diff --git a/app/controllers/api/v1/base_controller.rb b/app/controllers/api/v1/base_controller.rb
index 6b4baa981..207b4ca8d 100644
--- a/app/controllers/api/v1/base_controller.rb
+++ b/app/controllers/api/v1/base_controller.rb
@@ -10,6 +10,38 @@ class Api::V1::BaseController < ApplicationController
 
   protected
 
+  def add_member_to_subject(subject)
+    class_name = subject.class.name.downcase
+    if member.present? && subject.add_member(member)
+      render_json_response subject, "#{member.class.to_s} '#{member.id}' has been added to #{class_name} successfully"
+    else
+      render_validation_error subject, "Member has not been added to #{class_name}"
+    end
+  end
+
+  def remove_member_from_subject(subject)
+    class_name = subject.class.name.downcase
+    if member.present? && subject.remove_member(member)
+      render_json_response subject, "#{member.class.to_s} '#{member.id}' has been removed from #{class_name} successfully"
+    else
+      render_validation_error subject, "Member has not been removed from #{class_name}"
+    end
+  end
+
+  def destroy_subject(subject)
+    subject.destroy # later with resque
+    render_json_response subject, "#{subject.class.name} has been destroyed successfully"
+  end
+
+  def update_subject(subject)
+    class_name = subject.class.name
+    if subject.update_attributes(params[class_name.downcase.to_sym] || {})
+      render_json_response subject, "#{class_name} has been updated successfully"
+    else
+      render_validation_error subject, "#{class_name} has not been updated"
+    end
+  end
+
   def paginate_params
     per_page = params[:per_page].to_i
     per_page = 20 if per_page < 1
@@ -36,4 +68,13 @@ class Api::V1::BaseController < ApplicationController
     render_json_response(subject, message, 422)
   end
 
+  private
+
+  def member
+    if @member.blank? && %w(User Group).include?(params[:type])
+      @member = params[:type].constantize.where(:id => params[:member_id]).first
+    end
+    @member
+  end
+
 end
diff --git a/app/controllers/api/v1/platforms_controller.rb b/app/controllers/api/v1/platforms_controller.rb
index ff37d009a..007237092 100644
--- a/app/controllers/api/v1/platforms_controller.rb
+++ b/app/controllers/api/v1/platforms_controller.rb
@@ -33,11 +33,7 @@ class Api::V1::PlatformsController < Api::V1::BaseController
     platform_params = params[:platform] || {}
     owner = User.where(:id => platform_params[:owner_id]).first
     platform_params[:owner] = owner if owner
-    if @platform.update_attributes(platform_params)
-      render_json_response @platform, 'Platform has been updated successfully'
-    else
-      render_validation_error @platform, 'Platform has not been updated'
-    end
+    update_subject @platform
   end
 
   def members
@@ -45,19 +41,11 @@ class Api::V1::PlatformsController < Api::V1::BaseController
   end
 
   def add_member
-    if member.present? && @platform.add_member(member)
-      render_json_response @platform, "#{member.class.to_s} '#{member.id}' has been added to platform successfully"
-    else
-      render_validation_error @platform, 'Member has not been added to platform'
-    end
+    add_member_to_subject @platform
   end
 
   def remove_member
-    if member.present? && @platform.remove_member(member)
-      render_json_response @platform, "#{member.class.to_s} '#{member.id}' has been removed from platform successfully"
-    else
-      render_validation_error @platform, 'Member has not been removed from platform'
-    end
+    remove_member_from_subject @platform
   end
 
   def clone
@@ -77,21 +65,7 @@ class Api::V1::PlatformsController < Api::V1::BaseController
   end
 
   def destroy
-    @platform.destroy # later with resque
-    render_json_response @platform, 'Platform has been destroyed successfully'
-  end
-
-  private
-
-  def member
-    return @member if @member
-    if params[:type] == 'User'
-      member = User
-    elsif params[:type] == 'Group'
-      member = Group
-    end
-    @member = member.where(:id => params[:member_id]).first if member
-    @member ||= ''
+    destroy_subject @platform
   end
 
