diff --git a/CHANGELOG.md b/CHANGELOG.md
index 32be19d4..50a51959 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,13 @@
+## v1.0.32 / 2021-12-25
+
+- 优化aes方法
+- 增加base64方法
+
 ## v1.0.31 / 2021-12-24
 
 - 增加美团联盟服务
 - 优化http、request方法
+
 ## v1.0.30 / 2021-12-21
 
 - 优化time方法、增加设置Unix时间戳方式
diff --git a/library.go b/library.go
index a9cf4bbc..deadb4c8 100644
--- a/library.go
+++ b/library.go
@@ -1,5 +1,5 @@
 package go_library
 
 func Version() string {
-	return "v1.0.31"
+	return "v1.0.32"
 }
diff --git a/library_test.go b/library_test.go
index ab83c1d0..d5da855c 100644
--- a/library_test.go
+++ b/library_test.go
@@ -1,12 +1,9 @@
 package go_library
 
 import (
-	"fmt"
-	"log"
 	"testing"
 )
 
 func TestVersion(t *testing.T) {
-	fmt.Println(Version())
-	log.Println(Version())
+	t.Log(Version())
 }
diff --git a/service/wechatpayapiv3/.gitignore b/service/wechatpayapiv3/.gitignore
deleted file mode 100644
index 7a2230f3..00000000
--- a/service/wechatpayapiv3/.gitignore
+++ /dev/null
@@ -1,3 +0,0 @@
-apiclient_cert.pem
-apiclient_key.pem
-app_test.go
\ No newline at end of file
diff --git a/service/wechatpayapiv3/app.go b/service/wechatpayapiv3/app.go
index 3219fd10..991995f2 100644
--- a/service/wechatpayapiv3/app.go
+++ b/service/wechatpayapiv3/app.go
@@ -49,7 +49,7 @@ func (app *App) request(url string, params map[string]interface{}, method string
 		return nil, result, err
 	}
 	req.Header.Add("Authorization", "WECHATPAY2-SHA256-RSA2048 "+authorization)
-	req.Header.Add("User-Agent", request.GetUserAgent())
+	req.Header.Add("User-Agent", request.GetRandomUserAgent())
 	req.Header.Add("Content-Type", "application/json")
 	req.Header.Add("Accept", "application/json")
 	req.Header.Add("Accept-Language", "zh-CN")
diff --git a/utils/aes/aes.go b/utils/goaes/goaes.go
similarity index 99%
rename from utils/aes/aes.go
rename to utils/goaes/goaes.go
index 492c4e1e..3692ec2e 100644
--- a/utils/aes/aes.go
+++ b/utils/goaes/goaes.go
@@ -1,4 +1,4 @@
-package aes
+package goaes
 
 import (
 	"bytes"
diff --git a/utils/gobase64/gobase64.go b/utils/gobase64/gobase64.go
new file mode 100644
index 00000000..961e93d4
--- /dev/null
+++ b/utils/gobase64/gobase64.go
@@ -0,0 +1,17 @@
+package gobase64
+
+import "encoding/base64"
+
+// Encode base64编码
+func Encode(input string) string {
+	return base64.StdEncoding.EncodeToString([]byte(input))
+}
+
+// Decode base64解码
+func Decode(input string) string {
+	decodeString, err := base64.StdEncoding.DecodeString(input)
+	if err != nil {
+		return ""
+	}
+	return string(decodeString)
+}
diff --git a/utils/gobase64/gobase64_test.go b/utils/gobase64/gobase64_test.go
new file mode 100644
index 00000000..061d94dc
--- /dev/null
+++ b/utils/gobase64/gobase64_test.go
@@ -0,0 +1,13 @@
+package gobase64
+
+import (
+	"testing"
+)
+
+func TestEncode(t *testing.T) {
+	t.Log(Encode("广东茂名"))
+}
+
+func TestDecode(t *testing.T) {
+	t.Log(Decode(Encode("广东茂名")))
+}