Just get it and throw it away, it is easier than iterating the algorithms of
the providers.
> Am 12.12.2014 um 05:02 schrieb Weijun Wang <weijun.w...@oracle.com>:
>
> I'd like to check if "SHA-256" is supported without calling
> MessageDigest.getInstance("SHA-256"). Does such a method exist?
>
> My case is a multi-thread digestor like this:
>
> class Digestor {
> Digestor(String alg) throws NSAE;
> @ThreadSafe byte[] digest(byte[]) throws Nothing;
> }
>
> So a Digestor is created and multiple threads can call the digest() method. I
> would be glad if the constructor can throw an NSAE but not creating a
> MessageDigest object because I don't know how to safely use it inside
> digest().
>
> Thanks
> Max
