diff --git a/.travis.yml b/.travis.yml
index a4e1317..03e9bad 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,7 +29,9 @@ matrix:
   - name: "GeoNetwork 3.8.2"
     os: linux
     services: docker
-    apt_packages: libxml2-dev
+    apt_packages:
+      - libxml2-dev
+      - libsodium-dev
     env:
     - GN_VERSION=3.8.2
     before_install:
@@ -47,7 +49,9 @@ matrix:
   - name: "GeoNetwork 3.6.0"
     os: linux
     services: docker
-    apt_packages: libxml2-dev
+    apt_packages:
+      - libxml2-dev
+      - libsodium-dev
     env:
     - GN_VERSION=3.6.0
     before_install:
@@ -65,7 +69,9 @@ matrix:
   - name: "GeoNetwork 3.4.4"
     os: linux
     services: docker
-    apt_packages: libxml2-dev
+    apt_packages:
+      - libxml2-dev
+      - libsodium-dev
     env:
     - GN_VERSION=3.4.4
     before_install:
@@ -83,7 +89,9 @@ matrix:
   - name: "GeoNetwork 3.2.2"
     os: linux
     services: docker
-    apt_packages: libxml2-dev
+    apt_packages:
+      - libxml2-dev
+      - libsodium-dev
     env:
     - GN_VERSION=3.2.2
     before_install:
@@ -101,7 +109,9 @@ matrix:
   - name: "GeoNetwork 3.0.5"
     os: linux
     services: docker
-    apt_packages: libxml2-dev
+    apt_packages:
+      - libxml2-dev
+      - libsodium-dev
     env:
     - GN_VERSION=3.0.5
     before_install:
@@ -115,7 +125,9 @@ matrix:
   - name: "GeoNetwork 2.6.4"
     os: linux
     services: docker
-    apt_packages: libxml2-dev
+    apt_packages:
+      - libxml2-dev
+      - libsodium-dev
     env:
     - GN_VERSION=2.6.4
     before_install:
diff --git a/DESCRIPTION b/DESCRIPTION
index fde1c5f..77ec973 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,16 +1,17 @@
 Package: geonapi
 Type: Package
 Title: 'GeoNetwork' API R Interface
-Version: 0.3-1
-Date: 2020-01-20
+Version: 0.4
+Date: 2020-08-05
 Authors@R: c(person("Emmanuel", "Blondel", role = c("aut", "cre"), email = "emmanuel.blondel1@gmail.com", comment = c(ORCID = "0000-0002-5870-5762")))
 Maintainer: Emmanuel Blondel <emmanuel.blondel1@gmail.com>
 Description: Provides an R interface to the 'GeoNetwork' API (<https://geonetwork-opensource.org/#api>) allowing to upload and publish metadata in a 'GeoNetwork' web-application and exposte it to OGC CSW.
-Depends: R (>= 3.1.0), geometa
+Depends: R (>= 3.1.0), geometa, keyring
 Imports: R6, openssl, httr, XML
 Suggests: testthat, roxygen2
 License: MIT + file LICENSE
 URL: https://github.com/eblondel/geonapi/wiki, https://geonetwork-opensource.org
 BugReports: https://github.com/eblondel/geonapi/issues
 LazyLoad: yes
-RoxygenNote: 6.1.1
+RoxygenNote: 7.1.0
+Roxygen: list(r6 = FALSE)
diff --git a/NAMESPACE b/NAMESPACE
index 169648c..82ca990 100644
--- a/NAMESPACE
+++ b/NAMESPACE
@@ -9,5 +9,6 @@ export(GNVersion)
 import(XML)
 import(geometa)
 import(httr)
+import(keyring)
 importFrom(R6,R6Class)
 importFrom(openssl,base64_encode)
diff --git a/R/GNManager.R b/R/GNManager.R
index 9057380..ec98517 100644
--- a/R/GNManager.R
+++ b/R/GNManager.R
@@ -6,6 +6,9 @@
 #' @import httr
 #' @import XML
 #' @importFrom openssl base64_encode
+#' @import keyring
+#' @import geometa
+#' 
 #' @export
 #' @keywords geonetwork rest api
 #' @return Object of \code{\link{R6Class}} with methods for communication with
@@ -55,9 +58,18 @@
 #'    This methods attempts a connection to GeoNetwork REST API. User internally
 #'    during initialization of \code{GNManager}.
 #'  }
+#'  \item{\code{getCookies()}}{
+#'    Get user session cookies
+#'  }
+#'  \item{\code{getToken()}}{
+#'    Get user session token
+#'  }
 #'  \item{\code{getClassName()}}{
 #'    Retrieves the name of the class instance
 #'  }
+#'  \item{\code{getGroups()}}{
+#'    Retrives the list of user groups available in Geonetwork
+#'  }
 #'  \item{\code{insertMetadata(xml, file, geometa, group, category, stylesheet, validate, geometa_validate, geometa_inspire)}}{
 #'    Inserts a metadata by file, XML object or \pkg{geometa} object of class
 #'    \code{ISOMetadata} or \code{ISOFeatureCatalogue}. If successful, returns the Geonetwork
@@ -108,8 +120,8 @@ GNManager <- R6Class("GNManager",
   
