internal void Hash()
{
if (hashed)
{
return;
}
MAC macsha1 = mykh.getHMACSHA1();
if (salt == null)
{
Random random = Session.random;
lock (random)
{
salt = new byte[macsha1.getBlockSize()];
random.fill(salt, 0, salt.Length);
}
}
try
{
lock (macsha1)
{
macsha1.init(salt);
byte[] foo = host.getBytes();
macsha1.update(foo, 0, foo.Length);
hash = new byte[macsha1.getBlockSize()];
macsha1.doFinal(hash, 0);
}
}
catch //(Exception e)
{
}
host = HASH_MAGIC + Encoding.UTF8.GetString(Util.toBase64(salt, 0, salt.Length)) +
HASH_DELIM + Encoding.UTF8.GetString(Util.toBase64(hash, 0, hash.Length));
hashed = true;
}
internal override bool isMatched(string _host)
{
if (!hashed)
{
return(base.isMatched(_host));
}
MAC macsha1 = mykh.getHMACSHA1();
try
{
lock (macsha1)
{
macsha1.init(salt);
byte[] foo = _host.getBytes();
macsha1.update(foo, 0, foo.Length);
byte[] bar = new byte[macsha1.getBlockSize()];
macsha1.doFinal(bar, 0);
return(Util.array_equals(hash, bar));
}
}
catch (Exception e)
{
Console.Out.WriteLine(e);
}
return(false);
}
private void updateKeys(KeyExchange kex)
{
byte[] K=kex.getK();
byte[] H=kex.getH();
HASH hash=kex.getHash();
String[] guess=kex._guess;
if(session_id==null)
{
session_id=new byte[H.Length];
Tamir.SharpSsh.java.System.arraycopy(H, 0, session_id, 0, H.Length);
}
/*
Initial IV client to server: HASH (K || H || "A" || session_id)
Initial IV server to client: HASH (K || H || "B" || session_id)
Encryption key client to server: HASH (K || H || "C" || session_id)
Encryption key server to client: HASH (K || H || "D" || session_id)
Integrity key client to server: HASH (K || H || "E" || session_id)
Integrity key server to client: HASH (K || H || "F" || session_id)
*/
buf.reset();
buf.putMPInt(K);
buf.putByte(H);
buf.putByte((byte)0x41);
buf.putByte(session_id);
hash.update(buf.buffer, 0, buf.index);
IVc2s=hash.digest();
int j=buf.index-session_id.Length-1;
buf.buffer[j]++;
hash.update(buf.buffer, 0, buf.index);
IVs2c=hash.digest();
buf.buffer[j]++;
hash.update(buf.buffer, 0, buf.index);
Ec2s=hash.digest();
buf.buffer[j]++;
hash.update(buf.buffer, 0, buf.index);
Es2c=hash.digest();
buf.buffer[j]++;
hash.update(buf.buffer, 0, buf.index);
MACc2s=hash.digest();
buf.buffer[j]++;
hash.update(buf.buffer, 0, buf.index);
MACs2c=hash.digest();
try
{
Class c;
c=Class.forName(getConfig(guess[KeyExchange.PROPOSAL_ENC_ALGS_STOC]));
s2ccipher=(Cipher)(c.newInstance());
while(s2ccipher.getBlockSize()>Es2c.Length)
{
buf.reset();
buf.putMPInt(K);
buf.putByte(H);
buf.putByte(Es2c);
hash.update(buf.buffer, 0, buf.index);
byte[] foo=hash.digest();
byte[] bar=new byte[Es2c.Length+foo.Length];
Tamir.SharpSsh.java.System.arraycopy(Es2c, 0, bar, 0, Es2c.Length);
Tamir.SharpSsh.java.System.arraycopy(foo, 0, bar, Es2c.Length, foo.Length);
Es2c=bar;
}
s2ccipher.init(Cipher.DECRYPT_MODE, Es2c, IVs2c);
cipher_size=s2ccipher.getIVSize();
c=Class.forName(getConfig(guess[KeyExchange.PROPOSAL_MAC_ALGS_STOC]));
s2cmac=(MAC)(c.newInstance());
s2cmac.init(MACs2c);
mac_buf=new byte[s2cmac.getBlockSize()];
c=Class.forName(getConfig(guess[KeyExchange.PROPOSAL_ENC_ALGS_CTOS]));
c2scipher=(Cipher)(c.newInstance());
while(c2scipher.getBlockSize()>Ec2s.Length)
{
buf.reset();
buf.putMPInt(K);
buf.putByte(H);
buf.putByte(Ec2s);
hash.update(buf.buffer, 0, buf.index);
byte[] foo=hash.digest();
byte[] bar=new byte[Ec2s.Length+foo.Length];
Tamir.SharpSsh.java.System.arraycopy(Ec2s, 0, bar, 0, Ec2s.Length);
Tamir.SharpSsh.java.System.arraycopy(foo, 0, bar, Ec2s.Length, foo.Length);
Ec2s=bar;
}
c2scipher.init(Cipher.ENCRYPT_MODE, Ec2s, IVc2s);
c=Class.forName(getConfig(guess[KeyExchange.PROPOSAL_MAC_ALGS_CTOS]));
c2smac=(MAC)(c.newInstance());
c2smac.init(MACc2s);
if(!guess[KeyExchange.PROPOSAL_COMP_ALGS_CTOS].equals("none"))
{
String foo=getConfig(guess[KeyExchange.PROPOSAL_COMP_ALGS_CTOS]);
if(foo!=null)
{
try
{
c=Class.forName(foo);
