diff --git a/doc/conf/LSattribute/check-data.docbook b/doc/conf/LSattribute/check-data.docbook
index 6d7e5891..041906b3 100644
--- a/doc/conf/LSattribute/check-data.docbook
+++ b/doc/conf/LSattribute/check-data.docbook
@@ -64,6 +64,7 @@ règles.</para>
 &conf-LSattribute-check-data-rangelength;
 &conf-LSattribute-check-data-regex;
 &conf-LSattribute-check-data-required;
+&conf-LSattribute-check-data-ssh_pub_key;
 &conf-LSattribute-check-data-telephonenumber;
 
 </sect3>
diff --git a/doc/conf/LSattribute/check_data/LSattribute-check_data.entities.xml b/doc/conf/LSattribute/check_data/LSattribute-check_data.entities.xml
index 4ac461fd..e13378e8 100644
--- a/doc/conf/LSattribute/check_data/LSattribute-check_data.entities.xml
+++ b/doc/conf/LSattribute/check_data/LSattribute-check_data.entities.xml
@@ -19,4 +19,5 @@
 <!ENTITY conf-LSattribute-check-data-rangelength SYSTEM "rangelength.docbook">
 <!ENTITY conf-LSattribute-check-data-regex SYSTEM "regex.docbook">
 <!ENTITY conf-LSattribute-check-data-required SYSTEM "required.docbook">
+<!ENTITY conf-LSattribute-check-data-ssh_pub_key SYSTEM "ssh_pub_key.docbook">
 <!ENTITY conf-LSattribute-check-data-telephonenumber SYSTEM "telephonenumber.docbook">
diff --git a/doc/conf/LSattribute/check_data/ssh_pub_key.docbook b/doc/conf/LSattribute/check_data/ssh_pub_key.docbook
new file mode 100644
index 00000000..dfb019d2
--- /dev/null
+++ b/doc/conf/LSattribute/check_data/ssh_pub_key.docbook
@@ -0,0 +1,10 @@
+<sect4 id="config-LSattribute-check-data-ssh_pub_key">
+  <title>ssh_pub_key</title>
+  <para>Cette règle vérifie que la valeur est une clé publique SSH.</para>
+  <para>Cette vérification utilise tout d'abord une expression régulière
+  pour valider la forme syntaxique de la clé publique
+  (<literal>ssh-[type] [clé au format base64] [commentaire]</literal>) puis
+  tente de décoder la partie en base64 de la clé pour vérifier qu'il s'agit
+  bien d'une chaine de caractères dans laquelle on retrouve bien le type de
+  la clé (<literal>ssh-[type]</literal>).</para>
+</sect4>
diff --git a/public_html/includes/class/class.LSformRule_ssh_pub_key.php b/public_html/includes/class/class.LSformRule_ssh_pub_key.php
new file mode 100644
index 00000000..1a93ec53
--- /dev/null
+++ b/public_html/includes/class/class.LSformRule_ssh_pub_key.php
@@ -0,0 +1,48 @@
+<?php
+/*******************************************************************************
+ * Copyright (C) 2007 Easter-eggs
+ * http://ldapsaisie.labs.libre-entreprise.org
+ *
+ * Author: See AUTHORS file in top-level directory.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+******************************************************************************/
+
+/**
+ * LSformRule to check SSH public key
+ *
+ * @author Benjamin Renard <brenard@easter-eggs.com>
+ */
+class LSformRule_ssh_pub_key extends LSformRule {
+  
+  /**
+   * Validate SSH public key value
+   *
+   * @param string $values The value to validate
+   * @param array $options Validation options
+   * @param object $formElement The related formElement object
+   *
+   * @return boolean true if the value is valide, false if not
+   */ 
+  function validate($value,$options,$formElement) {
+    if (preg_match('/^(ssh-[a-z0-9]+) +([^ ]+) +(.*)$/', $value, $m)) {
+      $data=@base64_decode($m[2]);
+      if (is_string($data) && strpos($data, $m[1]))
+        return true;
+    }
+    return false;
+  }
+
+}