cvs encryption question

[gaoth]

My first question is how the cvsuser's password generate.I konw the password generation uses the "encrypt",maybe like "password=encrypt(plainpassword,salt)",but i am not clear that if the salt is fixed,if yes what is it?if not how does it generate?   The other question is :i want to make my cvs server support anonymous login,so i put one line in my passwd file like this"anoyymous::sysusr",but it didn't work when i login from a remote computer useing pserver mode,what is the problem?   Thanks in mind. Merry Christmas to all.