fix rsa util

internal/util/rsa_util.go

@@ -1,6 +1,7 @@
 package util
 
 import (
+	"crypto/rand"
 	"crypto/rsa"
 	"crypto/x509"
 	"encoding/base64"
@@ -22,7 +23,7 @@ func EncryptWithPublicKey(data string, pemBytes []byte) (string, error) {
 	if !ok {
 		return "", errors.New("not RSA public key")
 	}
-	ciphertext, err := rsa.EncryptPKCS1v15(nil, pubKey, []byte(data))
+    ciphertext, err := rsa.EncryptPKCS1v15(rand.Reader, pubKey, []byte(data))
     if err != nil {
         return "", err
     }