diff --git a/share/views.py b/share/views.py
index 4010efaabf..28fb7e6b4e 100644
--- a/share/views.py
+++ b/share/views.py
@@ -40,7 +40,13 @@ def share_repo(request):
     repo_id = form.cleaned_data['repo_id']
     from_email = request.user.username
 
-    # Test whether user is the repo owner
+    repo = get_repo(repo_id)
+    if not repo:
+        raise Http404
+
+    is_encrypted = True if repo.encrypted else False
+        
+    # Test whether user is the repo owner.
     if not validate_owner(request, repo_id):
         return render_permission_error(request, u'只有目录拥有者有权共享目录')
     
@@ -97,7 +103,8 @@ def share_repo(request):
                 # Generate shared link and send mail if user has not registered.
                 kwargs = {'repo_id': repo_id,
                           'repo_owner': from_email,
-                          'anon_email': to_email
+                          'anon_email': to_email,
+                          'is_encrypted': is_encrypted,
                           }
                 anonymous_share(request, **kwargs)
             else:
@@ -169,6 +176,14 @@ def anonymous_share(request, email_template_name='repo/anonymous_share_email.htm
     repo_id = kwargs['repo_id']
     repo_owner = kwargs['repo_owner']
     anon_email = kwargs['anon_email']
+    is_encrypted = kwargs['is_encrypted']
+
+    # Encrypt repo can not be shared to unregistered user.
+    if is_encrypted:
+        msg = u'共享给 %s 失败，加密目录无法共享给站外邮箱。' % anon_email
+        messages.error(request, msg)
+        return
+    
     token = anon_share_token_generator.make_token()
 
     anon_share = AnonymousShare()
diff --git a/templates/decrypt_repo_form.html b/templates/decrypt_repo_form.html
new file mode 100644
index 0000000000..3e71a22158
--- /dev/null
+++ b/templates/decrypt_repo_form.html
@@ -0,0 +1,26 @@
+{% extends base_template %}
+
+{% load url from future %}
+
+{% block main_panel %}
+    <div class="repo-file-list-outer-container">
+        <div class="repo-file-list-inner-container">
+            <div class="repo-file-list-not-show">
+                <p class="access-notice">该目录已加密。如需在线查看里面的内容，请输入解密密码。密码只会在服务器上暂存1小时。</p>
+                <form action="{{ SITE_ROOT }}repo/{{ repo.id }}/" method="post">
+                    <label>密码：</label>
+                    <input type="hidden" name="repo_id" value="{{ repo.id }}" />
+                    <input type="hidden" name="username" value="{{ request.user.username }}" />
+                    <input id="id_password" type="password" name="password" maxlength="64" />
+                    {% for error in form.errors.values %}
+                    <p class="error">{{ error|escape }}</p>
+                    {% endfor %}
+                    <input type="submit" value="提交" />
+                </form>
+            </div>
+        </div>
+    </div>
+{% endblock %}
+
+{% block extra_script %}
+{% endblock %}
diff --git a/templates/repo.html b/templates/repo.html
index 89ea262d3f..5257d3b4e1 100644
--- a/templates/repo.html
+++ b/templates/repo.html
@@ -16,26 +16,22 @@
 {% block main_panel %}
     <div class="w100 ovhd">
         <h2 class="fleft">{{repo.props.name}}</h2>
-        {% if not repo.props.encrypted or password_set %}
-        {% if can_access %}
+        {% if user_perm == 'rw' %}
         <button id="repo-download-btn" class="fright">同步到本地</button>
         {% endif %}
-        {% endif %}
     </div>
     <div id="repo-basic-info">
       <p class="desc">{{repo.props.desc}}</p>
       <p class="size">大小：{{ repo_size|filesizeformat }}</p>
     </div>
       
-    {% if not repo.props.encrypted or password_set %}
-    {% if can_access %}
     <div id="repo-latest-commit">
         <p class="commit-msg ovhd">
         <span class="fleft">
             {{ current_commit.props.desc|translate_commit_desc }}
             <a class="lsch" href="{{ SITE_ROOT }}repo/history/changes/{{ repo.id }}/?commit_id={{ current_commit.id }}" data="{{ current_commit.props.ctime|tsstr_sec }}">详情</a>
         </span>
-        {% if request.user.is_authenticated %}
+        {% if user_perm == 'rw' %}
         <a href="{% url 'seahub.views.repo_history' repo.id %}" class="more fright">更多历史</a>
         {% endif %}
         </p>
@@ -52,28 +48,10 @@
         </p>
         <div id="ls-ch" class="hide"></div><!--list modification details of a commit-->
     </div>
-    {% endif %}
-    {% endif %}
 