 end
diff --git a/app/controllers/api/v1/repositories_controller.rb b/app/controllers/api/v1/repositories_controller.rb
index 92546fe97..c438478d7 100644
--- a/app/controllers/api/v1/repositories_controller.rb
+++ b/app/controllers/api/v1/repositories_controller.rb
@@ -7,7 +7,57 @@ class Api::V1::RepositoriesController < Api::V1::BaseController
   load_and_authorize_resource :repository, :through => :platform, :shallow => true
 
   def show
-
   end
 
-end
+  def update
+    update_subject @repository
+  end
+
+  def add_member
+    add_member_to_subject @repository
+  end
+
+  def remove_member
+    remove_member_from_subject @repository
+  end
+
+  def destroy
+    destroy_subject @repository
+  end
+
+  def add_project
+    project = Project.where(:id => params[:project_id]).first
+    if project
+      begin
+        @repository.projects << project
+        render_json_response @repository, "Project '#{project.id}' has been added to repository successfully"
+      rescue ActiveRecord::RecordInvalid
+        render_validation_error @repository, t('flash.repository.project_not_added')
+      end
+    else
+      render_validation_error @repository, "Project has not been added to repository"
+    end
+  end
+
+  def remove_project
+    project_id = params[:project_id]
+    ProjectToRepository.where(:project_id => project_id, :repository_id => @repository.id).destroy_all
+    render_json_response @repository, "Project '#{project_id}' has been removed from repository successfully"
+  end
+
+  def signatures
+    key_pair = @repository.key_pair
+    key_pair.destroy if key_pair
+    key_pair = @repository.build_key_pair(params[:repository])
+    key_pair.user_id = current_user.id
+    if key_pair.save
+      render_json_response @repository, 'Signatures have been updated for repository successfully'
+    else
+      message = 'Signatures have not been updated for repository'
+      errors = key_pair.errors.full_messages.join('. ')
+      (message << '. ' << errors) if errors.present?
+      render_json_response @repository, message, 422
+    end
+  end
+
+end
\ No newline at end of file
diff --git a/app/controllers/platforms/repositories_controller.rb b/app/controllers/platforms/repositories_controller.rb
index 7afc34a21..8767fbb94 100644
--- a/app/controllers/platforms/repositories_controller.rb
+++ b/app/controllers/platforms/repositories_controller.rb
@@ -131,8 +131,7 @@ class Platforms::RepositoriesController < Platforms::BaseController
   end
 
   def remove_project
-    @project = Project.find(params[:project_id])
-    ProjectToRepository.where(:project_id => @project.id, :repository_id => @repository.id).destroy_all
+    ProjectToRepository.where(:project_id => params[:project_id], :repository_id => @repository.id).destroy_all
     redirect_to platform_repository_path(@platform, @repository), :notice => t('flash.repository.project_removed')
   end
 
diff --git a/app/models/ability.rb b/app/models/ability.rb
index 24c4a7a6a..382673bc5 100644
--- a/app/models/ability.rb
+++ b/app/models/ability.rb
@@ -100,7 +100,7 @@ class Ability
         can [:read, :projects_list], Repository, :platform => {:owner_type => 'Group', :owner_id => user.group_ids}
         can([:read, :projects_list], Repository, read_relations_for('repositories', 'platforms')) {|repository| local_reader? repository.platform}
         can([:create, :edit, :update, :destroy, :projects_list, :add_project, :remove_project], Repository) {|repository| local_admin? repository.platform}
-        can([:remove_members, :remove_member, :add_member], Repository) {|repository| owner?(repository.platform) || local_admin?(repository.platform)}
+        can([:remove_members, :remove_member, :add_member, :signatures], Repository) {|repository| owner?(repository.platform) || local_admin?(repository.platform)}
         can([:add_project, :remove_project], Repository) {|repository| repository.members.exists?(:id => user.id)}
         can(:clear, Platform) {|platform| local_admin?(platform) && platform.personal?}
         can([:change_visibility, :settings, :destroy, :edit, :update], Repository) {|repository| owner? repository.platform}
diff --git a/app/models/project.rb b/app/models/project.rb
index 1c8bc74a9..43baaa007 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -54,7 +54,7 @@ class Project < ActiveRecord::Base
     where("(projects.owner_id in (?) AND projects.owner_type = 'Group') OR (projects.owner_id in (?) AND projects.owner_type = 'User')", group_owner_ids, user_owner_ids)
   }
 
