34128d8e98
Update go.mod module line, all require/replace directives, and every .go import path from forge.lthn.ai/core/go-blockchain to dappco.re/go/core/blockchain. Add replace directives to bridge dappco.re paths to existing forge.lthn.ai registry during migration. Update CLAUDE.md, README, and docs to reflect the new module path. Co-Authored-By: Virgil <virgil@lethean.io>
76 lines
2 KiB
Go
76 lines
2 KiB
Go
// Copyright (c) 2017-2026 Lethean (https://lt.hn)
|
|
//
|
|
// Licensed under the European Union Public Licence (EUPL) version 1.2.
|
|
// You may obtain a copy of the licence at:
|
|
//
|
|
// https://joinup.ec.europa.eu/software/page/eupl/licence-eupl
|
|
//
|
|
// SPDX-License-Identifier: EUPL-1.2
|
|
|
|
package wallet
|
|
|
|
import (
|
|
"fmt"
|
|
|
|
coreerr "dappco.re/go/core/log"
|
|
|
|
"dappco.re/go/core/blockchain/rpc"
|
|
"dappco.re/go/core/blockchain/types"
|
|
)
|
|
|
|
// RingMember is a public key and global index used in ring construction.
|
|
type RingMember struct {
|
|
PublicKey types.PublicKey
|
|
GlobalIndex uint64
|
|
}
|
|
|
|
// RingSelector picks decoy outputs for ring signatures.
|
|
type RingSelector interface {
|
|
SelectRing(amount uint64, realGlobalIndex uint64, ringSize int) ([]RingMember, error)
|
|
}
|
|
|
|
// RPCRingSelector fetches decoys from the daemon via RPC.
|
|
type RPCRingSelector struct {
|
|
client *rpc.Client
|
|
}
|
|
|
|
// NewRPCRingSelector returns a RingSelector backed by the given RPC client.
|
|
func NewRPCRingSelector(client *rpc.Client) *RPCRingSelector {
|
|
return &RPCRingSelector{client: client}
|
|
}
|
|
|
|
// SelectRing fetches random outputs from the daemon and returns ringSize
|
|
// decoy members, excluding the real output and any duplicates.
|
|
func (s *RPCRingSelector) SelectRing(amount uint64, realGlobalIndex uint64, ringSize int) ([]RingMember, error) {
|
|
outs, err := s.client.GetRandomOutputs(amount, ringSize+5)
|
|
if err != nil {
|
|
return nil, coreerr.E("RPCRingSelector.SelectRing", "wallet: get random outputs", err)
|
|
}
|
|
|
|
var members []RingMember
|
|
seen := map[uint64]bool{realGlobalIndex: true}
|
|
|
|
for _, out := range outs {
|
|
if seen[out.GlobalIndex] {
|
|
continue
|
|
}
|
|
seen[out.GlobalIndex] = true
|
|
|
|
pk, err := types.PublicKeyFromHex(out.PublicKey)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
members = append(members, RingMember{
|
|
PublicKey: pk,
|
|
GlobalIndex: out.GlobalIndex,
|
|
})
|
|
if len(members) >= ringSize {
|
|
break
|
|
}
|
|
}
|
|
|
|
if len(members) < ringSize {
|
|
return nil, coreerr.E("RPCRingSelector.SelectRing", fmt.Sprintf("wallet: insufficient decoys: got %d, need %d", len(members), ringSize), nil)
|
|
}
|
|
return members, nil
|
|
}
|