As a genuine economic revolution, electronic commerce has facilitated commercial communication and interaction worldwide. It has also generated significant benefits in trade and contributed to economic development. Transactions conducted in this environment, however, require a form of signature suited to modern electronic dealings. The traditional concept of a handwritten signature does not readily fit this setting. This development led most international and national legal systems, including Algeria, to regulate electronic signatures. Legislators defined the concept and established rules governing its use. Their aim was to provide a means of proving legal transactions concluded over the Internet without relying on conventional paper documents. This study therefore examines the evidentiary value of the electronic signature.