Eric Rescorla <e...@rtfm.com> writes:

> To be honest, I think this document is working too hard in both cases to
> try to legislate that people don't do things that we think are bad. The
> bottom
> line is that in both cases the boundaries around what we think is OK and
> what we think is not are kind of fuzzy (as you illustrate above with
> Curve25519). Rather than try to write RFC 2919 language about this,
> it would be better to simply describe the consequences of bad choices,
> and say that the function must be collision resistant, and stop.

I don't understand the RFC2919 reference.  Did you mean a different RFC,
or is there some IETF lore about this being an overly-specified RFC?

The thing is, there is definitely historical precedent for intentionally
choosing weak crypto algorithms.  And while I hope the truly bad old
days are behind us, I still think it's important that we abstract some
base level of security out of TCP-ENO so that most applications don't
need to whitelist TEP identifiers.

David

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