mirror of
https://github.com/Mrs4s/MiraiGo.git
synced 2025-05-04 19:17:38 +08:00
69 lines
1.5 KiB
Go
69 lines
1.5 KiB
Go
package crypto
|
|
|
|
import (
|
|
"crypto/ecdh"
|
|
"crypto/md5"
|
|
"crypto/rand"
|
|
"encoding/hex"
|
|
"encoding/json"
|
|
"net/http"
|
|
"strconv"
|
|
)
|
|
|
|
type ECDH struct {
|
|
SvrPublicKeyVer uint16
|
|
PublicKey []byte
|
|
ShareKey []byte
|
|
}
|
|
|
|
type EncryptSession struct {
|
|
T133 []byte
|
|
}
|
|
|
|
const serverPublicKey = "04EBCA94D733E399B2DB96EACDD3F69A8BB0F74224E2B44E3357812211D2E62EFBC91BB553098E25E33A799ADC7F76FEB208DA7C6522CDB0719A305180CC54A82E"
|
|
|
|
func NewECDH() *ECDH {
|
|
e := &ECDH{
|
|
SvrPublicKeyVer: 1,
|
|
}
|
|
key, _ := hex.DecodeString(serverPublicKey)
|
|
e.init(key)
|
|
return e
|
|
}
|
|
|
|
type pubKeyResp struct {
|
|
Meta struct {
|
|
PubKeyVer uint16 `json:"KeyVer"`
|
|
PubKey string `json:"PubKey"`
|
|
} `json:"PubKeyMeta"`
|
|
}
|
|
|
|
// FetchPubKey 从服务器获取PubKey
|
|
func (e *ECDH) FetchPubKey(uin int64) {
|
|
resp, err := http.Get("https://keyrotate.qq.com/rotate_key?cipher_suite_ver=305&uin=" + strconv.FormatInt(uin, 10))
|
|
if err != nil {
|
|
return
|
|
}
|
|
defer func() { _ = resp.Body.Close() }()
|
|
pubKey := pubKeyResp{}
|
|
err = json.NewDecoder(resp.Body).Decode(&pubKey)
|
|
if err != nil {
|
|
return
|
|
}
|
|
e.SvrPublicKeyVer = pubKey.Meta.PubKeyVer
|
|
key, _ := hex.DecodeString(pubKey.Meta.PubKey)
|
|
e.init(key) // todo check key sign
|
|
}
|
|
|
|
func (e *ECDH) init(svrPubKey []byte) {
|
|
p256 := ecdh.P256()
|
|
local, _ := p256.GenerateKey(rand.Reader)
|
|
remote, _ := p256.NewPublicKey(svrPubKey)
|
|
share, _ := local.ECDH(remote)
|
|
|
|
hash := md5.New()
|
|
hash.Write(share[:16])
|
|
e.ShareKey = hash.Sum(nil)
|
|
e.PublicKey = local.PublicKey().Bytes()
|
|
}
|