public Proposal(SSHPacket packet) {
this.packet = packet;
final int savedPos = packet.rpos();
packet.rpos(packet.rpos() + 17); // Skip message ID & cookie
kex = fromCommaString(packet.readString());
sig = fromCommaString(packet.readString());
c2sCipher = fromCommaString(packet.readString());
s2cCipher = fromCommaString(packet.readString());
c2sMAC = fromCommaString(packet.readString());
s2cMAC = fromCommaString(packet.readString());
c2sComp = fromCommaString(packet.readString());
s2cComp = fromCommaString(packet.readString());
packet.rpos(savedPos);
}
public Proposal(Config config) {
kex = Factory.Named.Util.getNames(config.getKeyExchangeFactories());
sig = Factory.Named.Util.getNames(config.getSignatureFactories());
c2sCipher = s2cCipher = Factory.Named.Util.getNames(config.getCipherFactories());
c2sMAC = s2cMAC = Factory.Named.Util.getNames(config.getMACFactories());
c2sComp = s2cComp = Factory.Named.Util.getNames(config.getCompressionFactories());
packet = new SSHPacket(Message.KEXINIT);
// Put cookie
packet.ensureCapacity(16);
config.getRandomFactory().create().fill(packet.array(), packet.wpos(), 16);
packet.wpos(packet.wpos() + 16);
// Put algorithm lists
packet.putString(toCommaString(kex));
packet.putString(toCommaString(sig));
packet.putString(toCommaString(c2sCipher));
packet.putString(toCommaString(s2cCipher));
packet.putString(toCommaString(c2sMAC));
packet.putString(toCommaString(s2cMAC));
packet.putString(toCommaString(c2sComp));
packet.putString(toCommaString(s2cComp));
packet.putString("");
packet.putString("");
packet.putBoolean(false); // Optimistic next packet does not follow
packet.putInt(0); // "Reserved" for future by spec
}