava()
        {
            FileStream fs = File.OpenRead("e.bin");

            byte[] e = new byte[fs.Length];
            fs.Read(e, 0, e.Length);
            fs.Close();

            fs = File.OpenRead("n.bin");
            byte[] n = new byte[fs.Length];
            fs.Read(n, 0, n.Length);
            fs.Close();

            fs = File.OpenRead("sig.bin");
            byte[] sig = new byte[fs.Length];
            fs.Read(sig, 0, sig.Length);
            fs.Close();

            Console.Write("E: ");
            Console.WriteLine(hex(e));
            Console.Write("N: ");
            Console.WriteLine(hex(n));
            Console.Write("SIG: ");
            Console.WriteLine(hex(sig));

            byte[] hash = Util.getBytes("Tamir");
            Tamir.SharpSsh.jsch.jce.SignatureRSA dec_rsa = new Tamir.SharpSsh.jsch.jce.SignatureRSA();
            dec_rsa.init();
            dec_rsa.setPubKey(e, n);
            dec_rsa.update(hash);
            Console.WriteLine(dec_rsa.verify(sig));
        }
Ejemplo n.º 3
0
 public byte[] getSignature(Session session, byte[] data)
 {
     try
     {
         SignatureRSA rsa = new Tamir.SharpSsh.jsch.jce.SignatureRSA();
         rsa.init();
         rsa.setPrvKey(_e_array, _n_array, _d_array, _p_array, _q_array, _dmp1_array, _dmq1_array, _iqmp_array);
         rsa.update(data);
         byte[] sig = rsa.sign();
         Buffer buf = new Buffer(ALGORITHM_NAME.Length + 4 + sig.Length + 4);
         buf.putString(System.Text.Encoding.Default.GetBytes(ALGORITHM_NAME));
         buf.putString(sig);
         return(buf.buffer);
     }
     catch (Exception e)
     {
         Console.WriteLine(e);
     }
     return(null);
 }
Ejemplo n.º 4
0
        public static void testDumpBase64()
        {
            String       fname  = "e.bin";
            StreamReader fs     = File.OpenText(fname);
            string       base64 = fs.ReadToEnd();

            byte[] e = Convert.FromBase64String(base64);
            fs.Close();

            fname  = "n.bin";
            fs     = File.OpenText(fname);
            base64 = fs.ReadToEnd();
            byte[] n = Convert.FromBase64String(base64);
            fs.Close();

            fname  = "sig.bin";
            fs     = File.OpenText(fname);
            base64 = fs.ReadToEnd();
            byte[] sig = Convert.FromBase64String(base64);
            fs.Close();

            fname  = "hash.bin";
            fs     = File.OpenText(fname);
            base64 = fs.ReadToEnd();
            byte[] hash = Convert.FromBase64String(base64);
            fs.Close();

            print("E", e);
            print("N", n);
            print("SIG", sig);
            print("HASH", hash);

            Tamir.SharpSsh.jsch.jce.SignatureRSA dec_rsa = new Tamir.SharpSsh.jsch.jce.SignatureRSA();
            dec_rsa.init();
            dec_rsa.setPubKey(e, n);
            dec_rsa.update(hash);

            Console.WriteLine(dec_rsa.verify(sig));
            Console.WriteLine();
        }
Ejemplo n.º 5
0
        public static void testDump()
        {
            String     fname = "e.bin";
            FileStream fs    = File.OpenRead(fname);

            byte[] e = new byte[fs.Length];
            fs.Read(e, 0, e.Length);
            fs.Close();

            fname = "n.bin";
            fs    = File.OpenRead(fname);
            byte[] n = new byte[fs.Length];
            fs.Read(n, 0, n.Length);
            fs.Close();

            fname = "sig.bin";
            fs    = File.OpenRead(fname);
            byte[] sig = new byte[fs.Length];
            fs.Read(sig, 0, sig.Length);
            fs.Close();

            fname = "hash.bin";
            fs    = File.OpenRead(fname);
            byte[] hash = new byte[fs.Length];
            fs.Read(hash, 0, hash.Length);
            fs.Close();

            print("E", e);
            print("N", n);
            print("SIG", sig);
            print("HASH", hash);

            Tamir.SharpSsh.jsch.jce.SignatureRSA dec_rsa = new Tamir.SharpSsh.jsch.jce.SignatureRSA();
            dec_rsa.init();
            dec_rsa.setPubKey(e, n);
            dec_rsa.update(hash);

            Console.WriteLine(dec_rsa.verify(sig));
            Console.WriteLine();
        }
Ejemplo n.º 6
0
        public static void testSig()
        {
            byte[] hash = Util.getBytes("Tamir");
            Tamir.SharpSsh.jsch.jce.SignatureRSA  enc_rsa = new Tamir.SharpSsh.jsch.jce.SignatureRSA();
            Tamir.SharpSsh.jsch.jce.SignatureRSA  dec_rsa = new Tamir.SharpSsh.jsch.jce.SignatureRSA();
            Tamir.SharpSsh.jsch.jce.KeyPairGenRSA gen     = new Tamir.SharpSsh.jsch.jce.KeyPairGenRSA();
            gen.init(512);

            enc_rsa.init();
            enc_rsa.setPrvKey(gen.KeyInfo);
            enc_rsa.update(hash);
            byte[] sig = enc_rsa.sign();

            dump(gen.getE(), gen.getN(), sig, hash);

            dec_rsa.init();
            dec_rsa.setPubKey(gen.getE(), gen.getN());
            dec_rsa.update(hash);



