[Lightning-dev] Backward deterministic R Value

Nicolas Dorier nicolas.dorier at gmail.com
Tue Mar 8 04:53:55 UTC 2016

Great, indeed we had same idea, I don't see how it solve the hashes in
As Alice knows

H(1000000) = <random secret seed>).

If she need the hash to the first commitment she need to hash the random secret
seed 1000000 times. I think it is exactly the same problem as it is the exact
same idea said differently.

On Tue, Mar 8, 2016 at 8:31 AM, Rusty Russell <rusty at rustcorp.com.au> wrote:

> Nicolas Dorier <nicolas.dorier at gmail.com> writes:
> > One way deterministic RValue Generation
> Hi Nicolas,
>         Yes, in fact shachain is a variant of this which avoids
> generating several million hashes in advance.  Interesting, I suggested
> using hashing in the Deployable Lightning paper but didn't actually
> spell out the idea.  Hmm....
> Seems like it orignated from Adam Back:
> https://lists.blockstream.io/pipermail/lightning-dev/2015-May/000000.html
> Cheers,
> Rusty.
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