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examples: port bitcoin/ethereum/lux/solana/tfhe MPC signing demos from hanzoai/mpc
Consolidate the hanzoai/mpc repo into luxfi/mpc (the canonical, deployed MPC — v1.16.0, running as ghcr.io/luxfi/mpc across all clusters). hanzoai/mpc (legacy v1.0.6) carried 5 chain-specific threshold-signing examples luxfi/mpc lacked; they already import github.com/luxfi/mpc/pkg/threshold, so this is a clean port. hanzoai/mpc is being archived — nothing imports it and the deployments already run luxfi/mpc.
This commit is contained in:
@@ -0,0 +1,98 @@
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// Copyright (c) 2024-2025 Hanzo AI Inc.
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// SPDX-License-Identifier: BSD-3-Clause
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// Bitcoin Threshold Signing Example
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// Demonstrates both Legacy/SegWit (ECDSA) and Taproot (Schnorr) signing
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package main
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import (
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"crypto/sha256"
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"encoding/hex"
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"fmt"
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"log"
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"github.com/luxfi/mpc/pkg/threshold"
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)
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func main() {
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fmt.Println("=== Bitcoin Threshold Signing Examples ===")
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fmt.Println()
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// Create unified threshold API
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api := threshold.NewUnifiedThresholdAPI()
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defer api.Close()
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// Define 3 MPC nodes with 2-of-3 threshold
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partyIDs := []string{"node1", "node2", "node3"}
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thresholdValue := 1 // t=1 means 2-of-3 (t+1 signers required)
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// Example 1: Bitcoin Legacy/SegWit (ECDSA/secp256k1)
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fmt.Println("1. Bitcoin Legacy/SegWit Transaction Signing")
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fmt.Println(" Protocol: CGGMP21 (ECDSA on secp256k1)")
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fmt.Println(" Use case: P2PKH, P2SH, P2WPKH, P2WSH addresses")
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fmt.Println()
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legacyParty, err := api.KeyGen(threshold.SchemeECDSA, "node1", partyIDs, thresholdValue)
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if err != nil {
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log.Fatalf("Failed to start Legacy keygen: %v", err)
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}
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// Simulate a Bitcoin transaction hash to sign
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// In production: serialized tx -> double SHA256
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txData := []byte("Bitcoin Legacy Transaction Data")
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legacyTxHash := doubleSHA256(txData)
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fmt.Printf(" ✓ Key generation initiated\n")
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fmt.Printf(" ✓ Transaction hash: %s\n", hex.EncodeToString(legacyTxHash[:16])+"...")
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fmt.Printf(" ✓ Threshold: %d-of-%d signers required\n", thresholdValue+1, len(partyIDs))
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fmt.Printf(" ✓ Party status: Done=%v\n", legacyParty.Done())
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fmt.Println()
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// Example 2: Bitcoin Taproot (Schnorr/BIP-340)
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fmt.Println("2. Bitcoin Taproot Transaction Signing")
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fmt.Println(" Protocol: FROST (Schnorr on secp256k1)")
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fmt.Println(" Use case: P2TR addresses, script path spending")
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fmt.Println()
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taprootParty, err := api.KeyGen(threshold.SchemeTaproot, "node2", partyIDs, thresholdValue)
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if err != nil {
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log.Fatalf("Failed to start Taproot keygen: %v", err)
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}
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// Taproot uses tagged hashes (BIP-340)
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taprootTxHash := taggedHash("TapSighash", txData)
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fmt.Printf(" ✓ Key generation initiated\n")
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fmt.Printf(" ✓ Tagged hash: %s\n", hex.EncodeToString(taprootTxHash[:16])+"...")
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fmt.Printf(" ✓ Threshold: %d-of-%d signers required\n", thresholdValue+1, len(partyIDs))
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fmt.Printf(" ✓ Party status: Done=%v\n", taprootParty.Done())
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fmt.Println()
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// Summary
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fmt.Println("=== Bitcoin MPC Benefits ===")
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fmt.Println(" • No single point of failure for private keys")
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fmt.Println(" • Distributed custody across multiple parties")
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fmt.Println(" • Standard Bitcoin transactions (indistinguishable on-chain)")
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fmt.Println(" • Taproot: smaller signatures, better privacy")
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fmt.Println(" • Legacy: broad wallet compatibility")
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fmt.Println()
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fmt.Println("✅ Bitcoin threshold signing ready!")
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}
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// doubleSHA256 computes SHA256(SHA256(data)) for Bitcoin tx signing
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func doubleSHA256(data []byte) [32]byte {
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first := sha256.Sum256(data)
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return sha256.Sum256(first[:])
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}
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// taggedHash computes SHA256(SHA256(tag) || SHA256(tag) || msg) per BIP-340
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func taggedHash(tag string, msg []byte) [32]byte {
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tagHash := sha256.Sum256([]byte(tag))
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h := sha256.New()
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h.Write(tagHash[:])
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h.Write(tagHash[:])
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h.Write(msg)
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var result [32]byte
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copy(result[:], h.Sum(nil))
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return result
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}
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@@ -0,0 +1,176 @@
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// Copyright (c) 2024-2025 Hanzo AI Inc.
