Thor Lancelot Simon <tls@rek.tjls.com> writes:

> Will you please explain where and how, exactly, it is legal to build
> and use an implementation of IDEA without a license to a patent
> which we do not have, and which it is not a valid assumption that
> the majority or even a significant minority of our users or
> developers have?

http://www.ascom.ch/infosec/idea/licensing.html

    ...
    Because Ascom Ltd. wants to make this highly secure algorithm
    widely available, the non-commercial use of this algorithm is
    free.
    ...

Or did you really mean RSA?

/Johan