From the above definition, any electronic technical means that can prove the identity of the parties and approve the contents of documents in electronic communication can be called electronic signature, which is a general concept of modern authentication technology and an important guarantee for the security of e-commerce.
In short, the so-called electronic signature refers to the data contained in the data message in electronic form and accompanied by data used to identify the identity of the signer and show that the signer approves its content. 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.
I hope it will help you. If you don't understand, you can ask me.
You can read an encyclopedia to find out.
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The electronic signature and seal of Beijing Anruan Tiandi Technology Co., Ltd. are recommended. You can also have a look.