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https://github.com/luxfi/chains.git
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zeekayandHanzo Dev
bbce4b6975
Under LP-0130's canonical roster, chains/thresholdvm/ hosts the M-Chain VM (MPC threshold signing). The package name "thresholdvm" was the last piece of T-Chain nomenclature still shipping in code — legacy from the pre-LP-134 shared-substrate design. Renamed to mpcvm/ so the package name matches the M-Chain letter and LP-7100 spec. - chains/thresholdvm/ → chains/mpcvm/ (dir + inner files + package decl) - Sed-replace thresholdvm → mpcvm across .go / .md / .yml / .json / .sh - Fee/settlement primitive references now say mpcvm - LLM.md canonical chain roster (LP-0130) already points at mpcvm/ F-Chain runtime pieces (fhe/, protocol/tfhe_keygen/, runtime/f_chain_adapter.go) stay under mpcvm/ for now — they consume the same shared threshold primitives. A follow-up extract to chains/fhevm/ can happen once F-Chain runtime graduates. Co-authored-by: Hanzo Dev <[email protected]>
56 lines
2.0 KiB
Go
56 lines
2.0 KiB
Go
// Copyright (C) 2019-2026, Lux Industries Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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// Package warpmsg is the single, canonical place in chains that builds,
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// signs, and wraps a single-signer Warp message.
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//
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// Every VM that emits a cross-chain Warp message — bridgevm reshare gossip,
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// zkvm FHE task callbacks, mpcvm decryption fulfillments — calls
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// BuildSigned. The build→sign→wrap sequence lives here and nowhere else, so
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// there is exactly one way to turn (networkID, sourceChainID, payload) into a
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// transmittable signed Warp envelope.
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package warpmsg
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import (
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"fmt"
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"github.com/luxfi/ids"
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"github.com/luxfi/warp"
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)
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// BuildSigned builds a Warp content Message for (networkID, sourceChainID,
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// payload), signs it with the node's BLS key over the Beam domain, and wraps
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// the signature into a single-signer Envelope.
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//
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// The signer is the local node's warp.Signer (BLS); it signs
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// BeamSigningBytes(message.ID()). The resulting signature is placed at
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// validator bit index 0 — the single-signer convention every chains VM uses
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// before the receiver aggregates and verifies the Beam BitSetSignature
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// against the canonical validator set (warp.VerifyEnvelope). The returned
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// Envelope is therefore the complete, transmittable, verifiable signed
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// message: env.Bytes() for the wire, env.Message for the authenticated
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// content.
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func BuildSigned(signer warp.Signer, networkID uint32, sourceChainID ids.ID, payload []byte) (*warp.Envelope, error) {
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msg, err := warp.NewMessage(networkID, sourceChainID, payload)
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if err != nil {
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return nil, fmt.Errorf("build warp message: %w", err)
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}
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sigBytes, err := signer.Sign(msg)
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if err != nil {
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return nil, fmt.Errorf("sign warp message: %w", err)
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}
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var sig [warp.SignatureLen]byte
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copy(sig[:], sigBytes)
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signers := warp.NewBitSet()
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signers.Add(0)
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env, err := warp.NewEnvelope(msg, warp.NewBitSetSignature(signers, sig), nil, nil)
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if err != nil {
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return nil, fmt.Errorf("wrap warp envelope: %w", err)
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}
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return env, nil
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}
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