why does ssh expect LF instead of CR at password prompt?

[Bryan Christ]

I am writing a terminal and just about every piece of software expects 
CR as the enter key and not LF.  I have noticed this behavior with "su" 
as well and am hoping someone can explain why.

Thanks in advance,
Bryan
Fedora Core 6
OpenSSH_4.3p2, OpenSSL 0.9.8b 04 May 2006