Regarding sha: There is some work that I have triggered in the ZoKrates 
community that has made a format for r1cs and a little tool that exports r1cs 
from libsnark (and another one that imports them into ZoKrates),

It would be worth taking a look (see here for updates: 
https://github.com/JacobEberhardt/ZoKrates/issues/19 )

Nicola Greco
- Keep on rocking the free web

On Mar 13, 2018, 8:14 AM +0100, Sean Bowe via zapps-wg 
<zapps...@lists.z.cash.foundation>, wrote:
> This is _very_ cool, thanks for sharing it with us! It looks like the
> best DSL for R1CS that I've ever seen.
>
> I encourage you to also share this with the Bitcoin community
> (bitcoin-dev mailing list.) Bulletproofs support R1CS as well.
>
> Have you written a SHA256 gadget with this library?
>
> Sean
>
> On Mon, Mar 12, 2018 at 1:17 PM, Andrew Miller via zapps-wg
> <zapps...@lists.z.cash.foundation> wrote:
> > This is really cool, thank you for posting here!! I love the overloading and
> > monadic approach to EDSL in ocaml. It's very much in the style of Snarklib
> > (and of Viff in the MPC world rather than zksnark world).
> >
> > On Mon, Mar 12, 2018 at 1:31 PM, Izaak Meckler via zapps-wg
> > <zapps...@lists.z.cash.foundation> wrote:
> > >
> > > Hi all,
> > >
> > > Wanted to announce the initial release of a new high-level language called
> > > Snarky for writing verifiable computations. Computations are compiled down
> > > into rank 1 constraint systems and then passed off to a SNARK 
> > > construction.
> > > It’s implemented as an OCaml embedded DSL and is parametrized over the 
> > > SNARK
> > > construction (right now only libsnark backends are provided with the 
> > > library
> > > but users can add their own).
> > >
> > > The code is on GitHub (example file here) and there is a blog post
> > > explaining the design at a high-level. Please don’t hesitate to get in 
> > > touch
> > > if you have any comments!
> > >
> > > Izaak
> >
> >
> >
> >
> > --
> > Andrew Miller
> > University of Illinois at Urbana-Champaign

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