Legal and safe. In the exchange certificate electronic signature loan, the borrower needs to use an electronic signature to sign the loan agreement to ensure the authenticity and legality of the loan agreement and protect the interests of both parties. When issuing a paper bank acceptance bill, the electronic signature uses cryptography technology to The electronic signature of a document is not a digital image of a written signature. It can verify the identity and intention of the signer, ensure the authenticity and integrity of the signed content, and avoid some problems caused by irregular sealing.