-
+  before_validation :truncate_name, :on => :create
   before_create :set_maintainer
   after_save :attach_to_personal_repository
 
@@ -177,6 +177,10 @@ class Project < ActiveRecord::Base
 
   protected
 
+  def truncate_name
+    self.name = name.strip if name
+  end
+
   def attach_to_personal_repository
     owner_rep = self.owner.personal_repository
     if is_package
diff --git a/config/routes.rb b/config/routes.rb
index 8d741e135..3737aaa83 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -32,7 +32,15 @@ Rosa::Application.routes.draw do
           put :clear
         }
       end
-      resources :repositories, :only => [:show]
+      resources :repositories, :only => [:show, :update, :destroy] do
+        member {
+          put :add_member
+          delete :remove_member
+          put :add_project
+          delete :remove_project
+          put :signatures
+        }
+      end
       resources :projects, :only => [:show] do
         collection { get :get_id }
         member {
diff --git a/spec/controllers/api/v1/platforms_controller_spec.rb b/spec/controllers/api/v1/platforms_controller_spec.rb
index fc906dbae..682bce637 100644
--- a/spec/controllers/api/v1/platforms_controller_spec.rb
+++ b/spec/controllers/api/v1/platforms_controller_spec.rb
@@ -52,7 +52,7 @@ shared_examples_for 'api platform user with writer rights' do
       delete :remove_member, {:member_id => member.id, :type => 'User', :id => @platform.id}, :format => :json
     end
 
-    it 'should be able to perform update action' do
+    it 'should be able to perform remove_member action' do
       response.should be_success
     end
     it 'ensures that member has been removed from platform' do
diff --git a/spec/controllers/api/v1/repositories_controller_spec.rb b/spec/controllers/api/v1/repositories_controller_spec.rb
index 7ca1dffc4..1aa7b8ffb 100644
--- a/spec/controllers/api/v1/repositories_controller_spec.rb
+++ b/spec/controllers/api/v1/repositories_controller_spec.rb
@@ -35,6 +35,209 @@ shared_examples_for "api repository user without show rights" do
   end
 end
 