deflater=(Compression)(c.newInstance());
int level=6;
try{ level=Integer.parseInt(getConfig("compression_level"));}
catch(Exception ee){ }
deflater.init(Compression.DEFLATER, level);
}
catch(Exception ee)
{
System.Console.Error.WriteLine(foo+" isn't accessible.");
}
}
}
else
{
if(deflater!=null)
{
deflater=null;
}
}
if(!guess[KeyExchange.PROPOSAL_COMP_ALGS_STOC].equals("none"))
{
String foo=getConfig(guess[KeyExchange.PROPOSAL_COMP_ALGS_STOC]);
if(foo!=null)
{
try
{
c=Class.forName(foo);
inflater=(Compression)(c.newInstance());
inflater.init(Compression.INFLATER, 0);
}
catch(Exception ee)
{
System.Console.Error.WriteLine(foo+" isn't accessible.");
}
}
}
else
{
if(inflater!=null)
{
inflater=null;
}
}
}
catch(Exception e){ System.Console.Error.WriteLine("updatekeys: "+e); }
}
private void updateKeys(KeyExchange kex)
{
byte[] K = kex.getK();
byte[] H = kex.getH();
HASH hash = kex.getHash();
// string[] guess=kex.guess;
if (session_id == null)
{
session_id = new byte[H.Length];
Array.Copy(H, 0, session_id, 0, H.Length);
}
/*
Initial IV client to server: HASH (K || H || "A" || session_id)
Initial IV server to client: HASH (K || H || "B" || session_id)
Encryption key client to server: HASH (K || H || "C" || session_id)
Encryption key server to client: HASH (K || H || "D" || session_id)
Integrity key client to server: HASH (K || H || "E" || session_id)
Integrity key server to client: HASH (K || H || "F" || session_id)
*/
buf.reset();
buf.putMPInt(K);
buf.putByte(H);
buf.putByte((byte)0x41);
buf.putByte(session_id);
hash.update(buf.buffer, 0, buf.index);
IVc2s = hash.digest();
int j = buf.index - session_id.Length - 1;
buf.buffer[j]++;
hash.update(buf.buffer, 0, buf.index);
IVs2c = hash.digest();
buf.buffer[j]++;
hash.update(buf.buffer, 0, buf.index);
Ec2s = hash.digest();
buf.buffer[j]++;
hash.update(buf.buffer, 0, buf.index);
Es2c = hash.digest();
buf.buffer[j]++;
hash.update(buf.buffer, 0, buf.index);
MACc2s = hash.digest();
buf.buffer[j]++;
hash.update(buf.buffer, 0, buf.index);
MACs2c = hash.digest();
try
{
Type c;
string method;
method = guess[KeyExchange.PROPOSAL_ENC_ALGS_STOC];
c = Type.GetType(getConfig(method));
s2ccipher = (Cipher)(c.newInstance());
while (s2ccipher.getBlockSize() > Es2c.Length)
{
buf.reset();
buf.putMPInt(K);
buf.putByte(H);
buf.putByte(Es2c);
hash.update(buf.buffer, 0, buf.index);
byte[] foo = hash.digest();
byte[] bar = new byte[Es2c.Length + foo.Length];
Array.Copy(Es2c, 0, bar, 0, Es2c.Length);
Array.Copy(foo, 0, bar, Es2c.Length, foo.Length);
Es2c = bar;
}
s2ccipher.init(Cipher.DECRYPT_MODE, Es2c, IVs2c);
s2ccipher_size = s2ccipher.getIVSize();
method = guess[KeyExchange.PROPOSAL_MAC_ALGS_STOC];
c = Type.GetType(getConfig(method));
s2cmac = (MAC)(c.newInstance());
s2cmac.init(MACs2c);
//mac_buf=new byte[s2cmac.getBlockSize()];
s2cmac_result1 = new byte[s2cmac.getBlockSize()];
s2cmac_result2 = new byte[s2cmac.getBlockSize()];
method = guess[KeyExchange.PROPOSAL_ENC_ALGS_CTOS];
c = Type.GetType(getConfig(method));
c2scipher = (Cipher)(c.newInstance());
while (c2scipher.getBlockSize() > Ec2s.Length)
{
buf.reset();
buf.putMPInt(K);
buf.putByte(H);
buf.putByte(Ec2s);
hash.update(buf.buffer, 0, buf.index);
byte[] foo = hash.digest();
byte[] bar = new byte[Ec2s.Length + foo.Length];
Array.Copy(Ec2s, 0, bar, 0, Ec2s.Length);
Array.Copy(foo, 0, bar, Ec2s.Length, foo.Length);
Ec2s = bar;
}
c2scipher.init(Cipher.ENCRYPT_MODE, Ec2s, IVc2s);
c2scipher_size = c2scipher.getIVSize();
method = guess[KeyExchange.PROPOSAL_MAC_ALGS_CTOS];
c = Type.GetType(getConfig(method));
c2smac = (MAC)(c.newInstance());
c2smac.init(MACc2s);
method = guess[KeyExchange.PROPOSAL_COMP_ALGS_CTOS];
initDeflater(method);
method = guess[KeyExchange.PROPOSAL_COMP_ALGS_STOC];
initInflater(method);
}
catch (Exception e)
{
if (e is JSchException)
throw e;
throw new JSchException(e.ToString(), e);
//Console.Error.WriteLine("updatekeys: "+e);
}
}