   #TODO provider specific formatter to prevent these fields to be printable
   private = list(
+    keyring_service = NULL,
     user = NULL,
-    pwd = NULL,
     token = NULL,
     cookies = NULL,
     
@@ -194,7 +206,7 @@ GNManager <- R6Class("GNManager",
       
       #baseUrl
       self$url = sprintf("%s/srv/%s", url, self$lang)
-      
+      private$keyring_service <- paste0("geonapi@", url)
       
       #try to login
       if(!is.null(user) && !is.null(pwd)){        
@@ -245,7 +257,7 @@ GNManager <- R6Class("GNManager",
       }
       
       private$user <- user
-      private$pwd <- pwd
+      keyring::key_set_with_value(private$keyring_service, username = user, password = pwd)
       
       req_cookies <- cookies(req)
       cookies <- as.list(req_cookies$value)
@@ -294,10 +306,6 @@ GNManager <- R6Class("GNManager",
       return(private$token)
     },
     
-    getUserPwd = function(){
-      return(paste0(private$user,":", private$pwd))
-    },
-
     #getClassName
     #---------------------------------------------------------------------------
     getClassName = function(){
@@ -313,7 +321,8 @@ GNManager <- R6Class("GNManager",
         url = self$getUrl(),
         path = "/xml.info",
         token = private$token, cookies = private$cookies,
-        user = private$user, pwd = private$pwd,
+        user = private$user, 
+        pwd = keyring::key_get(private$keyring_service, username = private$user),
         query = list(type = "groups"),
         verbose = self$verbose.debug
       )
@@ -379,7 +388,8 @@ GNManager <- R6Class("GNManager",
         url = self$getUrl(),
         path = "/xml.metadata.insert",
         token = private$token, cookies = private$cookies,
-        user = private$user, pwd = private$pwd,
+        user = private$user, 
+        pwd = keyring::key_get(private$keyring_service, username = private$user),
         content = gnRequest$encode(),
         contentType = "text/xml",
         verbose = self$verbose.debug
@@ -421,7 +431,8 @@ GNManager <- R6Class("GNManager",
         url = self$getUrl(),
         path = ifelse(self$version$value$major < 3, "/metadata.admin", "md.privileges.update"),
         token = private$token, cookies = private$cookies,
-        user = private$user, pwd = private$pwd,
+        user = private$user,
+        pwd = keyring::key_get(private$keyring_service, username = private$user),
         query = queryParams,
         verbose = self$verbose.debug
       )
@@ -460,7 +471,8 @@ GNManager <- R6Class("GNManager",
         url = self$getUrl(),
         path = "/xml.metadata.get",
         token = private$token, cookies = private$cookies,
-        user = private$user, pwd = private$pwd,
+        user = private$user,
+        pwd = keyring::key_get(private$keyring_service, username = private$user),
         content = gnRequest$encode(),
         contentType = "text/xml",
         verbose = self$verbose.debug
@@ -566,7 +578,8 @@ GNManager <- R6Class("GNManager",
         url = self$getUrl(),
         path = "/metadata.update.finish",
         token = private$token, cookies = private$cookies,
-        user = private$user, pwd = private$pwd,
+        user = private$user,
+        pwd = keyring::key_get(private$keyring_service, username = private$user),
         content = gnRequest$encode(),
         contentType = "text/xml",
         verbose = self$verbose.debug
@@ -593,7 +606,8 @@ GNManager <- R6Class("GNManager",
         url = self$getUrl(),
         path = "/xml.metadata.delete",
         token = private$token, cookies = private$cookies,
-        user = private$user, pwd = private$pwd,
+        user = private$user,
+        pwd = keyring::key_get(private$keyring_service, username = private$user),
         content = gnRequest$encode(),
         contentType = "text/xml",
         verbose = self$verbose.debug
