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pulsar: README — Module-LWE identity; v0.1.x R-LWE legacy retired

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The legacy v0.1.0..v0.1.5 tags pointed at the prior Ring-LWE code line
and have been deleted from this repository to prevent
`go get github.com/luxfi/[email protected]` from silently pulling R-LWE
code under the new Module-LWE identity.

Ring-LWE code lives at github.com/luxfi/corona (inherits v0.1.x
history under its proper name). This repository is Module-LWE only,
starting at v1.0.0.
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> generated signatures are verifiable by **unmodified FIPS 204 ML-DSA
> verification**. Targeting NIST MPTC Class N1 (signing) + N4 (ML keygen / DKG).
`Pulsar` is the Module-LWE sibling of [Pulsar](https://github.com/luxfi/pulsar)
(Ring-LWE). Pulsar's 2-round threshold protocol structure is transplanted onto
ML-DSA-65's polynomial-vector-over-`R_q` algebra so the per-party-aggregated
signature is bit-identical to a single-party FIPS 204 signature on the same
message + public key.
`Pulsar` is the Lux **Module-LWE** post-quantum threshold signature library.
Its 2-round threshold protocol structure operates on ML-DSA-65's polynomial-
vector-over-`R_q` algebra so the per-party-aggregated signature is bit-
identical to a single-party FIPS 204 signature on the same message + public
key. The Ring-LWE sibling library is [`luxfi/corona`](https://github.com/luxfi/corona).
## Version note
This repository previously held the Ring-LWE codebase under tags `v0.1.0`,
`v0.1.1`, `v0.1.2`, and `v0.1.5`. Following the 2026 Pulsar / Corona split:
- **Ring-LWE** code moved to [`luxfi/corona`](https://github.com/luxfi/corona),
inheriting the `v0.1.x` history under the new name.
- **Module-LWE** code (this repository) starts at `v1.0.0` to signal the
identity break.
Use:
```sh
go get github.com/luxfi/[email protected] # Module-LWE (this repo)
go get github.com/luxfi/[email protected] # Ring-LWE (sibling repo)
```
The legacy `v0.1.x` tags on this repository have been retired. If you
need the historical Ring-LWE code line, pin `luxfi/[email protected]`.
## Quasar composition
Both libraries are independently complete; `luxfi/consensus/protocol/quasar`
consumes them as parallel kernels selected per-chain via `FinalitySchemeID`.
> **Status: Research / Reference (not production hardened, not FIPS validated).**
> NIST-profile vectors use SHAKE / cSHAKE / KMAC. Any BLAKE3 deltas are