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// SPDX-License-Identifier: BSD-3-Clause
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// Ethereum/EVM Threshold Signing Example
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// Demonstrates threshold ECDSA signing for Ethereum and EVM-compatible chains
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package main
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import (
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"encoding/hex"
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"fmt"
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"log"
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"math/big"
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"github.com/luxfi/mpc/pkg/threshold"
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"golang.org/x/crypto/sha3"
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)
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func main() {
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fmt.Println("=== Ethereum/EVM Threshold Signing Example ===")
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fmt.Println()
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// Create unified threshold API
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api := threshold.NewUnifiedThresholdAPI()
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defer api.Close()
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// Define MPC nodes with 2-of-3 threshold
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partyIDs := []string{"signer1", "signer2", "signer3"}
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thresholdValue := 1 // 2-of-3 threshold
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fmt.Println("1. Ethereum Transaction Signing")
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fmt.Println(" Protocol: CGGMP21 (ECDSA on secp256k1)")
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fmt.Println(" Compatible: Ethereum, Polygon, BSC, Arbitrum, Optimism, Avalanche C-Chain")
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fmt.Println()
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// Initialize key generation
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party, err := api.KeyGen(threshold.SchemeECDSA, "signer1", partyIDs, thresholdValue)
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if err != nil {
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log.Fatalf("Failed to start keygen: %v", err)
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}
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// Example EIP-155 transaction (Ethereum mainnet)
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tx := &EthTransaction{
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Nonce: uint64(42),
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GasPrice: big.NewInt(50_000_000_000), // 50 Gwei
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GasLimit: uint64(21000),
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To: "0x742d35Cc6634C0532925a3b844Bc9e7595f1D123",
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Value: big.NewInt(1_000_000_000_000_000_000), // 1 ETH
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Data: []byte{},
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ChainID: big.NewInt(1), // Mainnet
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}
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// Compute transaction hash (Keccak256)
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txHash := tx.Hash()
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fmt.Printf(" ✓ Key generation initiated\n")
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fmt.Printf(" ✓ Transaction details:\n")
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fmt.Printf(" - Nonce: %d\n", tx.Nonce)
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fmt.Printf(" - Gas Price: %s Gwei\n", new(big.Int).Div(tx.GasPrice, big.NewInt(1_000_000_000)))
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fmt.Printf(" - Gas Limit: %d\n", tx.GasLimit)
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fmt.Printf(" - To: %s\n", tx.To)
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fmt.Printf(" - Value: %s ETH\n", formatEther(tx.Value))
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fmt.Printf(" - Chain ID: %d (Mainnet)\n", tx.ChainID)
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fmt.Printf(" ✓ TX Hash: 0x%s\n", hex.EncodeToString(txHash[:16])+"...")
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fmt.Printf(" ✓ Threshold: %d-of-%d signers required\n", thresholdValue+1, len(partyIDs))
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fmt.Printf(" ✓ Party status: Done=%v\n", party.Done())
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fmt.Println()
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// Example 2: ERC-20 Token Transfer
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fmt.Println("2. ERC-20 Token Transfer")
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fmt.Println()
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// ERC-20 transfer function signature: transfer(address,uint256)
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transferData := encodeERC20Transfer(
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"0x1234567890123456789012345678901234567890",
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big.NewInt(1000_000_000_000_000_000), // 1 token (18 decimals)
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)
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erc20Tx := &EthTransaction{
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Nonce: uint64(43),
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GasPrice: big.NewInt(50_000_000_000),
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GasLimit: uint64(60000),
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To: "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", // Example: USDC
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Value: big.NewInt(0),
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Data: transferData,
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ChainID: big.NewInt(1),
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}
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erc20Hash := erc20Tx.Hash()
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fmt.Printf(" ✓ ERC-20 Transfer encoded\n")
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fmt.Printf(" ✓ Contract: %s\n", erc20Tx.To)
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fmt.Printf(" ✓ TX Hash: 0x%s\n", hex.EncodeToString(erc20Hash[:16])+"...")
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fmt.Println()
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// Supported EVM chains
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fmt.Println("=== Supported EVM Chains ===")
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chains := []struct {
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name string
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chainID int64
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}{
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{"Ethereum Mainnet", 1},
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{"Polygon", 137},
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{"BNB Smart Chain", 56},
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{"Arbitrum One", 42161},
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{"Optimism", 10},
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{"Avalanche C-Chain", 43114},
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{"Base", 8453},
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{"Lux Network", 9000},
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}
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for _, chain := range chains {
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fmt.Printf(" ✓ %s (Chain ID: %d)\n", chain.name, chain.chainID)
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}
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fmt.Println()
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fmt.Println("=== EVM MPC Benefits ===")
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fmt.Println(" • Institutional-grade custody for ETH and tokens")
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fmt.Println(" • Compatible with all ERC-20, ERC-721, ERC-1155 tokens")
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fmt.Println(" • DeFi protocol interaction support")
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fmt.Println(" • Multi-chain deployment with single key setup")
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fmt.Println(" • EIP-712 typed data signing support")
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fmt.Println()
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fmt.Println("✅ Ethereum/EVM threshold signing ready!")
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}
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// EthTransaction represents a simplified Ethereum transaction
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type EthTransaction struct {
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Nonce uint64
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GasPrice *big.Int
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GasLimit uint64
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To string
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Value *big.Int
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Data []byte
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ChainID *big.Int
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}
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// Hash computes the Keccak256 hash of the transaction for signing
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func (tx *EthTransaction) Hash() [32]byte {
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// Simplified: in production use RLP encoding
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h := sha3.NewLegacyKeccak256()
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h.Write(big.NewInt(int64(tx.Nonce)).Bytes())
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h.Write(tx.GasPrice.Bytes())
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h.Write(big.NewInt(int64(tx.GasLimit)).Bytes())
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h.Write([]byte(tx.To))
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h.Write(tx.Value.Bytes())
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h.Write(tx.Data)
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h.Write(tx.ChainID.Bytes())
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var result [32]byte
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copy(result[:], h.Sum(nil))
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return result
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}
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// encodeERC20Transfer encodes an ERC-20 transfer call
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func encodeERC20Transfer(to string, amount *big.Int) []byte {
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// Function selector: keccak256("transfer(address,uint256)")[:4]
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selector := []byte{0xa9, 0x05, 0x9c, 0xbb}
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// Pad address to 32 bytes
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addrBytes := make([]byte, 32)
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copy(addrBytes[12:], []byte(to)[2:22]) // Remove 0x prefix
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// Pad amount to 32 bytes
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amountBytes := make([]byte, 32)
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amount.FillBytes(amountBytes)
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result := make([]byte, 0, 68)
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result = append(result, selector...)
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result = append(result, addrBytes...)
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result = append(result, amountBytes...)
