diff --git a/Readme.md b/Readme.md
index 58d3d06..53adccb 100644
--- a/Readme.md
+++ b/Readme.md
@@ -3,7 +3,7 @@
 
 ## 更新日志
 + v3.0.0
-  - Node.js 10.0.0之后不再推荐使用`crypto.createCipher()`, 所以 本库的`cipher()`方法, 内部改为调用`cipheriv()`
+  - Node.js 10.0.0之后不再推荐使用`crypto.createCipher()`, 所以 本库的`cipher()`方法, 内部改为调用`cipheriv()` (Node.js大于10.5.0时, 旧版本的不变)
 
 + v2.1.0
   - 优化`cipher()`等公钥加密方法的`key`和`iv`的默认值为`crypto.scryptSync('', '', 16)`
@@ -252,6 +252,10 @@ crypto.cipher('aes-128-gcm', '123456', 'abcdefg')
 //   authTag: <Buffer c4 a0 3e ab e5 34 a0 ea 25 02 f0 91 06 f7 3b dd> 
 // }
 
+// v3.x 之后, decipher()同理
+crypto.cipher('aes-128-cbc', '123456', {key})
+// 等价于
+crypto.cipheriv('aes-128-cbc', '123456', {key}, EMPTY_IV) // 其中 EMPTY_IV = crypto.scryptSync('', '', 16)
 ```
 
 
diff --git a/package.json b/package.json
index 8589bd5..5c17cb8 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "crypto.js",
-  "version": "2.1.0",
+  "version": "3.0.0",
   "description": "原生crypto加密模块的二次封装,简化常用加密函数的使用",
   "keywords": [
     "md5",
diff --git a/src/helper.mjs b/src/helper.mjs
index 6467c15..070196d 100644
--- a/src/helper.mjs
+++ b/src/helper.mjs
@@ -11,10 +11,10 @@ const AUTH_MODE = [
   'aes-192-ocb',
   'aes-256-ocb'
 ]
-// const VERSION = +process.versions.node
-//   .split('.')
-//   .slice(0, 2)
-//   .join('.')
+const VERSION = +process.versions.node
+  .split('.')
+  .slice(0, 2)
+  .join('.')
 
 // <Buffer d7 2c 87 d0 f0 77 c7 76 6f 29 85 df ab 30 e8 95>
 const EMPTY_KEY = crypto.scryptSync
@@ -45,9 +45,9 @@ export default {
 
   cipher(mode, data, key = EMPTY_KEY, inEncode, outEncode) {
     // 10.0.0之后, createCipher方法不推荐使用了
-    // if (VERSION >= 10.5) {
-    //   return this.cipheriv(mode, data, key, EMPTY_KEY, inEncode, outEncode)
-    // }
+    if (VERSION >= 10.5) {
+      return this.cipheriv(mode, data, key, EMPTY_KEY, inEncode, outEncode)
+    }
     let isBuffer = Buffer.isBuffer(data)
     inEncode = isBuffer ? 'binary' : inEncode || 'utf8'
     outEncode = outEncode || 'base64'
@@ -64,9 +64,9 @@ export default {
 
   decipher(mode, data, key = EMPTY_KEY, tag, inEncode, outEncode) {
     // 10.0.0之后, createCipher方法不推荐使用了
-    // if (VERSION >= 10.5) {
-    //   return this.decipheriv(mode, data, key, EMPTY_KEY, tag, inEncode, outEncode)
-    // }
+    if (VERSION >= 10.5) {
+      return this.decipheriv(mode, data, key, EMPTY_KEY, tag, inEncode, outEncode)
+    }
 
     let isBuffer = Buffer.isBuffer(data)
     inEncode = isBuffer ? 'binary' : inEncode || 'base64'