source: Each party will authenticate Documents using a digital signature or User ID, as specified by Buyer, and will maintain security procedures to prevent its unauthorized use.
target: Each party will authenticate Documents. They will use a digital signature or User ID, as specified by Buyer. Each party will maintain security procedures. They will prevent its unauthorized use.
references: Each party will authenticate Documents. They will use a digital signature or User ID, as specified by Buyer. Each party will maintain security procedures. They will prevent its unauthorized use.