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return result
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}
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// formatEther converts wei to ETH string
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func formatEther(wei *big.Int) string {
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eth := new(big.Float).SetInt(wei)
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divisor := new(big.Float).SetInt(big.NewInt(1_000_000_000_000_000_000))
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eth.Quo(eth, divisor)
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return eth.Text('f', 4)
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}
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@@ -0,0 +1,285 @@
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// Copyright (c) 2024-2025 Hanzo AI Inc.
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// SPDX-License-Identifier: BSD-3-Clause
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// Lux Network Threshold Signing Example
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// Demonstrates threshold signing for Lux Network (X-Chain, P-Chain, C-Chain)
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package main
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import (
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"crypto/sha256"
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"encoding/hex"
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"fmt"
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"log"
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"math/big"
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"github.com/luxfi/mpc/pkg/threshold"
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"golang.org/x/crypto/sha3"
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)
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func main() {
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fmt.Println("=== Lux Network Threshold Signing Example ===")
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fmt.Println()
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// Create unified threshold API
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api := threshold.NewUnifiedThresholdAPI()
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defer api.Close()
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// Define MPC nodes with 2-of-3 threshold
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partyIDs := []string{"validator1", "validator2", "validator3"}
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thresholdValue := 1 // 2-of-3 threshold
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// Example 1: X-Chain (Exchange Chain) - ECDSA/secp256k1
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fmt.Println("1. X-Chain (Exchange Chain) Transaction Signing")
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fmt.Println(" Protocol: CGGMP21 (ECDSA on secp256k1)")
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fmt.Println(" Use case: Asset transfers, LUX native token")
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fmt.Println()
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xchainParty, err := api.KeyGen(threshold.SchemeECDSA, "validator1", partyIDs, thresholdValue)
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if err != nil {
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log.Fatalf("Failed to start X-Chain keygen: %v", err)
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}
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// Example X-Chain transfer transaction
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xchainTx := &LuxTransaction{
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NetworkID: 9000, // Lux Mainnet
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ChainID: "X",
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TypeID: 0, // Base transaction
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Inputs: []UTXO{{TxID: "abc123", OutputIndex: 0, Amount: 1_000_000_000}},
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Outputs: []Output{{Address: "X-lux1...", Amount: 999_000_000}},
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Memo: []byte("MPC threshold transfer"),
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}
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xchainHash := xchainTx.Hash()
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fmt.Printf(" ✓ Key generation initiated\n")
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fmt.Printf(" ✓ Transaction details:\n")
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fmt.Printf(" - Network ID: %d (Lux Mainnet)\n", xchainTx.NetworkID)
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fmt.Printf(" - Chain: %s-Chain\n", xchainTx.ChainID)
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fmt.Printf(" - Inputs: %d UTXO(s)\n", len(xchainTx.Inputs))
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fmt.Printf(" - Outputs: %d\n", len(xchainTx.Outputs))
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fmt.Printf(" ✓ TX Hash: %s\n", hex.EncodeToString(xchainHash[:16])+"...")
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fmt.Printf(" ✓ Threshold: %d-of-%d signers required\n", thresholdValue+1, len(partyIDs))
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fmt.Printf(" ✓ Party status: Done=%v\n", xchainParty.Done())
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fmt.Println()
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// Example 2: P-Chain (Platform Chain) - ECDSA/secp256k1
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fmt.Println("2. P-Chain (Platform Chain) Transaction Signing")
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fmt.Println(" Protocol: CGGMP21 (ECDSA on secp256k1)")
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fmt.Println(" Use case: Staking, subnet creation, validator management")
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fmt.Println()
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pchainParty, err := api.KeyGen(threshold.SchemeECDSA, "validator2", partyIDs, thresholdValue)
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if err != nil {
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log.Fatalf("Failed to start P-Chain keygen: %v", err)
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}
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// Example P-Chain staking transaction
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stakingTx := &StakingTransaction{
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NetworkID: 9000,
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NodeID: "NodeID-7Xhw2mDxuDS44j42TCB6U5579esbSt3Lg",
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StakeAmount: 2000_000_000_000, // 2000 LUX
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StartTime: 1704067200, // Unix timestamp
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EndTime: 1735689600, // Unix timestamp
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RewardAddress: "P-lux1...",
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}
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stakingHash := stakingTx.Hash()
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fmt.Printf(" ✓ Key generation initiated\n")
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fmt.Printf(" ✓ Staking details:\n")
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fmt.Printf(" - Node ID: %s...\n", stakingTx.NodeID[:20])
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fmt.Printf(" - Stake Amount: %d LUX\n", stakingTx.StakeAmount/1_000_000_000)
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fmt.Printf(" - Duration: ~1 year\n")
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fmt.Printf(" ✓ TX Hash: %s\n", hex.EncodeToString(stakingHash[:16])+"...")
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fmt.Printf(" ✓ Party status: Done=%v\n", pchainParty.Done())
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fmt.Println()
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// Example 3: C-Chain (Contract Chain) - EVM Compatible
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fmt.Println("3. C-Chain (Contract Chain) Transaction Signing")
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fmt.Println(" Protocol: CGGMP21 (ECDSA on secp256k1)")
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fmt.Println(" Use case: Smart contracts, DeFi, ERC-20 tokens")
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fmt.Println()
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cchainParty, err := api.KeyGen(threshold.SchemeECDSA, "validator3", partyIDs, thresholdValue)
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if err != nil {
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log.Fatalf("Failed to start C-Chain keygen: %v", err)
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}
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// Example C-Chain EVM transaction
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cchainTx := &EVMTransaction{
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Nonce: uint64(42),
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GasPrice: big.NewInt(25_000_000_000), // 25 nLUX
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GasLimit: uint64(21000),
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To: "0x742d35Cc6634C0532925a3b844Bc9e7595f1D123",
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Value: big.NewInt(1_000_000_000_000_000_000), // 1 LUX
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Data: []byte{},
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ChainID: big.NewInt(9000), // Lux C-Chain
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}
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cchainHash := cchainTx.Hash()
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fmt.Printf(" ✓ Key generation initiated\n")
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fmt.Printf(" ✓ EVM Transaction details:\n")
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fmt.Printf(" - Nonce: %d\n", cchainTx.Nonce)
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fmt.Printf(" - Gas Price: %s nLUX\n", new(big.Int).Div(cchainTx.GasPrice, big.NewInt(1_000_000_000)))
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fmt.Printf(" - Gas Limit: %d\n", cchainTx.GasLimit)
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fmt.Printf(" - Chain ID: %d (Lux C-Chain)\n", cchainTx.ChainID)
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fmt.Printf(" ✓ TX Hash: 0x%s\n", hex.EncodeToString(cchainHash[:16])+"...")
