diff --git a/components/Common.vue b/components/Common.vue
index 81e8a53..edf85e3 100644
--- a/components/Common.vue
+++ b/components/Common.vue
@@ -78,7 +78,6 @@
 </template>
 
 <script>
-import md5 from 'md5'
 import Navbar from '@theme/components/Navbar'
 import Sidebar from '@theme/components/Sidebar'
 import { resolveSidebarItems } from '@theme/helpers/utils'
@@ -195,7 +194,7 @@ export default {
       }
 
       let { keys } = keyPage
-      keys = keys.map(item => md5(item))
+      keys = keys.map(item => item.toLowerCase())
       this.isHasKey = keys && keys.indexOf(sessionStorage.getItem('key')) > -1
     },
     hasPageKey () {
@@ -205,7 +204,7 @@ export default {
         return
       }
 
-      pageKeys = pageKeys.map(item => md5(item))
+      pageKeys = pageKeys.map(item => item.toLowerCase())
 
       this.isHasPageKey = pageKeys.indexOf(sessionStorage.getItem(`pageKey${window.location.pathname}`)) > -1
     },
diff --git a/components/Password.vue b/components/Password.vue
index b43b0ec..1934b2e 100644
--- a/components/Password.vue
+++ b/components/Password.vue
@@ -104,11 +104,11 @@ export default {
     },
     isHasKey () {
       let { keys } = this.$themeConfig.keyPage
-      keys = keys.map(item => md5(item))
+      keys = keys.map(item => item.toLowerCase())
       return keys.indexOf(sessionStorage.getItem('key')) > -1
     },
     isHasPageKey () {
-      const pageKeys = this.$frontmatter.keys.map(item => md5(item))
+      const pageKeys = this.$frontmatter.keys.map(item => item.toLowerCase())
       const pageKey = `pageKey${window.location.pathname}`
 
       return pageKeys && pageKeys.indexOf(sessionStorage.getItem(pageKey)) > -1