What is a digital signature and how is it different from a traditional signature. What is the difference between digital signature and authentication.
1. Concept:
(1) A digital signature is a digital string that can only be generated by the sender of the information and cannot be forged by others.
This string is also a valid proof of the authenticity of the information sent by the sender.
(2) Digital signature is the application of asymmetric key encryption technology and digital digest technology.
Function: Ensure the integrity of information transmission, authenticate the sender, and prevent denials in transactions.
2. The difference between digital signature and traditional signature:
(1) Compared with the physical signature on the traditional paper, the digital signature uses the technology in the field of public key encryption. A set of digital signatures, usually defining two complementary operations,
One for signing and the other for verification.
3. What is the difference between digital signature and authentication
| digital signature | The algorithm is public and the private key is kept secret. author's identity can be determined |
| Authentication | Usually refers to the certification method given to a third-party certification body, and a trusted third-party provides certification services |