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zeekay f63b76cde3 name the work this is derived from

The license text travelled with the code but nothing said whose code it was,
so a reader had to infer the origin from a directory name or a line of README
left over from upstream. A NOTICE states it: the project, the terms it came
under, and the copyright holder to reproduce.

2026-09-06 03:12:12 -07:00

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LUXFI-FORK

This is a luxfi-maintained fork of crate-crypto/go-ipa.

Upstream branch: master
Commit SHA: 53bbb0ceb27adb011950fd0fce885ad6d4516f84 (2024-07-24)
License: Apache-2.0 or MIT (see LICENSE-APACHE, LICENSE-MIT, NOTICE)

Why this fork exists

go-ipa provides Bandersnatch + IPA primitives in Go. luxfi consumes the KAT vectors and Bandersnatch curve params for:

luxcpp/crypto/banderwagon/ — first-party C++ port (LP-137 #101)
luxcpp/crypto/ipa/ — IPA + Pedersen + Verkle (LP-137 sibling #104)
lux/crypto Go layer — replaces github.com/crate-crypto/go-ipa via go.mod replace directive

Owning the fork pins the Bandersnatch parameters (q, A, D, generators) so upstream parameter churn cannot silently invalidate Pedersen commitments already on chain.

Sync policy

Track upstream master snapshots only.
Pull into sync/<yyyy-mm-dd> branches. Re-run Bandersnatch + IPA KATs in luxcpp/crypto/{banderwagon,ipa}. Merge to master only when KATs match.
Curve parameter changes are a hard stop — open an issue, do not merge.

Maintainer

luxfi crypto team. Contact via the luxfi/crypto repo.

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LUXFI-FORK

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Why this fork exists

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Maintainer

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