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fmt.Printf(" ✓ Party status: Done=%v\n", cchainParty.Done())
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fmt.Println()
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// Example 4: Cross-Chain Transfer
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fmt.Println("4. Cross-Chain Transfer (X-Chain → C-Chain)")
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fmt.Println()
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crossChainTx := &CrossChainTransaction{
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SourceChain: "X",
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DestChain: "C",
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Amount: 100_000_000_000, // 100 LUX
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ExportTxID: "export123",
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}
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||||
|
||||
crossChainHash := crossChainTx.Hash()
|
||||
fmt.Printf(" ✓ Cross-chain transfer encoded\n")
|
||||
fmt.Printf(" ✓ Source: %s-Chain → Dest: %s-Chain\n", crossChainTx.SourceChain, crossChainTx.DestChain)
|
||||
fmt.Printf(" ✓ Amount: %d LUX\n", crossChainTx.Amount/1_000_000_000)
|
||||
fmt.Printf(" ✓ TX Hash: %s\n", hex.EncodeToString(crossChainHash[:16])+"...")
|
||||
fmt.Println()
|
||||
|
||||
// Lux Network features
|
||||
fmt.Println("=== Lux Network Chain Support ===")
|
||||
chains := []struct {
|
||||
name string
|
||||
chainID string
|
||||
purpose string
|
||||
}{
|
||||
{"X-Chain", "X", "Asset transfers, native tokens"},
|
||||
{"P-Chain", "P", "Staking, validators, subnets"},
|
||||
{"C-Chain", "C", "Smart contracts, EVM/DeFi"},
|
||||
}
|
||||
for _, chain := range chains {
|
||||
fmt.Printf(" ✓ %s (%s): %s\n", chain.name, chain.chainID, chain.purpose)
|
||||
}
|
||||
fmt.Println()
|
||||
|
||||
fmt.Println("=== Lux MPC Benefits ===")
|
||||
fmt.Println(" • Multi-chain threshold custody (X, P, C chains)")
|
||||
fmt.Println(" • Institutional-grade staking security")
|
||||
fmt.Println(" • Cross-chain atomic swaps with MPC")
|
||||
fmt.Println(" • Subnet deployment with distributed keys")
|
||||
fmt.Println(" • EVM compatibility for DeFi protocols")
|
||||
fmt.Println(" • Post-quantum ready (future upgrades)")
|
||||
fmt.Println()
|
||||
fmt.Println("✅ Lux Network threshold signing ready!")
|
||||
}
|
||||
|
||||
// LuxTransaction represents a simplified Lux X-Chain transaction
|
||||
type LuxTransaction struct {
|
||||
NetworkID uint32
|
||||
ChainID string
|
||||
TypeID uint32
|
||||
Inputs []UTXO
|
||||
Outputs []Output
|
||||
Memo []byte
|
||||
}
|
||||
|
||||
// UTXO represents an unspent transaction output
|
||||
type UTXO struct {
|
||||
TxID string
|
||||
OutputIndex uint32
|
||||
Amount uint64
|
||||
}
|
||||
|
||||
// Output represents a transaction output
|
||||
type Output struct {
|
||||
Address string
|
||||
Amount uint64
|
||||
}
|
||||
|
||||
// Hash computes the transaction hash for signing
|
||||
func (tx *LuxTransaction) Hash() [32]byte {
|
||||
h := sha256.New()
|
||||
// Simplified: in production use proper Lux serialization
|
||||
h.Write([]byte(fmt.Sprintf("%d", tx.NetworkID)))
|
||||
h.Write([]byte(tx.ChainID))
|
||||
for _, input := range tx.Inputs {
|
||||
h.Write([]byte(input.TxID))
|
||||
}
|
||||
for _, output := range tx.Outputs {
|
||||
h.Write([]byte(output.Address))
|
||||
}
|
||||
h.Write(tx.Memo)
|
||||
var result [32]byte
|
||||
copy(result[:], h.Sum(nil))
|
||||
return result
|
||||
}
|
||||
|
||||
// StakingTransaction represents a P-Chain staking transaction
|
||||
type StakingTransaction struct {
|
||||
NetworkID uint32
|
||||
NodeID string
|
||||
StakeAmount uint64
|
||||
StartTime int64
|
||||
EndTime int64
|
||||
RewardAddress string
|
||||
}
|
||||
|
||||
// Hash computes the staking transaction hash
|
||||
func (tx *StakingTransaction) Hash() [32]byte {
|
||||
h := sha256.New()
|
||||
h.Write([]byte(fmt.Sprintf("%d", tx.NetworkID)))
|
||||
h.Write([]byte(tx.NodeID))
|
||||
h.Write([]byte(fmt.Sprintf("%d", tx.StakeAmount)))
|
||||
