diff --git a/roles/ovzdb/templates/openvz-diff-backups.conf.j2 b/roles/ovzdb/templates/openvz-diff-backups.conf.j2
index 375185e..83aa069 100644
--- a/roles/ovzdb/templates/openvz-diff-backups.conf.j2
+++ b/roles/ovzdb/templates/openvz-diff-backups.conf.j2
@@ -11,12 +11,16 @@ SERVER_TMPFS_SIZE="auto"
 BACKUP_SSH_PATH="root@{{ backup_server }}:{{ backup_dir }}"
 #compatibilite ovzdb > 0.9.3
 MASTER_SSH_PATH="root@{{ backup_server }}:{{ backup_dir }}"
+#changement du cypher SSH vers chacha pour plus de secu
+MASTER_SSH_OPTIONS="ssh -p 22 -c chacha20-poly1305@openssh.com -o Compression=no -o ConnectTimeout=60 -o ControlMaster=auto -o ControlPath=/root/openvz-diff-backups_%r@%h:%p -o ControlPersist=3600 -o ForwardX11=no -o PasswordAuthentication=no -o PreferredAuthentications=publickey -o StrictHostKeyChecking=ask" 
 BACKUP_SKIP_STOPPED_CONTAINERS="all"
 UPLOAD_SKIP_HOSTS=other
 #compatibilite ovzdb < 0.9.2
 UPLOAD_SSH_PATH="root@{{ upload_server }}:{{ upload_dir }}"
 #compatibilite ovzdb > 0.9.3
 REMOTE_SSH_PATH="root@{{ upload_server }}:{{ upload_dir }}"
+#Changement du cyper ssh pour plus de secu
+REMOTE_SSH_OPTIONS="ssh -p 22 -c chacha20-poly1305@openssh.com -o Compression=no -o ConnectTimeout=60 -o ControlMaster=auto -o ControlPath=/root/openvz-diff-backups_%r@%h:%p -o ControlPersist=3600 -o ForwardX11=no -o PasswordAuthentication=no -o PreferredAuthentications=publickey -o StrictHostKeyChecking=ask"
 #possibilite de restaurer des backups de n'importe quel host
 RESTORE_SKIP_HOSTS=""
 #decommenter pour supprimer les backup de n'importe quel host