diff --git a/htdocs/eventorganization/class/conferenceorbooth.class.php b/htdocs/eventorganization/class/conferenceorbooth.class.php
index 2defceeee72..12245ab9643 100644
--- a/htdocs/eventorganization/class/conferenceorbooth.class.php
+++ b/htdocs/eventorganization/class/conferenceorbooth.class.php
@@ -291,7 +291,7 @@ class ConferenceOrBooth extends ActionComm
 
 		$link_subscription = $dolibarr_main_url_root.'/public/eventorganization/attendee_new.php?id='.urlencode((string) ($id)).'&type=conf';
 
-		$encodedsecurekey = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY').'conferenceorbooth'.$id, '2');
+		$encodedsecurekey = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY').'conferenceorbooth'.((int) $id), 'md5');
 		$link_subscription .= '&securekey='.urlencode($encodedsecurekey);
 
 		/*$this->fields['pubregister'] = array('type'=>'url', 'label'=>$langs->trans("PublicAttendeeSubscriptionPage"), 'enabled'=>'1', 'position'=>72, 'notnull'=>0, 'visible'=>1);
diff --git a/htdocs/public/eventorganization/attendee_new.php b/htdocs/public/eventorganization/attendee_new.php
index d3099bbc36b..70a22f644e4 100644
--- a/htdocs/public/eventorganization/attendee_new.php
+++ b/htdocs/public/eventorganization/attendee_new.php
@@ -362,7 +362,7 @@ if (empty($reshook) && $action == 'add' && (!empty($conference->id) && $conferen
 
 		// If the registration has already been paid for this attendee
 		if (!empty($confattendee->date_subscription) && !empty($confattendee->amount)) {
-			$securekeyurl = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.$id, 'master');
+			$securekeyurl = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.((int) $id), 'md5');
 			$redirection = $dolibarr_main_url_root.'/public/eventorganization/subscriptionok.php?id='.((int) $id).'&securekey='.urlencode($securekeyurl);
 
 			$mesg = $langs->trans("RegistrationAndPaymentWereAlreadyRecorded", $email);
@@ -698,7 +698,7 @@ if (empty($reshook) && $action == 'add' && (!empty($conference->id) && $conferen
 				dol_syslog("Failed to send EMail to ".$sendto, LOG_ERR, 0, '_payment');
 			}
 
-			$securekeyurl = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.$id, '2');
+			$securekeyurl = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.((int) $id), 'md5');
 			$redirection = $dolibarr_main_url_root.'/public/eventorganization/subscriptionok.php?id='.((int) $id).'&securekey='.urlencode($securekeyurl);
 
 			header("Location: ".$redirection);
diff --git a/htdocs/public/eventorganization/subscriptionok.php b/htdocs/public/eventorganization/subscriptionok.php
index a1fe0017a3a..5b3be5058eb 100644
--- a/htdocs/public/eventorganization/subscriptionok.php
+++ b/htdocs/public/eventorganization/subscriptionok.php
@@ -81,7 +81,7 @@ $error = 0;
 // Security check
 $id = GETPOSTINT("id");
 $securekeyreceived = GETPOST("securekey");
-$securekeytocompare = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.$id, '2');
+$securekeytocompare = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.((int) $id), 'md5');
 
 if ($securekeyreceived != $securekeytocompare) {
 	print $langs->trans('MissingOrBadSecureKey');
diff --git a/htdocs/public/project/suggestbooth.php b/htdocs/public/project/suggestbooth.php
index 949bb286c48..9247e6d9159 100644
--- a/htdocs/public/project/suggestbooth.php
+++ b/htdocs/public/project/suggestbooth.php
@@ -94,7 +94,7 @@ if ($resultproject < 0) {
 
 // Security check
 $securekeyreceived = GETPOST('securekey', 'alpha');
-$securekeytocompare = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.$id, 'md5');
+$securekeytocompare = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.((int) $id), 'md5');
 
 if ($securekeytocompare != $securekeyreceived) {
 	print $langs->trans('MissingOrBadSecureKey');
@@ -550,7 +550,7 @@ if (empty($reshook) && $action == 'add') {	// Test on permission not required he
 			dol_syslog("Failed to send EMail to ".$sendto, LOG_ERR, 0, '_payment');
 		}
 
-		$securekeyurl = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.$id, '2');
+		$securekeyurl = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.((int) $id), 'md5');
 		$redirection = $dolibarr_main_url_root.'/public/eventorganization/subscriptionok.php?id='.$id.'&securekey='.$securekeyurl;
 		header("Location: ".$redirection);
 		exit;
diff --git a/htdocs/public/project/suggestconference.php b/htdocs/public/project/suggestconference.php
index fcc9dfc6025..e3ddf9c4260 100644
--- a/htdocs/public/project/suggestconference.php
+++ b/htdocs/public/project/suggestconference.php
@@ -94,7 +94,7 @@ if ($resultproject < 0) {
 
 // Security check
 $securekeyreceived = GETPOST('securekey', 'alpha');
-$securekeytocompare = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.$id, 'md5');
+$securekeytocompare = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.((int) $id), 'md5');
 
 if ($securekeytocompare != $securekeyreceived) {
 	print $langs->trans('MissingOrBadSecureKey');
@@ -486,7 +486,7 @@ if (empty($reshook) && $action == 'add') {	// Test on permission not required he
 
 	if (!$error) {
 		$db->commit();
-		$securekeyurl = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.$id, '2');
+		$securekeyurl = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.((int) $id), 'md5');
 		$redirection = $dolibarr_main_url_root.'/public/eventorganization/subscriptionok.php?id='.((int) $id).'&securekey='.urlencode($securekeyurl);
 		header("Location: ".$redirection);
 		exit;
diff --git a/htdocs/public/project/viewandvote.php b/htdocs/public/project/viewandvote.php
index 5b9404e2515..250a7b4c5df 100644
--- a/htdocs/public/project/viewandvote.php
+++ b/htdocs/public/project/viewandvote.php
@@ -81,7 +81,7 @@ $error = 0;
 $action = GETPOST('action', 'aZ09');
 $id = GETPOST('id');
 $securekeyreceived = GETPOST("securekey");
-$securekeytocompare = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.$id, 'md5');
+$securekeytocompare = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'conferenceorbooth'.((int) $id), 'md5');
 
 if ($securekeytocompare != $securekeyreceived) {
 	print $langs->trans('MissingOrBadSecureKey');
@@ -173,10 +173,10 @@ while ($i < $db->num_rows($result)) {
 */
 
 // Get vote result
-$idvote = GETPOST("vote");
-$hashedvote = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY') . 'vote'.$idvote);
+$idvote = GETPOSTINT("vote");
+$hashedvote = dol_hash(getDolGlobalString('EVENTORGANIZATION_SECUREKEY').'vote'.$idvote);
 
-if (strlen($idvote)) {
+if ($idvote > 0) {
 	if (in_array($hashedvote, $listofvotes)) {
 		// Has already voted
 		$votestatus = 'ko';