h.Write([]byte(fmt.Sprintf("%d", tx.StartTime)))
|
||||
h.Write([]byte(fmt.Sprintf("%d", tx.EndTime)))
|
||||
h.Write([]byte(tx.RewardAddress))
|
||||
var result [32]byte
|
||||
copy(result[:], h.Sum(nil))
|
||||
return result
|
||||
}
|
||||
|
||||
// EVMTransaction represents a C-Chain EVM transaction
|
||||
type EVMTransaction struct {
|
||||
Nonce uint64
|
||||
GasPrice *big.Int
|
||||
GasLimit uint64
|
||||
To string
|
||||
Value *big.Int
|
||||
Data []byte
|
||||
ChainID *big.Int
|
||||
}
|
||||
|
||||
// Hash computes the Keccak256 hash for EVM signing
|
||||
func (tx *EVMTransaction) Hash() [32]byte {
|
||||
h := sha3.NewLegacyKeccak256()
|
||||
h.Write(big.NewInt(int64(tx.Nonce)).Bytes())
|
||||
h.Write(tx.GasPrice.Bytes())
|
||||
h.Write(big.NewInt(int64(tx.GasLimit)).Bytes())
|
||||
h.Write([]byte(tx.To))
|
||||
h.Write(tx.Value.Bytes())
|
||||
h.Write(tx.Data)
|
||||
h.Write(tx.ChainID.Bytes())
|
||||
var result [32]byte
|
||||
copy(result[:], h.Sum(nil))
|
||||
return result
|
||||
}
|
||||
|
||||
// CrossChainTransaction represents a cross-chain transfer
|
||||
type CrossChainTransaction struct {
|
||||
SourceChain string
|
||||
DestChain string
|
||||
Amount uint64
|
||||
ExportTxID string
|
||||
}
|
||||
|
||||
// Hash computes the cross-chain transaction hash
|
||||
func (tx *CrossChainTransaction) Hash() [32]byte {
|
||||
h := sha256.New()
|
||||
h.Write([]byte(tx.SourceChain))
|
||||
h.Write([]byte(tx.DestChain))
|
||||
h.Write([]byte(fmt.Sprintf("%d", tx.Amount)))
|
||||
h.Write([]byte(tx.ExportTxID))
|
||||
var result [32]byte
|
||||
copy(result[:], h.Sum(nil))
|
||||
return result
|
||||
}
|
||||
@@ -0,0 +1,194 @@
|
||||
// Copyright (c) 2024-2025 Hanzo AI Inc.
|
||||
// SPDX-License-Identifier: BSD-3-Clause
|
||||
|
||||
// Solana Threshold Signing Example
|
||||
// Demonstrates threshold EdDSA signing for Solana
|
||||
package main
|
||||
|
||||
import (
|
||||
"crypto/sha256"
|
||||
"encoding/hex"
|
||||
"fmt"
|
||||
"log"
|
||||
|
||||
"github.com/luxfi/mpc/pkg/threshold"
|
||||
)
|
||||
|
||||
func main() {
|
||||
fmt.Println("=== Solana Threshold Signing Example ===")
|
||||
fmt.Println()
|
||||
|
||||
// Create unified threshold API
|
||||
api := threshold.NewUnifiedThresholdAPI()
|
||||
defer api.Close()
|
||||
|
||||
// Define MPC nodes with 2-of-3 threshold
|
||||
partyIDs := []string{"validator1", "validator2", "validator3"}
|
||||
thresholdValue := 1 // 2-of-3 threshold
|
||||
|
||||
fmt.Println("1. Solana Transaction Signing")
|
||||
fmt.Println(" Protocol: FROST (EdDSA on Ed25519)")
|
||||
fmt.Println(" Note: Uses Taproot FROST variant for Schnorr compatibility")
|
||||
fmt.Println()
|
||||
|
||||
// Initialize EdDSA key generation
|
||||
party, err := api.KeyGen(threshold.SchemeEdDSA, "validator1", partyIDs, thresholdValue)
|
||||
if err != nil {
|
||||
log.Fatalf("Failed to start keygen: %v", err)
|
||||
}
|
||||
|
||||
// Example Solana transfer transaction
|
||||
tx := &SolanaTransaction{
|
||||
RecentBlockhash: "EkSnNWid2cvwEVnVx9aBqawnmiCNiDgp3gUdkDPTKN1N",
|
||||
FeePayer: "9xQeWvG816bUx9EPjHmaT23yvVM2ZWbrrpZb9PusVFin",
|
||||
Instructions: []Instruction{
|
||||
{
|
||||
ProgramID: "11111111111111111111111111111111", // System Program
|
||||
Accounts: []AccountMeta{
|
||||
{Pubkey: "9xQeWvG816bUx9EPjHmaT23yvVM2ZWbrrpZb9PusVFin", IsSigner: true, IsWritable: true},
|
||||
{Pubkey: "2wmVCSfPxGPjrnMMn7rchp4uaeoTqN39mXFC2zhPdri9", IsSigner: false, IsWritable: true},
|
||||
},
|
||||
Data: encodeTransferInstruction(1_000_000_000), // 1 SOL in lamports
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
// Compute transaction hash
|
||||
txHash := tx.Hash()
|
||||
|
||||
fmt.Printf(" ✓ Key generation initiated\n")
|
||||
fmt.Printf(" ✓ Transaction details:\n")
|
||||
fmt.Printf(" - Fee Payer: %s...\n", tx.FeePayer[:16])
|
||||
fmt.Printf(" - Recent Blockhash: %s...\n", tx.RecentBlockhash[:16])
|
||||
fmt.Printf(" - Instructions: %d\n", len(tx.Instructions))
|
||||
fmt.Printf(" - Amount: 1 SOL (1,000,000,000 lamports)\n")
|
||||
fmt.Printf(" ✓ TX Hash: %s\n", hex.EncodeToString(txHash[:16])+"...")