            Console.WriteLine(dec_rsa.verify(sig));
        }
Ejemplo n.º 7
0
		public static void testSig()
		{
			byte[] hash = Util.getBytes( "Tamir" );
			Tamir.SharpSsh.jsch.jce.SignatureRSA enc_rsa = new Tamir.SharpSsh.jsch.jce.SignatureRSA();
			Tamir.SharpSsh.jsch.jce.SignatureRSA dec_rsa = new Tamir.SharpSsh.jsch.jce.SignatureRSA();
			Tamir.SharpSsh.jsch.jce.KeyPairGenRSA gen = new Tamir.SharpSsh.jsch.jce.KeyPairGenRSA();
			gen.init(512);
			
			enc_rsa.init();
			enc_rsa.setPrvKey(gen.KeyInfo);
			enc_rsa.update(hash);
			byte[] sig = enc_rsa.sign();

			dump(gen.getE(), gen.getN(), sig, hash);

			dec_rsa.init();
			dec_rsa.setPubKey(gen.getE(), gen.getN());
			dec_rsa.update(hash);
			
			

			Console.WriteLine( dec_rsa.verify(sig) );
		}
Ejemplo n.º 8
0
        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);
        }
Ejemplo n.º 9
0
        public static void testSigFromJava()
        {
            FileStream fs = File.OpenRead("e.bin");
            byte[] e = new byte[fs.Length];
            fs.Read(e, 0, e.Length);
            fs.Close();

            fs = File.OpenRead("n.bin");
            byte[] n = new byte[fs.Length];
            fs.Read(n, 0, n.Length);
            fs.Close();

            fs = File.OpenRead("sig.bin");
            byte[] sig = new byte[fs.Length];
            fs.Read(sig, 0, sig.Length);
            fs.Close();

            Console.Write("E: ");
            Console.WriteLine( hex(e) );
            Console.Write("N: ");
            Console.WriteLine( hex(n) );
            Console.Write("SIG: ");
            Console.WriteLine( hex(sig) );

            byte[] hash = Util.getBytes( "Tamir" );
            Tamir.SharpSsh.jsch.jce.SignatureRSA dec_rsa = new Tamir.SharpSsh.jsch.jce.SignatureRSA();
            dec_rsa.init();
            dec_rsa.setPubKey(e, n);
            dec_rsa.update(hash);
            Console.WriteLine( dec_rsa.verify(sig) );
        }
Ejemplo n.º 10
0
        public static void testDumpBase64()
        {
            String fname = "e.bin";
            StreamReader fs = File.OpenText(fname);
            string base64 = fs.ReadToEnd();
            byte[] e = Convert.FromBase64String( base64 );
            fs.Close();

            fname = "n.bin";
            fs = File.OpenText(fname);
            base64 = fs.ReadToEnd();
            byte[] n = Convert.FromBase64String( base64 );
            fs.Close();

            fname = "sig.bin";
            fs = File.OpenText(fname);
            base64 = fs.ReadToEnd();
            byte[] sig = Convert.FromBase64String( base64 );
            fs.Close();

            fname = "hash.bin";
            fs = File.OpenText(fname);
            base64 = fs.ReadToEnd();
            byte[] hash = Convert.FromBase64String( base64 );
            fs.Close();

            print("E", e);
            print("N", n);
            print("SIG", sig);
            print("HASH", hash);

            Tamir.SharpSsh.jsch.jce.SignatureRSA dec_rsa = new Tamir.SharpSsh.jsch.jce.SignatureRSA();
            dec_rsa.init();
            dec_rsa.setPubKey(e, n);
            dec_rsa.update(hash);

            Console.WriteLine( dec_rsa.verify(sig) );
            Console.WriteLine();
        }
Ejemplo n.º 11
0
        public static void testDump()
        {
            String fname = "e.bin";
            FileStream fs = File.OpenRead(fname);
            byte[] e = new byte[fs.Length];
            fs.Read(e, 0, e.Length);
            fs.Close();

            fname = "n.bin";
            fs = File.OpenRead(fname);
            byte[] n = new byte[fs.Length];
            fs.Read(n, 0, n.Length);
            fs.Close();

            fname = "sig.bin";
            fs = File.OpenRead(fname);
            byte[] sig = new byte[fs.Length];
            fs.Read(sig, 0, sig.Length);
            fs.Close();

            fname = "hash.bin";
            fs = File.OpenRead(fname);
            byte[] hash = new byte[fs.Length];
            fs.Read(hash, 0, hash.Length);
            fs.Close();

            print("E", e);
            print("N", n);
            print("SIG", sig);
            print("HASH", hash);

            Tamir.SharpSsh.jsch.jce.SignatureRSA dec_rsa = new Tamir.SharpSsh.jsch.jce.SignatureRSA();
            dec_rsa.init();
            dec_rsa.setPubKey(e, n);
            dec_rsa.update(hash);

            Console.WriteLine( dec_rsa.verify(sig) );
            Console.WriteLine();
        }
Ejemplo n.º 12
0
        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);
        }