     <div class="repo-file-list-outer-container">
         <div class="repo-file-list-inner-container">
-            {% if repo.props.encrypted and not password_set %}
-            <div class="repo-file-list-not-show">
-                <p class="access-notice">该目录已加密。如需在线查看里面的内容，请输入解密密码。密码只会在服务器上暂存1小时。</p>
-                <form action="{{ SITE_ROOT }}repo/{{ repo.id }}/" method="post">
-                    <label>密码：</label>
-                    <input type="hidden" name="repo_id" value="{{ repo.id }}" />
-                    <input type="hidden" name="username" value="{{ request.user.username }}" />
-                    <input id="id_password" type="password" name="password" maxlength="64" />
-                    {% for error in form.errors.values %}
-                    <p class="error">{{ error|escape }}</p>
-                    {% endfor %}
-                    <input type="submit" value="提交" />
-                </form>
-            </div>
-
-            {% else %}
-            {% if not can_access %}
+            {% if not user_perm %}
             <div class="repo-file-list-not-show">
                 <p class="access-notice">无法在线查看该同步目录。</p>
             </div>
@@ -89,7 +67,7 @@
                 {% endif %}
                 {% endfor %}
                 </p>
-                {% if request.user.is_authenticated %}
+                {% if user_perm == 'rw' %}
                 <div class="repo-op fright">
                     <button data="{{ SITE_ROOT }}repo/upload_file/{{repo.id}}/?p={{ path|urlencode }}" id="upload-file" class="op-btn">上传</button>
                     <button id="add-new-dir" class="op-btn">新建目录</button>
@@ -97,6 +75,7 @@
                 </div>
                 {% endif %}
             </div>
+            <!-- /.repo-file-list-topbar -->
             <table class="repo-file-list">
                 <tr>
                     <th width="5%"></th>
@@ -114,7 +93,7 @@
 
                     <td></td>
                     <td>
-                        {% if request.user.is_authenticated %}
+                      {% if user_perm == 'rw' %}
                         <div class="repo-file-op vh">
                             <div class="displayed-op"> 
                                 <a class="op dir-rename" href="#" data="{{ dirent.obj_name }}">重命名</a>
@@ -127,7 +106,7 @@
                                 <li><a class="op dir-cp" href="#" data="{{ dirent.obj_name }}">复制</a></li>
                             </ul>
                         </div>
-                        {% endif %}
+                      {% endif %}
                     </td>
                 </tr>
                 {% endfor %}
@@ -141,6 +120,7 @@
 
                     <td>{{ dirent.file_size|filesizeformat }}</td>
                     <td>
+                      {% if user_perm == 'rw' %}
                         <div class="repo-file-op vh">
                             <div class="displayed-op">
                                 <a class="op" href="{{ SITE_ROOT }}repo/{{ repo.props.id }}/{{ dirent.props.obj_id }}/?file_name={{ dirent.props.obj_name }}&op=download">下载</a>
@@ -150,21 +130,20 @@
                             <img src="{{ MEDIA_URL }}img/dropdown-arrow.png" title="更多操作" alt="更多操作" class="more-op-icon" data="no-popup" />
                             <ul class="hidden-op hide">
                                 <!--li><a class="op" href="{{ SITE_ROOT }}repo/{{ repo.props.id }}/{{ dirent.props.obj_id }}/?file_name={{ dirent.props.obj_name }}&op=download">下载</a></li-->
-                                {% if request.user.is_authenticated %}
                                 <li><a class="op" href="{{ SITE_ROOT }}repo/{{ repo.props.id }}/{{ dirent.props.obj_id }}/?p={{ path|urlencode }}&file_name={{ dirent.props.obj_name|urlencode }}&op=del">删除</a></li>
                                 <!--li><a class="op file-rename" href="#" data="{{ dirent.obj_name }}">重命名</a></li-->
                                 <li><a class="op file-mv" href="#" data="{{ dirent.obj_name }}">移动</a></li>
                                 <li><a class="op file-cp" href="#" data="{{ dirent.obj_name }}">复制</a></li>
                                 <!--li><a class="op file-update" href="{{ SITE_ROOT }}repo/update_file/{{repo.id}}/?p={{ path|urlencode }}{{dirent.obj_name|urlencode}}">更新</a></li-->
                                 <li><a href="{{ SITE_ROOT }}repo/revert_file/{{ repo.id }}/?commit={{ current_commit.id }}&p={{path|urlencode}}{{ dirent.obj_name|urlencode }}&from=repo_history" class="op file-revert">还原</a></li>
-                                {% endif %}
                             </ul>
                         </div>
+                      {% endif %}
                     </td>
                 </tr>
                 {% endfor %}
             </table>
-            {% endif %}
+            <!-- /.repo-file-list -->
             {% endif %}
         </div>
     </div>
diff --git a/templates/repo_history_view.html b/templates/repo_history_view.html
index 9f781efd2b..639aa506f8 100644
--- a/templates/repo_history_view.html
+++ b/templates/repo_history_view.html
@@ -9,7 +9,6 @@
         <button data="{{ SITE_ROOT }}repo/history/{{ repo.id }}/" class="fright" id="back-to-history-list">返回历史列表</button>
     </div>
 
