[svlug] multiple sessions in one telnet

[Seth David Schoen]

Rafael writes:

> What's preventing somebody to write a new encryption function and
> implement it as an algorithm in useful software like ssh or it's
> replacement? There must be more to encryption than the above mentioned
> methods. Not easy of course, but doable imo. Compatibility would be an
> issue but it would be useful for point to point communications or a single
> site implementation. Blowfish is mentioned here and there as one of
> possible methods for encryption. That one is not patented, is it?

Blowfish isn't patented and is already implemented in ssh (Ylonen's
version as well as OpenSSH).  You don't need IDEA unless you trust
it more than all the unpatented block ciphers (at least Blowfish
and 3DES).

bash-2.03$ ssh -v -c blowfish -l sigma ishmael.loyalty.org
SSH Version OpenSSH-1.2.3, protocol version 1.5.
Compiled with SSL.
debug: Reading configuration data /etc/ssh/ssh_config
debug: Applying options for *
debug: ssh_connect: getuid 1012 geteuid 1012 anon 1
debug: Connecting to ishmael.loyalty.org [63.76.72.130] port 22.
debug: Connection established.
debug: Remote protocol version 1.5, remote software version 1.2.27
debug: Waiting for server public key.
debug: Received server public key (768 bits) and host key (1024 bits).
debug: Host 'ishmael.loyalty.org' is known and matches the host key.
debug: Encryption type: blowfish
debug: Sent encrypted session key.
debug: Installing crc compensation attack detector.
debug: Received encrypted confirmation.
debug: Doing password authentication.
sigma at ishmael.loyalty.org's password: 
debug: Requesting pty.
debug: Requesting shell.
debug: Entering interactive session.
Last login: Mon Jun  5 03:00:18 2000 from appropriate-host
Linux ishmael 2.2.14 #1 Tue Apr 25 10:11:42 EST 2000 i586 unknown

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-- 
Seth David Schoen <schoen at loyalty.org>  | And do not say, I will study when I
Temp.  http://www.loyalty.org/~schoen/  | have leisure; for perhaps you will
down:  http://www.loyalty.org/   (CAF)  | not have leisure.  -- Pirke Avot 2:5