diff --git a/lib/boc/api_macao.go b/lib/boc/api_macao.go
new file mode 100644
index 0000000..9e24574
--- /dev/null
+++ b/lib/boc/api_macao.go
@@ -0,0 +1 @@
+package boc
diff --git a/test/boc_pay_test.go b/test/boc_pay_test.go
new file mode 100644
index 0000000..89d52d5
--- /dev/null
+++ b/test/boc_pay_test.go
@@ -0,0 +1,13 @@
+package test
+
+import (
+	zhios_pay_utils "code.fnuoos.com/go_rely_warehouse/zyos_go_pay.git/utils"
+	"fmt"
+	"testing"
+)
+
+func TestJoinStringsInASCII(t *testing.T) {
+	ascii := zhios_pay_utils.JoinStringsInASCII(map[string]string{"apam": "value1", "cpam": "value2", "Bpam": "value3"},
+		"", "", false, false)
+	fmt.Println(ascii)
+}
diff --git a/utils/RsaSign.go b/utils/RsaSign.go
new file mode 100644
index 0000000..2a2dffe
--- /dev/null
+++ b/utils/RsaSign.go
@@ -0,0 +1,91 @@
+package zhios_pay_utils
+
+import (
+	"crypto"
+	"crypto/rand"
+	"crypto/rsa"
+	"encoding/base64"
+	"fmt"
+	"golang.org/x/crypto/ssh"
+	"sort"
+	"strings"
+)
+
+func GetSign(method, privateKeyStr string, param map[string]interface{}) (string, error) {
+	privateKey, err := ssh.ParseRawPrivateKey([]byte(privateKeyStr))
+	if err != nil {
+		return "", err
+	}
+	keys := make([]string, 0, len(param))
+	for k := range param {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	data := "/api" + method
+	for _, v := range keys {
+		if strings.Contains(data, "?") == false {
+			data += "?" + v + "=" + param[v].(string)
+		} else {
+			data += "&" + v + "=" + param[v].(string)
+		}
+	}
+	fmt.Println(privateKey.(*rsa.PrivateKey))
+	fmt.Println(data)
+	h := crypto.Hash.New(crypto.SHA256)
+	h.Write([]byte(data))
+	hashed := h.Sum(nil)
+	sign, err := rsa.SignPKCS1v15(rand.Reader, privateKey.(*rsa.PrivateKey), crypto.SHA256, hashed)
+	if err != nil {
+		return "", nil
+	}
+	return base64.StdEncoding.EncodeToString(sign), nil
+}
+
+//规则：
+//◆ 参数名ASCII码从小到大排序（字典序）；
+//◆ 如果参数的值为空不参与签名；
+//◆ 参数名区分大小写；
+//◆ 接口請求成功時，需對返回參數使用平台提供的公鑰進行驗簽，传送的sign参数不参与签名，将生成的签名与该sign值作校验。
+//
+//  JoinStringsInASCII
+//  @Description: 按照规则，参数名ASCII码从小到大排序后拼接
+//  @param data 待拼接的数据
+//  @param sep 连接符
+//  @param onlyValues 是否只包含参数值，true则不包含参数名，否则参数名和参数值均有
+//  @param includeEmpty 是否包含空值，true则包含空值，否则不包含，注意此参数不影响参数名的存在
+//  @param exceptKeys 被排除的参数名，不参与排序及拼接
+//  @return string
+//
+func JoinStringsInASCII(data map[string]string, sep, KeyValueSep string, onlyValues, includeEmpty bool, exceptKeys ...string) string {
+	var list []string
+	var keyList []string
+	m := make(map[string]int)
+	if len(exceptKeys) > 0 {
+		for _, except := range exceptKeys {
+			m[except] = 1
+		}
+	}
+	for k := range data {
+		if _, ok := m[k]; ok {
+			continue
+		}
+		value := data[k]
+		if !includeEmpty && value == "" {
+			continue
+		}
+		if onlyValues {
+			keyList = append(keyList, k)
+		} else {
+			list = append(list, fmt.Sprintf("%s%s%s", k, KeyValueSep, value))
+		}
+	}
+	if onlyValues {
+		sort.Strings(keyList)
+		for _, v := range keyList {
+			list = append(list, data[v])
+		}
+	} else {
+		sort.Strings(list)
+	}
+	return strings.Join(list, sep)
+}