-    {% if can_access %}
     <div id="repo-latest-commit">
         <p class="commit-msg">{{ current_commit.props.desc|translate_commit_desc }}</p>
         <p class="meta-info">
@@ -24,25 +23,10 @@
         <span class="time">{{ current_commit.props.ctime|translate_commit_time }}</span>
         </p>
     </div>
-    {% endif %}
 
     <div class="repo-file-list-outer-container">
         <div class="repo-file-list-inner-container">
-            {% if repo.props.encrypted and not password_set %}
-            <div class="repo-file-list-not-show">
-                <p class="access-notice">该目录已加密。如需在线查看里面的内容，请输入解密密码。密码只会在服务器上暂存1小时。</p>
-                <form action="{{ SITE_ROOT }}repo/{{ repo.id }}/" method="post">
-                    <label>密码：</label>
-                    <input id="id_password" type="password" name="password" maxlength="64" /><br />
-                    {% if error %}
-                    <p class="error">{{ error }}</p>
-                    {% endif %}
-                    <input type="submit" value="提交" />
-                </form>
-            </div>
-
-            {% else %}
-            {% if not can_access %}
+            {% if not user_perm %}
             <div class="repo-file-list-not-show">
                 <p class="access-notice">无法在线查看该同步目录。</p>
             </div>
@@ -59,6 +43,7 @@
                 {% endfor %}
                 </p>
             </div>
+            <!-- /.repo-file-list-topbar -->
             <table class="repo-file-list">
                 <tr>
                     <th width="5%"></th>
@@ -93,7 +78,7 @@
                 </tr>
                 {% endfor %}
             </table>
-            {% endif %}
+            <!-- /.repo-file-list -->
             {% endif %}
         </div>
     </div>
diff --git a/views.py b/views.py
index af7c70a407..54ca9aa113 100644
--- a/views.py
+++ b/views.py
@@ -109,7 +109,15 @@ def access_to_repo(request, repo_id, repo_ap=None):
         return True if token else False
     else:
         return check_permission(repo_id, request.user.username)
-    
+
+def get_user_permission(request, repo_id):
+    if request.user.is_authenticated():
+        return 'rw' if check_permission(repo_id, request.user.username) else \
+            ''
+    else:
+        token = request.COOKIES.get('anontoken', None)
+        return 'r' if token else ''
+        
 def gen_path_link(path, repo_name):
     """
     Generate navigate paths and links in repo page.
@@ -210,7 +218,8 @@ class RepoMixin(object):
         self.path = self.get_path()
         self.repo = self.get_repo(self.repo_id)
         self.repo_size = self.get_repo_size()        
-        self.can_access = access_to_repo(self.request, self.repo_id)
+        # self.can_access = access_to_repo(self.request, self.repo_id)
+        self.user_perm = get_user_permission(self.request, self.repo_id)
         self.current_commit = self.get_current_commit()
         self.password_set = self.is_password_set()
 
@@ -239,7 +248,13 @@ class RepoView(CtxSwitchRequiredMixin, RepoMixin, TemplateResponseMixin,
     View to show repo page and handle post request to decrypt repo.
     """
     form_class = RepoPassowrdForm
-    template_name = 'repo.html'
+
+    def get_template_names(self):
+        if self.repo.encrypted and not self.password_set:
+            template_name = 'decrypt_repo_form.html'
+        else:
+            template_name = 'repo.html'
+        return template_name
 
     def get_accessible_repos(self):
         if self.user.is_authenticated():
@@ -266,7 +281,8 @@ class RepoView(CtxSwitchRequiredMixin, RepoMixin, TemplateResponseMixin,
 
     def get_context_data(self, **kwargs):
         kwargs['repo'] = self.repo
-        kwargs['can_access'] = self.can_access
+        # kwargs['can_access'] = self.can_access
+        kwargs['user_perm'] = self.user_perm
         kwargs['current_commit'] = self.get_current_commit()
         kwargs['password_set'] = self.password_set
         kwargs['repo_size'] = self.repo_size
@@ -284,8 +300,13 @@ class RepoHistoryView(LoginRequiredMixin, CtxSwitchRequiredMixin, RepoMixin,
     """
     View to show repo page in history.
     """
-    template_name = 'repo_history_view.html'
-
+    def get_template_names(self):
+        if self.repo.encrypted and not self.password_set:
+            template_name = 'decrypt_repo_form.html'
+        else:
+            template_name = 'repo_history_view.html'            
+        return template_name
+    
     def get_current_commit(self):
         commit_id = self.request.GET.get('commit_id', '')
         if not commit_id:
@@ -297,7 +318,8 @@ class RepoHistoryView(LoginRequiredMixin, CtxSwitchRequiredMixin, RepoMixin,
 
     def get_context_data(self, **kwargs):
         kwargs['repo'] = self.repo
-        kwargs['can_access'] = self.can_access
+        # kwargs['can_access'] = self.can_access
+        kwargs['user_perm'] = self.user_perm
         kwargs['current_commit'] = self.get_current_commit()
         kwargs['password_set'] = self.password_set
         kwargs['repo_size'] = self.repo_size