[Haskell-cafe] Fingerprinting Haskell Objects

[Ozgun Ataman]

On Tue, Oct 7, 2014 at 5:15 PM, Alexander Kjeldaas <
alexander.kjeldaas at gmail.com> wrote:

>
> Assuming the Generic instance is a stable interface, I would create a
> traversal of that, feeding directly into a Blake2b-implementation (a fast
> SHA3 finalist, tweaked).
>
>
> This gives you a cryptographically strong fingerprint, space usage is
> flexible (extract as many bytes as you want), is fast (~1GB/s), and with
> low complexity/external dependencies.
>
>
> Alexander
>

Thank you for the reply. My own thinking has been along similar lines of
finding a stable serialization for the record. Hashing is certainly a nice
way to compress the result - one I've used myself in the past. However, can
we really consider Generic a stable interface?
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