@@ -625,7 +639,8 @@ GNManager <- R6Class("GNManager",
         url = self$getUrl(),
         path = "/xml.metadata.select",
         token = private$token, cookies = private$cookies,
-        user = private$user, pwd = private$pwd,
+        user = private$user,
+        pwd = keyring::key_get(private$keyring_service, username = private$user),
         content = gnSelectRequest$encode(),
         contentType = "text/xml",
         verbose = self$verbose.debug
@@ -636,7 +651,8 @@ GNManager <- R6Class("GNManager",
         url = self$getUrl(),
         path = "/xml.metadata.batch.delete",
         token = private$token, cookies = private$cookies,
-        user = private$user, pwd = private$pwd,
+        user = private$user,
+        pwd = keyring::key_get(private$keyring_service, username = private$user),
         content = gnDeleteRequest$encode(),
         contentType = "text/xml",
         verbose = self$verbose.debug
diff --git a/R/geonapi.R b/R/geonapi.R
index b89f0e8..2ece490 100644
--- a/R/geonapi.R
+++ b/R/geonapi.R
@@ -3,8 +3,6 @@
 #' @aliases geonapi
 #' @docType package
 #' 
-#' @import geometa
-#' 
 #' @title 'GeoNetwork' API R Interface
 #' @description Provides an R interface to the 'GeoNetwork' API (<https://geonetwork-opensource.org/#api>)
 #' allowing to upload and publish metadata in a 'GeoNetwork' web-application and exposte it to OGC CSW 
diff --git a/README.md b/README.md
index 2dd5b6c..60e0372 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 
 [![Build Status](https://travis-ci.org/eblondel/geonapi.svg?branch=master)](https://travis-ci.org/eblondel/geonapi)
 [![codecov.io](http://codecov.io/github/eblondel/geonapi/coverage.svg?branch=master)](http://codecov.io/github/eblondel/geonapi?branch=master)
-[![Github_Status_Badge](https://img.shields.io/badge/Github-0.3--1-blue.svg)](https://github.com/eblondel/geonapi)
+[![Github_Status_Badge](https://img.shields.io/badge/Github-0.4-blue.svg)](https://github.com/eblondel/geonapi)
 [![CRAN_Status_Badge](http://www.r-pkg.org/badges/version/geonapi)](https://cran.r-project.org/package=geonapi)
 [![CRAN checks](https://cranchecks.info/badges/worst/geonapi)](https://cran.r-project.org/web/checks/check_results_geonapi.html)
 [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.1345012.svg)](https://doi.org/10.5281/zenodo.1345012)
diff --git a/man/GNManager.Rd b/man/GNManager.Rd
index 4d9a161..95f1747 100644
--- a/man/GNManager.Rd
+++ b/man/GNManager.Rd
@@ -4,9 +4,8 @@
 \name{GNManager}
 \alias{GNManager}
 \title{GeoNetwork REST API Manager}
-\format{\code{\link{R6Class}} object.}
-\usage{
-GNManager
+\format{
+\code{\link{R6Class}} object.
 }
 \value{
 Object of \code{\link{R6Class}} with methods for communication with
@@ -63,9 +62,18 @@ GeoNetwork REST API Manager
    This methods attempts a connection to GeoNetwork REST API. User internally
    during initialization of \code{GNManager}.
  }
+ \item{\code{getCookies()}}{
+   Get user session cookies
+ }
+ \item{\code{getToken()}}{
+   Get user session token
+ }
  \item{\code{getClassName()}}{
    Retrieves the name of the class instance
  }
+ \item{\code{getGroups()}}{
+   Retrives the list of user groups available in Geonetwork
+ }
  \item{\code{insertMetadata(xml, file, geometa, group, category, stylesheet, validate, geometa_validate, geometa_inspire)}}{
    Inserts a metadata by file, XML object or \pkg{geometa} object of class
    \code{ISOMetadata} or \code{ISOFeatureCatalogue}. If successful, returns the Geonetwork
diff --git a/man/GNPrivConfiguration.Rd b/man/GNPrivConfiguration.Rd
index ae4af0c..59cfe1a 100644
--- a/man/GNPrivConfiguration.Rd
+++ b/man/GNPrivConfiguration.Rd
@@ -5,11 +5,10 @@
 \alias{GNPrivConfiguration}
 \alias{GNPriv}
 \title{A GeoNetwork privilege configuration}
-\format{\code{\link{R6Class}} object.}
-\usage{
-GNPriv
+\format{
+\code{\link{R6Class}} object.
 
