diff --git a/card_pay/api.go b/card_pay/api.go
index c342e63..a17565f 100644
--- a/card_pay/api.go
+++ b/card_pay/api.go
@@ -5,6 +5,7 @@ import (
 	"crypto"
 	"crypto/rand"
 	"crypto/rsa"
+	"crypto/x509"
 	"encoding/base64"
 	"fmt"
 	"golang.org/x/crypto/ssh"
@@ -140,3 +141,25 @@ func CardPayGetSign(privateKeyStr string, data string) (string, error) {
 	}
 	return base64.StdEncoding.EncodeToString(sign), nil
 }
+func RsaEncrypts(pubStr, data string) string {
+	// 公钥加密
+	// 读取公钥证书
+	certSlc, errCert := base64.StdEncoding.DecodeString(pubStr)
+	if errCert != nil {
+		return ""
+	}
+	//证书解析
+	certBody, errCertBody := x509.ParseCertificate(certSlc)
+	if errCertBody != nil {
+		return ""
+	}
+	// 提取公钥
+	rsaPublicKey := certBody.PublicKey.(*rsa.PublicKey)
+	// 对明文进行加密，PKCS（公钥密码标准），#1就是RSA的标准
+	cipherByte, err := rsa.EncryptPKCS1v15(rand.Reader, rsaPublicKey, []byte(data))
+	if err != nil {
+		return ""
+	}
+	return base64.StdEncoding.EncodeToString(cipherByte)
+
+}
diff --git a/card_pay/card_pay.go b/card_pay/card_pay.go
index 56de304..6b457bc 100644
--- a/card_pay/card_pay.go
+++ b/card_pay/card_pay.go
@@ -4,7 +4,7 @@ package card_pay
 func BindCard(keyArr, param map[string]string) (string, error) {
 	//param = map[string]string{
 	//	"version":          "2.0",
-	//	"mchtOrderNo":      "123",                              //流水号不能为空
+	//	"mchtOrderNo":      "123456",                           //流水号不能为空
 	//	"memberId":         "562902003186055",                  //分账模式（splitModel）为“1-普通分账”的，该值一律传商户自编的编号。
 	//	"transType":        "01",                               //值可填“01 快捷支付、02 代收”。		不填时默认 01 快捷支付
 	//	"userName":         RsaEncrypts("黄加价"),                 //分账主体商户姓名