+shared_examples_for 'api repository user with writer rights' do
+
+  context 'api repository user with update rights' do
+    before do
+      put :update, {:repository => {:description => 'new description'}, :id => @repository.id}, :format => :json
+    end
+
+    it 'should be able to perform update action' do
+      response.should be_success
+    end
+    it 'ensures that repository has been updated' do
+      @repository.reload
+      @repository.description.should == 'new description'
+    end
+  end
+
+  context 'api repository user with add_member rights' do
+    let(:member) { FactoryGirl.create(:user) }
+    before do
+      put :add_member, {:member_id => member.id, :type => 'User', :id => @repository.id}, :format => :json
+    end
+
+    it 'should be able to perform add_member action' do
+      response.should be_success
+    end
+    it 'ensures that new member has been added to repository' do
+      @repository.members.should include(member)
+    end
+  end
+
+  context 'api repository user with remove_member rights' do
+    let(:member) { FactoryGirl.create(:user) }
+    before do
+      @repository.add_member(member)
+      delete :remove_member, {:member_id => member.id, :type => 'User', :id => @repository.id}, :format => :json
+    end
+
+    it 'should be able to perform remove_member action' do
+      response.should be_success
+    end
+    it 'ensures that member has been removed from repository' do
+      @repository.members.should_not include(member)
+    end
+  end
+
+  context 'api repository user with destroy rights' do
+    it 'should be able to perform destroy action for main platform' do
+      delete :destroy, :id => @repository.id, :format => :json
+      response.should be_success
+    end
+    it 'ensures that repository of main platform has been destroyed' do
+      lambda { delete :destroy, :id => @repository.id, :format => :json }.should change{ Repository.count }.by(-1)
+    end
+    it 'should not be able to perform destroy action for repository of personal platform' do
+      delete :destroy, :id => @personal_repository.id, :format => :json
+      response.should_not be_success
+    end
+    it 'ensures that repository of personal platform has not been destroyed' do
+      lambda { delete :destroy, :id => @personal_repository.id, :format => :json }.should_not change{ Repository.count }
+    end
+  end
+
+  context 'api repository user with add_project rights' do
+    before { put :add_project, :id => @repository.id, :project_id => @project.id, :format => :json }
+    it 'should be able to perform add_project action' do
+      response.should be_success
+    end
+    it 'ensures that project has been added to repository' do
+      @repository.projects.should include(@project)
+    end
+  end
+
+  context 'api repository user with remove_project rights' do
+    before do
+      @repository.projects << @project
+      delete :remove_project, :id => @repository.id, :project_id => @project.id, :format => :json
+    end
+    it 'should be able to perform remove_project action' do
+      response.should be_success
+    end
+    it 'ensures that project has been removed from repository' do
+      @repository.reload
+      @repository.projects.should_not include(@project)
+    end
+  end
+
+  context 'api repository user with update signatures rights' do
+    before do
+      stub_key_pairs_calls
+      put :signatures, :id => @repository.id, :repository => {:public => 'iampublic', :secret => 'iamsecret'}, :format => :json
+    end
+    it 'should be able to perform signatures action' do
+      response.should be_success
+    end
+    it 'ensures that signatures has been updated' do
+      @repository.key_pair.should_not be_nil
+    end
+  end
+
+end
+
+shared_examples_for 'api repository user without writer rights' do
+
+  context 'api repository user without update rights' do
+    before do
+      put :update, {:repository => {:description => 'new description'}, :id => @repository.id}, :format => :json
+    end
+
+    it 'should not be able to perform update action' do
+      response.should_not be_success
+    end
+    it 'ensures that repository has not been updated' do
+      @repository.reload
+      @repository.description.should_not == 'new description'
+    end
+  end
+
+  context 'api repository user without add_member rights' do
+    let(:member) { FactoryGirl.create(:user) }
+    before do
+      put :add_member, {:member_id => member.id, :type => 'User', :id => @repository.id}, :format => :json
+    end
+
+    it 'should not be able to perform add_member action' do
+      response.should_not be_success
+    end
+    it 'ensures that new member has not been added to repository' do
+      @repository.members.should_not include(member)
+    end
+  end
+
+  context 'api repository user without remove_member rights' do
+    let(:member) { FactoryGirl.create(:user) }
+    before do
+      @repository.add_member(member)
+      delete :remove_member, {:member_id => member.id, :type => 'User', :id => @repository.id}, :format => :json
+    end
+
+    it 'should be able to perform update action' do
+      response.should_not be_success
+    end
+    it 'ensures that member has not been removed from repository' do
+      @repository.members.should include(member)
+    end
+  end
+
+  context 'api repository user without destroy rights' do
+    it 'should not be able to perform destroy action for repository of main platform' do
+      delete :destroy, :id => @repository.id, :format => :json
+      response.should_not be_success
+    end
+    it 'ensures that repository of main platform has not been destroyed' do
+      lambda { delete :destroy, :id => @repository.id, :format => :json }.should_not change{ Repository.count }
+    end
+    it 'should not be able to perform destroy action for repository of personal platform' do
+      delete :destroy, :id => @personal_repository.id, :format => :json
+      response.should_not be_success
+    end
+    it 'ensures that repository of personal platform has not been destroyed' do
+      lambda { delete :destroy, :id => @personal_repository.id, :format => :json }.should_not change{ Repository.count }
+    end
+  end
+
+  context 'api repository user without add_project rights' do
+    before { put :add_project, :id => @repository.id, :project_id => @project.id, :format => :json }
+    it 'should not be able to perform add_project action' do
+      response.should_not be_success
+    end
+    it 'ensures that project has not been added to repository' do
+      @repository.projects.should_not include(@project)
+    end
+  end
+
+  context 'api repository user without remove_project rights' do
+    before do
+      @repository.projects << @project
+      delete :remove_project, :id => @repository.id, :project_id => @project.id, :format => :json
+    end
+    it 'should not be able to perform remove_project action' do
+      response.should_not be_success
+    end
+    it 'ensures that project has not been removed from repository' do
+      @repository.reload
+      @repository.projects.should include(@project)
+    end
+  end
+
+  context 'api repository user without update signatures rights' do
+    before do
+      stub_key_pairs_calls
+      put :signatures, :id => @repository.id, :repository => {:public => 'iampublic', :secret => 'iamsecret'}, :format => :json
+    end
+    it 'should not be able to perform signatures action' do
+      response.should_not be_success
+    end
+    it 'ensures that signatures has not been updated' do
+      @repository.key_pair.should be_nil
+    end
+  end
+
+end
+
+
 describe Api::V1::RepositoriesController do
   before(:each) do
     stub_symlink_methods
@@ -52,8 +255,11 @@ describe Api::V1::RepositoriesController do
       response.status.should == 401
     end
 
