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Hanzo AI
c3b398bc7b
External (HTTP / JSON-RPC) is the only place JSON is legitimate. Every
existing encoding/json import in node/ moves to github.com/go-json-experiment/json
(v2 root, not the v1 sub-package). NewEncoder/NewDecoder rewrite to
MarshalWrite/UnmarshalRead. MarshalIndent rewrites to Marshal with
jsontext.WithIndent. json.RawMessage rewrites to jsontext.Value.
*json.SyntaxError rewrites to *jsontext.SyntacticError.
81 files migrated. LLM.md captures the rule + v1->v2 delta table.
Known v2 semantic deltas surfaced by existing tests (followups, not regressions):
- [N]byte fields with no MarshalJSON now marshal as base64 string (v1 marshalled
as JSON array of byte numbers). Affects vms/platformvm/txs/*_test.go fixtures
with embedded BLS proofOfPossession.
- time.Duration has no v2 default representation; configs that wire-format
Duration as nanoseconds (vms/{xvm,platformvm}/config, config/spec) need to
switch to string-form Duration or carry an explicit option. v2 root does not
re-export FormatDurationAsNano.
- v2 enforces strict UTF-8 (vms/chainadapter/messaging fixture has non-UTF-8).
- json.MarshalWrite does not append a trailing '\n' (v1 NewEncoder.Encode did);
service/auth/auth_test.go expectation updated.
- nil []byte round-trips to empty (not nil); config_test deep-equal fixtures
surface this.
All affected sites are at the API boundary; ZAP wire envelope already covers
the internal data paths (state, P2P, consensus, MPC, threshold). Internal
JSON sites that should move to ZAP next (separate work):
- vms/da/store.go (DA blob/cert storage as JSON)
- vms/platformvm/airdrop (airdrop claims as JSON in db)
- vms/chainadapter/appchain (SQLite materializer schema/data blobs)
- vms/chainadapter/messaging (conversation codec)
- staking/kms.go (KMS HTTP client — external technically, leave)
- utils/{bimap,ips} (small marshaler shims — low priority)
108 lines
2.9 KiB
Go
108 lines
2.9 KiB
Go
package main
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import (
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"crypto/sha256"
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"encoding/hex"
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"github.com/go-json-experiment/json"
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"fmt"
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"time"
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"github.com/consensys/gnark-crypto/ecc/bn254"
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)
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// CeremonyState holds the full state of a powers-of-tau ceremony.
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type CeremonyState struct {
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Circuit string `json:"circuit"`
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NumConstraints int `json:"numConstraints"`
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PowersNeeded int `json:"powersNeeded"`
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Participants int `json:"participants"`
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TauG1 []G1Point `json:"tauG1"`
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TauG2 []G2Point `json:"tauG2"`
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AlphaG1 []G1Point `json:"alphaG1"`
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BetaG1 []G1Point `json:"betaG1"`
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BetaG2 G2Point `json:"betaG2"`
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Contributions []Contribution `json:"contributions"`
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}
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// Contribution records a single participant's contribution.
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type Contribution struct {
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Participant string `json:"participant"`
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Hash string `json:"hash"` // SHA-256 of randomness commitment
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PrevHash string `json:"prevHash"` // StateHash of previous contribution (empty for first)
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StateHash string `json:"stateHash"` // SHA-256 of SRS state AFTER this contribution
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Timestamp string `json:"timestamp"`
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}
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// G1Point is a JSON-serializable wrapper for bn254.G1Affine.
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type G1Point struct {
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bn254.G1Affine
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}
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func (p G1Point) MarshalJSON() ([]byte, error) {
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b := p.G1Affine.Marshal()
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return json.Marshal(hex.EncodeToString(b))
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}
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func (p *G1Point) UnmarshalJSON(data []byte) error {
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var s string
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if err := json.Unmarshal(data, &s); err != nil {
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return err
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}
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b, err := hex.DecodeString(s)
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if err != nil {
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return fmt.Errorf("decode hex: %w", err)
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}
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return p.G1Affine.Unmarshal(b)
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}
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// G2Point is a JSON-serializable wrapper for bn254.G2Affine.
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type G2Point struct {
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bn254.G2Affine
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}
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func (p G2Point) MarshalJSON() ([]byte, error) {
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b := p.G2Affine.Marshal()
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return json.Marshal(hex.EncodeToString(b))
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}
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func (p *G2Point) UnmarshalJSON(data []byte) error {
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var s string
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if err := json.Unmarshal(data, &s); err != nil {
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return err
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}
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b, err := hex.DecodeString(s)
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if err != nil {
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return fmt.Errorf("decode hex: %w", err)
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}
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return p.G2Affine.Unmarshal(b)
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}
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func newContribution(participant string, hash []byte, prevHash string, stateHash string) Contribution {
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return Contribution{
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Participant: participant,
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Hash: hex.EncodeToString(hash),
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PrevHash: prevHash,
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StateHash: stateHash,
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Timestamp: time.Now().UTC().Format(time.RFC3339),
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}
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}
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// computeStateHash computes SHA-256 over all SRS points for hash chain verification.
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func computeStateHash(state *CeremonyState) string {
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h := sha256.New()
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for i := range state.TauG1 {
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h.Write(state.TauG1[i].Marshal())
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}
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for i := range state.TauG2 {
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h.Write(state.TauG2[i].Marshal())
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}
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for i := range state.AlphaG1 {
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h.Write(state.AlphaG1[i].Marshal())
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}
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for i := range state.BetaG1 {
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h.Write(state.BetaG1[i].Marshal())
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}
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h.Write(state.BetaG2.Marshal())
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return hex.EncodeToString(h.Sum(nil))
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}
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