all: bump go 1.20

.github/workflows/go.yml

@@ -16,7 +16,7 @@ jobs:
     - name: Set up Go 1.x
       uses: actions/setup-go@v2
       with:
-        go-version: 1.19
+        go-version: 1.20
 
     - name: Check out code into the Go module directory
       uses: actions/checkout@v2

go.mod

@@ -1,6 +1,6 @@
 module github.com/Mrs4s/MiraiGo
 
-go 1.19
+go 1.20
 
 require (
 	github.com/RomiChan/protobuf v0.1.1-0.20230204044148-2ed269a2e54d

internal/crypto/crypto.go

@@ -1,6 +1,9 @@
 package crypto
 
 import (
+	"crypto/ecdh"
+	"crypto/md5"
+	"crypto/rand"
 	"encoding/hex"
 	"encoding/json"
 	"net/http"
@@ -51,3 +54,15 @@ func (e *ECDH) FetchPubKey(uin int64) {
 	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()
+}

internal/crypto/ecdh_119.go

@@ -1,19 +0,0 @@
-//go:build !go1.20
-
-package crypto
-
-import (
-	"crypto/elliptic"
-	"crypto/md5"
-	"crypto/rand"
-)
-
-func (e *ECDH) init(svrPubKey []byte) {
-	p256 := elliptic.P256()
-	key, sx, sy, _ := elliptic.GenerateKey(p256, rand.Reader)
-	tx, ty := elliptic.Unmarshal(p256, svrPubKey)
-	x, _ := p256.ScalarMult(tx, ty, key)
-	hash := md5.Sum(x.Bytes()[:16])
-	e.ShareKey = hash[:]
-	e.PublicKey = elliptic.Marshal(p256, sx, sy)
-}

internal/crypto/ecdh_120.go

@@ -1,21 +0,0 @@
-//go:build go1.20
-
-package crypto
-
-import (
-	"crypto/ecdh"
-	"crypto/md5"
-	"crypto/rand"
-)
-
-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()
-}

utils/string.go

@@ -2,7 +2,6 @@ package utils
 
 import (
 	"math/rand"
-	"reflect"
 	"strconv"
 	"strings"
 	"unicode/utf8"
@@ -50,10 +49,8 @@ func ConvertSubVersionToInt(str string) int32 {
 }
 
 // B2S converts byte slice to a string without memory allocation.
-// See https://groups.google.com/forum/#!msg/Golang-Nuts/ENgbUzYvCuU/90yGx7GUAgAJ .
-// from github.com/savsgio/gotils/strconv
 func B2S(b []byte) string {
-	return *(*string)(unsafe.Pointer(&b))
+	return unsafe.String(&b[0], len(b))
 }
 
 // S2B converts string to a byte slice without memory allocation.
@@ -61,12 +58,7 @@ func B2S(b []byte) string {
 // Note it may break if string and/or slice header will change
 // in the future go versions.
 func S2B(s string) (b []byte) {
-	sh := (*reflect.StringHeader)(unsafe.Pointer(&s))
-	bh := (*reflect.SliceHeader)(unsafe.Pointer(&b))
-	bh.Data = sh.Data
-	bh.Cap = sh.Len
-	bh.Len = sh.Len
-	return
+	return unsafe.Slice(unsafe.StringData(s), len(s))
 }
 
 const (