Re: Question on BigInteger operations

On Sep 29, 2013 11:32 AM, "Jeffrey Walton" <noloader@gmail.com> wrote:
>
> Hi All/Ryan,
>
> I have an authentication scheme built around Diffie-Hellman over Z_n.
> The scheme uses n_1, n_2, p_1, p_2, s_1, s_2, ..., s_n, where n_1 and
> n_2 are nonces, p_1 and p_2 are public keys, and s_1, s_2, ..., s_n
> are provisioned secrets.
>
> I need the following operations: addition, subtraction,
> multiplication, exponentiation and remainder (modulo). And I possibly
> need a well defined toByteArray() to ensure I get consistent bit
> patterns across platforms when I want to do something like
> Hash(BigInteger).
>
> Looking at http://www.w3.org/TR/WebCryptoAPI/#big-integer, I don't see
> any operations defined on the BigInteger.
>
> What operations will I be allowed to perform on BigInteger's?
>
> Jeff

None. It is just a storage type.

You can see the archives for when we debated this at great length
(including our last face to face), about the right level of abstraction.
>