Simply put, electronic signature is an electronic signature realized by technical means, not a digital image with a written signature. The legal definition of electronic signature is that a reliable electronic signature has the same legal effect as a handwritten signature or seal. According to the provisions of the Electronic Signature Law, the main functions of electronic signature are: to clarify the identity of the signer of an electronic contract and to identify its authenticity. It shows that the content of the contract approved by the contracting party can be found once it is tampered with. The whole process of signing the contract will be recorded, and the electronic signature will be responsible for the integrity and correctness of the contract. Aegis electronic contract signing platform relies on national laws, follows the provisions of Contract Law and Electronic Signature Law, and uses reliable electronic signatures to ensure its legal effect from three aspects.

Digital certificates issued by CA Certification Center, a national authority, are used and checked and compared through the certification system of the Ministry of Public Security to ensure the authenticity and validity of the identities of both signatories. It can be seen that the role of electronic signature is mainly reflected in two aspects. One is to confirm the identity of the signer like the traditional handwritten signature or seal, and the other is to ensure the safety and compliance in the process of signing the contract. Electronic contracts with electronic signatures effectively avoid the risks of counterfeiting and forgery caused by handwritten signatures or seals. At the same time, compared with paper contract, electronic contract improves the signing efficiency, reduces the signing cost and paper cost, and plays an environmental protection role.