|
||||
fmt.Printf(" ✓ Threshold: %d-of-%d signers required\n", thresholdValue+1, len(partyIDs))
|
||||
fmt.Printf(" ✓ Party status: Done=%v\n", party.Done())
|
||||
fmt.Println()
|
||||
|
||||
// Example 2: SPL Token Transfer
|
||||
fmt.Println("2. SPL Token Transfer")
|
||||
fmt.Println()
|
||||
|
||||
splTx := &SolanaTransaction{
|
||||
RecentBlockhash: "EkSnNWid2cvwEVnVx9aBqawnmiCNiDgp3gUdkDPTKN1N",
|
||||
FeePayer: "9xQeWvG816bUx9EPjHmaT23yvVM2ZWbrrpZb9PusVFin",
|
||||
Instructions: []Instruction{
|
||||
{
|
||||
ProgramID: "TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA", // SPL Token Program
|
||||
Accounts: []AccountMeta{
|
||||
{Pubkey: "sourceTokenAccount", IsSigner: false, IsWritable: true},
|
||||
{Pubkey: "destTokenAccount", IsSigner: false, IsWritable: true},
|
||||
{Pubkey: "ownerPubkey", IsSigner: true, IsWritable: false},
|
||||
},
|
||||
Data: encodeSPLTransfer(1_000_000), // 1 USDC (6 decimals)
|
||||
},
|
||||
},
|
||||
}
|
||||
|
||||
splHash := splTx.Hash()
|
||||
fmt.Printf(" ✓ SPL Token transfer encoded\n")
|
||||
fmt.Printf(" ✓ Token Program: TokenkegQfeZyiNwAJbNbGKPFXC...\n")
|
||||
fmt.Printf(" ✓ TX Hash: %s\n", hex.EncodeToString(splHash[:16])+"...")
|
||||
fmt.Println()
|
||||
|
||||
// Solana ecosystem
|
||||
fmt.Println("=== Solana Ecosystem Support ===")
|
||||
programs := []struct {
|
||||
name string
|
||||
programID string
|
||||
}{
|
||||
{"System Program", "11111111111111111111111111111111"},
|
||||
{"SPL Token", "TokenkegQfeZyiNwAJbNbGKPFXCWuBvf9Ss623VQ5DA"},
|
||||
{"Token 2022", "TokenzQdBNbLqP5VEhdkAS6EPFLC1PHnBqCXEpPxuEb"},
|
||||
{"Associated Token", "ATokenGPvbdGVxr1b2hvZbsiqW5xWH25efTNsLJA8knL"},
|
||||
{"Memo Program", "MemoSq4gqABAXKb96qnH8TysNcWxMyWCqXgDLGmfcHr"},
|
||||
}
|
||||
for _, prog := range programs {
|
||||
fmt.Printf(" ✓ %s\n", prog.name)
|
||||
}
|
||||
fmt.Println()
|
||||
|
||||
fmt.Println("=== Solana MPC Benefits ===")
|
||||
fmt.Println(" • Native Ed25519 threshold signatures")
|
||||
fmt.Println(" • Sub-second transaction finality")
|
||||
fmt.Println(" • Support for all SPL tokens")
|
||||
fmt.Println(" • DeFi protocol compatibility (Raydium, Jupiter, etc.)")
|
||||
fmt.Println(" • NFT marketplace support (Magic Eden, Tensor)")
|
||||
fmt.Println()
|
||||
fmt.Println("✅ Solana threshold signing ready!")
|
||||
}
|
||||
|
||||
// SolanaTransaction represents a simplified Solana transaction
|
||||
type SolanaTransaction struct {
|
||||
RecentBlockhash string
|
||||
FeePayer string
|
||||
Instructions []Instruction
|
||||
}
|
||||
|
||||
// Instruction represents a Solana instruction
|
||||
type Instruction struct {
|
||||
ProgramID string
|
||||
Accounts []AccountMeta
|
||||
Data []byte
|
||||
}
|
||||
|
||||
// AccountMeta represents account metadata
|
||||
type AccountMeta struct {
|
||||
Pubkey string
|
||||
IsSigner bool
|
||||
IsWritable bool
|
||||
}
|
||||
|
||||
// Hash computes the transaction hash for signing
|
||||
func (tx *SolanaTransaction) Hash() [32]byte {
|
||||
h := sha256.New()
|
||||
// Simplified: in production use proper Solana serialization
|
||||
h.Write([]byte(tx.RecentBlockhash))
|
||||
h.Write([]byte(tx.FeePayer))
|
||||
for _, ix := range tx.Instructions {
|
||||
h.Write([]byte(ix.ProgramID))
|
||||
h.Write(ix.Data)
|
||||
}
|
||||
var result [32]byte
|
||||
copy(result[:], h.Sum(nil))
|
||||
return result
|
||||
}
|
||||
|
||||
// encodeTransferInstruction encodes a System Program transfer
|
||||
func encodeTransferInstruction(lamports uint64) []byte {
|
||||
// Instruction: Transfer (index 2)
|
||||
data := make([]byte, 12)
|
||||
data[0] = 2 // Transfer instruction
|
||||
// Little-endian lamports
|
||||
for i := 0; i < 8; i++ {
|
||||
data[4+i] = byte(lamports >> (i * 8))
|
||||
}
|
||||
return data
|
||||
}
|
||||
|
||||
// encodeSPLTransfer encodes an SPL Token transfer
|
||||
func encodeSPLTransfer(amount uint64) []byte {
|
||||
// Instruction: Transfer (index 3)
|
||||
data := make([]byte, 9)
|
||||
data[0] = 3 // Transfer instruction
|
||||
// Little-endian amount
|
||||
for i := 0; i < 8; i++ {
|
||||
data[1+i] = byte(amount >> (i * 8))
|
||||
}
|
||||
return data
|
||||
}
|
||||
|
||||
// base58Alphabet is the Bitcoin/Solana base58 alphabet
|
||||
const base58Alphabet = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
|
||||
|
||||
// base58Encode encodes data to base58 (simplified implementation)
|
||||
func base58Encode(data []byte) string {
|
||||
if len(data) == 0 {
|
||||
return ""
|
||||
}
|
||||
// Simplified: just return hex for demonstration
|
||||
// Production code would use a proper base58 implementation
|
||||
return hex.EncodeToString(data)
|
||||
}
|
||||
@@ -0,0 +1,239 @@
|
||||
// Copyright (c) 2024-2025 Hanzo AI Inc.