-GNPrivConfiguration
+\code{\link{R6Class}} object.
 }
 \value{
 Object of \code{\link{R6Class}} for modelling a GeoNetwork Privilege configuration
diff --git a/man/GNRESTRequest.Rd b/man/GNRESTRequest.Rd
index d1419d7..21cb4b4 100644
--- a/man/GNRESTRequest.Rd
+++ b/man/GNRESTRequest.Rd
@@ -4,9 +4,8 @@
 \name{GNRESTRequest}
 \alias{GNRESTRequest}
 \title{GeoNetwork REST API REST Request}
-\format{\code{\link{R6Class}} object.}
-\usage{
-GNRESTRequest
+\format{
+\code{\link{R6Class}} object.
 }
 \value{
 Object of \code{\link{R6Class}} for modelling a GeoNetwork REST request
diff --git a/man/GNUtils.Rd b/man/GNUtils.Rd
index 9ba71e2..00bf1d6 100644
--- a/man/GNUtils.Rd
+++ b/man/GNUtils.Rd
@@ -4,9 +4,8 @@
 \name{GNUtils}
 \alias{GNUtils}
 \title{GeoNetwork REST API Manager Utils}
-\format{\code{\link{R6Class}} object.}
-\usage{
-GNUtils
+\format{
+\code{\link{R6Class}} object.
 }
 \value{
 Object of \code{\link{R6Class}} with static util methods for communication
diff --git a/man/GNVersion.Rd b/man/GNVersion.Rd
index 0be738f..cd6d640 100644
--- a/man/GNVersion.Rd
+++ b/man/GNVersion.Rd
@@ -4,9 +4,8 @@
 \name{GNVersion}
 \alias{GNVersion}
 \title{A GeoNetwork version}
-\format{\code{\link{R6Class}} object.}
-\usage{
-GNVersion
+\format{
+\code{\link{R6Class}} object.
 }
 \value{
 Object of \code{\link{R6Class}} for modelling a GeoNetwork version