Re: depleting the random number generator

[David Wagner]

In article <v04011700b3c0b0807cfc@[24.218.56.100]>,
Arnold G. Reinhold <[EMAIL PROTECTED]> wrote:
> One nice advantage of using RC4 as a nonce generator is that you can easily
> switch back and forth between key setup and code byte generation. You can
> even do both at the same time. (There is no need to reset the index
> variables.) This allows you to intersperse entropy deposits and withdrawals
> at will.

Oh dear!  This suggestion worries me.
Is it reasonable to expect this arrangement to be secure
against e.g. chosen-entropy attacks?