-    it_should_behave_like 'api repository user without reader rights for hidden platform' if APP_CONFIG['anonymous_access']
-    it_should_behave_like 'api repository user with show rights' if APP_CONFIG['anonymous_access']
+    if APP_CONFIG['anonymous_access']
+      it_should_behave_like 'api repository user without reader rights for hidden platform'
+      it_should_behave_like 'api repository user with show rights'
+    end
+    it_should_behave_like 'api repository user without writer rights'
   end
 
   context 'for admin' do
@@ -64,6 +270,7 @@ describe Api::V1::RepositoriesController do
 
     it_should_behave_like 'api repository user with reader rights'
     it_should_behave_like 'api repository user with reader rights for hidden platform'
+    it_should_behave_like 'api repository user with writer rights'
   end
 
   context 'for platform owner user' do
@@ -77,6 +284,7 @@ describe Api::V1::RepositoriesController do
 
     it_should_behave_like 'api repository user with reader rights'
     it_should_behave_like 'api repository user with reader rights for hidden platform'
+    it_should_behave_like 'api repository user with writer rights'
   end
 
   context 'for user' do
@@ -88,5 +296,6 @@ describe Api::V1::RepositoriesController do
     it_should_behave_like 'api repository user with reader rights'
     it_should_behave_like 'api repository user without reader rights for hidden platform'
     it_should_behave_like 'api repository user with show rights'
+    it_should_behave_like 'api repository user without writer rights'
   end
 end
diff --git a/spec/models/project_spec.rb b/spec/models/project_spec.rb
index ab13f6ae3..c2892dec4 100644
--- a/spec/models/project_spec.rb
+++ b/spec/models/project_spec.rb
@@ -9,17 +9,35 @@ describe Project do
     @child_child_project = @child_project.fork(FactoryGirl.create(:user))
   end
 
-  context 'for destroy root' do
-    before do
-      @root_project.destroy
+  context 'for destroy' do
+    let!(:root_project) { FactoryGirl.create(:project) }
+    let!(:child_project) { root_project.fork(FactoryGirl.create(:user)) }
+    let!(:child_child_project) { child_project.fork(FactoryGirl.create(:user)) }
+
+    context 'root project' do
+      before { root_project.destroy }
+
+      it "should not be delete child" do
+        Project.where(:id => child_project).count.should == 1
+      end
+
+      it "should not be delete child of the child" do
+        Project.where(:id => child_child_project).count.should == 1
+      end
     end
 
-    it "should not be delete child" do
-      Project.where(:id => @child_project).count.should == 1
-    end
+    pending 'when will be available :orphan_strategy => :adopt' do
+      context 'middle node' do
+        before{ child_project.destroy }
 
-    it "should not be delete child of the child" do
-      Project.where(:id => @child_child_project).count.should == 1
+        it "should set root project as a parent for orphan child" do
+          Project.find(child_child_project).ancestry == root_project
+        end
+
+        it "should not be delete child of the child" do
+          Project.where(:id => child_child_project).count.should == 1
+        end
+      end
     end
   end
 
@@ -48,19 +66,17 @@ describe Project do
     end
   end
 
-  # uncommit when will be available :orphan_strategy => :adopt
+  context 'truncates project name before validation' do
+    let!(:project) { FactoryGirl.build(:project, :name => '  test_name  ') }
 
-  #context 'for destroy middle node' do
-  #  before(:each) do
-  #    @child_project.destroy
-  #  end
+    it 'ensures that validation passed' do
+      project.valid?.should be_true
+    end
+    
+    it 'ensures that name has been truncated' do
+      project.valid?
+      project.name.should == 'test_name'
+    end
+  end
 
-  #  it "should set root project as a parent for orphan child" do
-  #    Project.find(@child_child_project).ancestry == @root_project
-  #  end
-
-  #  it "should not be delete child of the child" do
-  #    Project.where(:id => @child_child_project).count.should == 1
-  #  end
-  #end
 end