|
||||
// SPDX-License-Identifier: BSD-3-Clause
|
||||
|
||||
// TFHE (Threshold Fully Homomorphic Encryption) Example
|
||||
// Demonstrates FHE computations on encrypted data with threshold decryption
|
||||
package main
|
||||
|
||||
import (
|
||||
"crypto/rand"
|
||||
"encoding/hex"
|
||||
"fmt"
|
||||
"log"
|
||||
"math/big"
|
||||
)
|
||||
|
||||
func main() {
|
||||
fmt.Println("=== TFHE (Threshold Fully Homomorphic Encryption) Example ===")
|
||||
fmt.Println()
|
||||
|
||||
// Note: This example demonstrates the concepts and API usage.
|
||||
// Full TFHE requires the luxfi/fhe package to be properly configured.
|
||||
|
||||
// Define MPC nodes with 2-of-3 threshold
|
||||
partyIDs := []string{"node1", "node2", "node3"}
|
||||
thresholdValue := 1 // 2-of-3 threshold (t+1 signers required)
|
||||
|
||||
fmt.Println("1. TFHE Key Generation (Threshold)")
|
||||
fmt.Println(" Protocol: Threshold FHE Key Generation")
|
||||
fmt.Println(" Use case: Distributed encryption/decryption with computation")
|
||||
fmt.Println()
|
||||
|
||||
// Simulate TFHE key generation
|
||||
tfheKeyGen := &TFHEKeyGenSession{
|
||||
PartyIDs: partyIDs,
|
||||
Threshold: thresholdValue,
|
||||
SessionID: generateSessionID(),
|
||||
}
|
||||
|
||||
fmt.Printf(" ✓ Session ID: %s\n", tfheKeyGen.SessionID[:16]+"...")
|
||||
fmt.Printf(" ✓ Parties: %v\n", tfheKeyGen.PartyIDs)
|
||||
fmt.Printf(" ✓ Threshold: %d-of-%d\n", thresholdValue+1, len(partyIDs))
|
||||
fmt.Println()
|
||||
|
||||
// Example 2: Encrypted Computation
|
||||
fmt.Println("2. Homomorphic Computation Example")
|
||||
fmt.Println(" Operation: Encrypted addition and multiplication")
|
||||
fmt.Println()
|
||||
|
||||
// Simulate encrypted values
|
||||
plaintext1 := big.NewInt(42)
|
||||
plaintext2 := big.NewInt(17)
|
||||
|
||||
// In real TFHE, these would be ciphertexts
|
||||
encrypted1 := simulateEncrypt(plaintext1)
|
||||
encrypted2 := simulateEncrypt(plaintext2)
|
||||
|
||||
fmt.Printf(" ✓ Value 1 (plaintext): %d\n", plaintext1)
|
||||
fmt.Printf(" ✓ Value 2 (plaintext): %d\n", plaintext2)
|
||||
fmt.Printf(" ✓ Encrypted 1: %s...\n", hex.EncodeToString(encrypted1[:16]))
|
||||
fmt.Printf(" ✓ Encrypted 2: %s...\n", hex.EncodeToString(encrypted2[:16]))
|
||||
fmt.Println()
|
||||
|
||||
// Homomorphic operations (simulated)
|
||||
encryptedSum := simulateHomomorphicAdd(encrypted1, encrypted2)
|
||||
encryptedProduct := simulateHomomorphicMul(encrypted1, encrypted2)
|
||||
|
||||
fmt.Printf(" ✓ Encrypted Sum: %s...\n", hex.EncodeToString(encryptedSum[:16]))
|
||||
fmt.Printf(" ✓ Encrypted Product: %s...\n", hex.EncodeToString(encryptedProduct[:16]))
|
||||
fmt.Println()
|
||||
|
||||
// Example 3: Threshold Decryption
|
||||
fmt.Println("3. Threshold Decryption")
|
||||
fmt.Printf(" Requires %d-of-%d parties to decrypt\n", thresholdValue+1, len(partyIDs))
|
||||
fmt.Println()
|
||||
|
||||
// Simulate partial decryption shares
|
||||
share1 := generateDecryptionShare("node1")
|
||||
share2 := generateDecryptionShare("node2")
|
||||
|
||||
fmt.Printf(" ✓ Decryption share from node1: %s...\n", hex.EncodeToString(share1[:16]))
|
||||
fmt.Printf(" ✓ Decryption share from node2: %s...\n", hex.EncodeToString(share2[:16]))
|
||||
fmt.Printf(" ✓ Threshold met (2 of 3 shares)\n")
|
||||
fmt.Printf(" ✓ Decrypted sum would be: %d\n", plaintext1.Int64()+plaintext2.Int64())
|
||||
fmt.Printf(" ✓ Decrypted product would be: %d\n", plaintext1.Int64()*plaintext2.Int64())
|
||||
fmt.Println()
|
||||
|
||||
// Example 4: Private Smart Contract Execution
|
||||
fmt.Println("4. Private Smart Contract Execution")
|
||||
fmt.Println(" Use case: Confidential DeFi transactions")
|
||||
fmt.Println()
|
||||
|
||||
contract := &PrivateContract{
|
||||
Name: "ConfidentialSwap",
|
||||
InputTypes: []string{"encrypted_amount", "encrypted_price"},
|
||||
OutputTypes: []string{"encrypted_result"},
|
||||
}
|
||||
|
||||
fmt.Printf(" ✓ Contract: %s\n", contract.Name)
|
||||
fmt.Printf(" ✓ Inputs: %v\n", contract.InputTypes)
|
||||
fmt.Printf(" ✓ Outputs: %v\n", contract.OutputTypes)
|
||||
fmt.Printf(" ✓ Computation runs on encrypted data\n")
|
||||
fmt.Printf(" ✓ Only threshold parties can decrypt result\n")
|
||||
fmt.Println()
|
||||
|
||||
// Example 5: Encrypted Database Query
|
||||
fmt.Println("5. Encrypted Database Query")
|
||||
fmt.Println(" Use case: Private data analytics")
|
||||
fmt.Println()
|
||||
|
||||
query := &EncryptedQuery{
|
||||
Operation: "SUM",
|
||||
Column: "encrypted_balance",
|
||||
Filter: "encrypted_age > threshold",
|
||||
}
|
||||
|
||||
fmt.Printf(" ✓ Query: %s(%s) WHERE %s\n", query.Operation, query.Column, query.Filter)
|
||||
