An electronic signature is an electronic code that can be used to verify the signature or identity of a sender online.

Any electronic technical means that can prove the identity of the party involved in electronic communications and prove the party’s recognition of the content of the document can be called an electronic signature. An electronic signature is not a digital image of a written signature. It is actually an electronic code that allows the recipient to easily verify the sender's identity and signature online.

It can also verify whether the original text of the file has changed during the transmission process. If someone wants to send an important document to someone out of town via the Internet, both the recipient and the sender need to first apply for an electronic license from a licensing authority CA (GlobalSign). This encrypted certificate includes the applicant's online public password, which is the "public password" and is used for document verification.

Introduction to electronic signature

The sender uses the recipient's public key issued by the CA to encrypt the file and signs the file with its own key. When the recipient receives the file, he first uses the sender's public key to parse the signature to prove that the file is indeed sent by the sender, and then uses his own private key to decrypt the file and read it.

Electronic signature is a general term for modern authentication technology. The United States "Uniform Electronic Transactions Act" stipulates that "electronic signature" generally refers to electronic sounds, symbols or programs that are associated with electronic records or are logically associated with them. , and the electronic sound, symbol or process is entered into or adopted by a person for the purpose of signing an electronic record. Electronic signature is the general concept of modern authentication technology, and it is an important means of ensuring the security of e-commerce.