feat(aztec-nr): wire constrained tagging into message delivery#23867
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feat(aztec-nr): wire constrained tagging into message delivery#23867vezenovm wants to merge 1 commit into
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Add emit_nullifier_and_compute_constrained_tag (and compute_constrained_log_tag) and replace the builder's mocked constrained tagging with the real handshake- derived discovery tag plus the per-send chain nullifier. Extend the test contract with constrained note / maybe-note / event delivery and the negative nullifier-chain case, and add an end-to-end test. NOTE: the e2e and contract TXE tests require the TXE harness (yarn-project/txe server) to run. The e2e test predates fairies' handshake-registry graduation (#23833) and recipient-side discovery (#23806); reconcile it with the new discovery before relying on it.
This was referenced Jun 4, 2026
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Fixes F-670
do_private_message_deliveryresolves the handshake secret, emits the per-send chain nullifier, and derives the constrained log tag.compute_constrained_log_tagandemit_nullifier_and_compute_constrained_tag.Stacked on #23865 (F-697) and #23866 (F-669).