Generally speaking, data with electronic signature will be more secure than data without electronic signature, because electronic signature is a signature specially designed to prevent tamper from stealing data information.

Electronic signature (also known as public key digital signature and electronic signature) is an ordinary physical signature, similar to the signature written on paper, but it is realized by using the technology in the field of public key encryption, which is used to identify digital information.

Generally speaking, electronic signature is an electronic signature of electronic documents through cryptographic technology, which is not a digital visualization of written signature, but similar to handwritten signature or seal, and can also be said to be an electronic seal. The purpose of electronic signature is to sign the electronic version of Mid-Autumn Festival greeting cards, invitations and construction contracts.

A set of digital signatures usually defines two complementary operations, one for signing and the other for verification. Electronic signature is a digital string, which can only be generated by the sender of information, and others cannot forge it. This number string is also an effective proof of the authenticity of the information sent by the information sender.

Digital signature is the application of asymmetric key encryption technology and digital digest technology. The vendors providing electronic signatures are third-party electronic authentication service providers such as bjca.