/
wallets.go
87 lines (77 loc) · 1.96 KB
/
wallets.go
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package main
import (
"bytes"
"crypto/elliptic"
"encoding/gob"
"github.com/btcsuite/btcutil/base58"
"io/ioutil"
"log"
)
// 定义一个wallets结构,保存所有wallet以及它们的地址
type Wallets struct {
//map[地址][]钱包
WalletsMap map[string]*Wallet
}
// 创建方法
func NewWallets() *Wallets {
var ws Wallets
ws.WalletsMap = make(map[string]*Wallet)
ws.loadFile()
return &ws
}
func (ws *Wallets) CreatWallet() string {
wallet := NewWallet()
address := wallet.NewAddress()
ws.WalletsMap[address] = wallet
ws.saveToFile()
return address
}
func (ws *Wallets) saveToFile() {
var buffer bytes.Buffer
// 因为P256生成的curve类型是一个interface,所以需要跟gob先说一声
// 在gob注册
gob.Register(elliptic.P256())
encoder := gob.NewEncoder(&buffer)
err := encoder.Encode(ws)
if err != nil {
log.Panic(err)
}
// func WriteFile(filename string, data []byte, perm os.FileMode) error {
err = ioutil.WriteFile("wallet.dat", buffer.Bytes(), 0600)
if err != nil {
log.Panic(err)
}
}
// 保存方法,把新建的wallet添加进去
func (ws *Wallets) loadFile() {
content, err := ioutil.ReadFile("wallet.dat")
if err != nil {
log.Panic(err)
}
gob.Register(elliptic.P256())
decoder := gob.NewDecoder(bytes.NewReader(content))
var wslocal Wallets
err = decoder.Decode(&wslocal)
if err != nil {
log.Panic(err)
}
ws.WalletsMap = wslocal.WalletsMap
}
// 读取文件方法,把所有的wallet读取出来
func (ws *Wallets) ListAllAddresses() []string {
var addresses []string
for address := range ws.WalletsMap {
addresses = append(addresses, address)
}
return addresses
}
// 通过地址返回公钥的哈希值
func GetPubeyFromAddress(address string) []byte {
// 1. 解码
// 2. 截取出公钥哈希:去除version(1字节)去除校验码(4字节)
addressByte := base58.Decode(address) //25字节
len := len(addressByte)
pubKeyHash := addressByte[1 : len-4]
// 真正的锁定动作
return pubKeyHash
}