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pathFromSeed.go
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/
pathFromSeed.go
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package hdwallet
import (
"crypto/ecdsa"
"encoding/hex"
"fmt"
"github.com/btcsuite/btcd/btcutil/hdkeychain"
"github.com/btcsuite/btcd/chaincfg"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/crypto"
)
func PathFromSeed(seedStr string, pathStr string) (string, error) {
var err error
seed, err := hex.DecodeString(seedStr)
if err != nil {
fmt.Println("seed str to bytes error")
return "seed str to bytes", err
}
path, err := accounts.ParseDerivationPath(pathStr)
if err != nil {
fmt.Println("path str to path error")
return "path str to path", err
}
// crate master private key
masterKey, err := hdkeychain.NewMaster(seed, &chaincfg.MainNetParams)
if err != nil {
fmt.Println("Get masterKey error")
return "Get masterKey error", err
}
//fmt.Println("masterKey:", masterKey)
// derivation path
fixIssue172 := true
for _, n := range path {
if fixIssue172 && masterKey.IsAffectedByIssue172() {
masterKey, err = masterKey.Derive(n)
} else {
masterKey, err = masterKey.DeriveNonStandard(n)
}
if err != nil {
return "", err
}
}
//fmt.Println("masterKey:", masterKey)
privateKey, err := masterKey.ECPrivKey()
privateKeyECDSA := privateKey.ToECDSA()
if err != nil {
return "", err
}
// get eth address
publicKey := privateKeyECDSA.Public()
publicKeyECDSA, ok := publicKey.(*ecdsa.PublicKey)
if !ok {
fmt.Println("Unable to get public key")
return "", err
}
address := crypto.PubkeyToAddress(*publicKeyECDSA).Hex()
info := fmt.Sprintf("%v:%v", address, hexutil.Encode(crypto.FromECDSA(privateKeyECDSA)))
return info, nil
}