Thanks Illari, the proposed change looks good to me. I updated
https://github.com/ietf-wg-jose/draft-ietf-jose-hpke-encrypt/pull/76,
please check.

Cheers,
-Tiru

On Tue, 28 Oct 2025 at 00:39, Ilari Liusvaara <[email protected]>
wrote:

> On Mon, Oct 27, 2025 at 04:37:51PM +0530, tirumal reddy wrote:
> > Thanks, Orie, for the detailed explanation. I’ve updated PR #76
> > <https://github.com/ietf-wg-jose/draft-ietf-jose-hpke-encrypt/pull/76>
> to
> > address these points. The recipient_protected_header has been removed,
> and
> > the next_layer_alg field has been made mandatory, along with added
> > rationale for its inclusion.
>
> I think binary encoding would be better here, as it would be much
> simpler and much more compact (space is at premium here, as the maximum
> portable info size is 64 bytes). E.g.:
>
> "JOSE-HPKE
> rcpt"+BYTE(255)+ASCII(next_layer_alg)+BYTE(255)+recipient_extra_info
>
>
> (Substitute ASCII->UTF8 to encode illegal algorithm names, or
> ASCII->WTF8 to encode even more illegal ones.)
>
>
> E.g., A256GCM without extra info gives:
>
> "JOSE-HPKE rcpt\xffA256GCM\xff" (23 bytes)
>
>
>
>
> -Ilari
>
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