diff --git a/coretool.js b/coretool.js
index ce57c21..cb798b7 100644
--- a/coretool.js
+++ b/coretool.js
@@ -160,7 +160,7 @@ module.exports = {
    * @return {*}
    * @memberof TICrypto
    */
-  aiid_to_regcode (aiid) {
+  aiid_to_aiidcode (aiid) {
     const alphabet = 'e5fcdg3hqa4b1n0pij2rstuv67mwx89klyz'
     const base = 16367
     let num = (aiid + base) * (base - alphabet.length)
@@ -182,7 +182,7 @@ module.exports = {
    * @return {*}
    * @memberof TICrypto
    */
-  regcode_to_aiid (code) {
+  aiidcode_to_aiid (code) {
     if (typeof code === 'string' && /^[a-zA-Z0-9]+$/.test(code)) {
       const alphabet = 'e5fcdg3hqa4b1n0pij2rstuv67mwx89klyz'
       const base = 16367