fmt.Printf(" ✓ Database never sees plaintext values\n")
|
||||
fmt.Printf(" ✓ Result is encrypted, needs threshold decryption\n")
|
||||
fmt.Println()
|
||||
|
||||
// TFHE capabilities
|
||||
fmt.Println("=== TFHE Capabilities ===")
|
||||
capabilities := []struct {
|
||||
name string
|
||||
desc string
|
||||
}{
|
||||
{"Threshold Key Generation", "Distributed key generation with no single party holding full key"},
|
||||
{"Homomorphic Addition", "Add encrypted values without decryption"},
|
||||
{"Homomorphic Multiplication", "Multiply encrypted values without decryption"},
|
||||
{"Threshold Decryption", "t-of-n parties required to decrypt results"},
|
||||
{"Bootstrapping", "Refresh ciphertexts to enable unlimited operations"},
|
||||
{"SIMD Operations", "Parallel operations on encrypted vectors"},
|
||||
}
|
||||
for _, cap := range capabilities {
|
||||
fmt.Printf(" ✓ %s\n %s\n", cap.name, cap.desc)
|
||||
}
|
||||
fmt.Println()
|
||||
|
||||
// Use cases
|
||||
fmt.Println("=== TFHE Use Cases ===")
|
||||
useCases := []struct {
|
||||
name string
|
||||
desc string
|
||||
}{
|
||||
{"Private DeFi", "Confidential swaps, lending, and trading"},
|
||||
{"Healthcare", "Compute on encrypted patient data"},
|
||||
{"Finance", "Risk analysis on encrypted portfolios"},
|
||||
{"Voting", "Verifiable elections with voter privacy"},
|
||||
{"ML/AI", "Private inference on encrypted models"},
|
||||
{"Supply Chain", "Track goods without revealing business data"},
|
||||
}
|
||||
for _, uc := range useCases {
|
||||
fmt.Printf(" ✓ %s: %s\n", uc.name, uc.desc)
|
||||
}
|
||||
fmt.Println()
|
||||
|
||||
fmt.Println("=== TFHE + MPC Benefits ===")
|
||||
fmt.Println(" • Computation on encrypted data (FHE)")
|
||||
fmt.Println(" • No single point of decryption (threshold)")
|
||||
fmt.Println(" • Key shares distributed across parties")
|
||||
fmt.Println(" • Verifiable computation results")
|
||||
fmt.Println(" • Post-quantum security (lattice-based)")
|
||||
fmt.Println(" • Integration with blockchain for trustless execution")
|
||||
fmt.Println()
|
||||
fmt.Println("✅ TFHE threshold computation ready!")
|
||||
}
|
||||
|
||||
// TFHEKeyGenSession represents a threshold FHE key generation session
|
||||
type TFHEKeyGenSession struct {
|
||||
PartyIDs []string
|
||||
Threshold int
|
||||
SessionID string
|
||||
}
|
||||
|
||||
// PrivateContract represents a confidential smart contract
|
||||
type PrivateContract struct {
|
||||
Name string
|
||||
InputTypes []string
|
||||
OutputTypes []string
|
||||
}
|
||||
|
||||
// EncryptedQuery represents a query on encrypted data
|
||||
type EncryptedQuery struct {
|
||||
Operation string
|
||||
Column string
|
||||
Filter string
|
||||
}
|
||||
|
||||
// generateSessionID creates a random session identifier
|
||||
func generateSessionID() string {
|
||||
b := make([]byte, 32)
|
||||
_, err := rand.Read(b)
|
||||
if err != nil {
|
||||
log.Fatalf("Failed to generate session ID: %v", err)
|
||||
}
|
||||
return hex.EncodeToString(b)
|
||||
}
|
||||
|
||||
// simulateEncrypt simulates FHE encryption (placeholder)
|
||||
func simulateEncrypt(plaintext *big.Int) []byte {
|
||||
// In real TFHE, this would produce a ciphertext
|
||||
// Here we just create a deterministic "encrypted" representation
|
||||
result := make([]byte, 64)
|
||||
copy(result[:], plaintext.Bytes())
|
||||
// Add some "noise" to simulate encryption
|
||||
noise := make([]byte, 32)
|
||||
rand.Read(noise)
|
||||
copy(result[32:], noise)
|
||||
return result
|
||||
}
|
||||
|
||||
// simulateHomomorphicAdd simulates homomorphic addition
|
||||
func simulateHomomorphicAdd(a, b []byte) []byte {
|
||||
result := make([]byte, 64)
|
||||
// In real TFHE, this would be actual homomorphic addition
|
||||
for i := 0; i < len(a) && i < len(result); i++ {
|
||||
result[i] = a[i] ^ b[i] // XOR as placeholder
|
||||
}
|
||||
return result
|
||||
}
|
||||
|
||||
// simulateHomomorphicMul simulates homomorphic multiplication
|
||||
func simulateHomomorphicMul(a, b []byte) []byte {
|
||||
result := make([]byte, 64)
|
||||
// In real TFHE, this would be actual homomorphic multiplication
|
||||
for i := 0; i < len(a) && i < len(result); i++ {
|
||||
result[i] = a[i] & b[i] // AND as placeholder
|
||||
}
|
||||
return result
|
||||
}
|
||||
|
||||
// generateDecryptionShare generates a simulated decryption share
|
||||
func generateDecryptionShare(nodeID string) []byte {
|
||||
share := make([]byte, 32)
|
||||
rand.Read(share)
|
||||
// Include node ID in the share for demonstration
|
||||
copy(share[:len(nodeID)], []byte(nodeID))
|
||||
return share
|
||||
}
|
||||
Reference in New Issue
Block a user