The word digital certificate is not original in China, but comes from the translation of English digital certificate. Digital certificate is essentially an electronic document, an authoritative and fair certificate issued by the electronic commerce certification center (hereinafter referred to as CA center), which has an important influence on electronic commerce activities.
Extended data:
Application of certificate:
1, secure email
Using digital certificate in e-mail can construct a secure e-mail certificate, and the main user encrypts the transmission of e-mail to protect the security of e-mail during transmission and reception. A secure e-mail certificate mainly includes the signature of the certificate holder, the e-mail address and the public key of the CA organization.
2, security terminal protection
With the development of computer network technology, e-commerce is developing faster and faster, and it is more and more widely used in people's life and production, and the security of user terminals and data is also paid more and more attention. In order to avoid the damage or leakage of terminal data information, digital certificate, as an encryption technology, can be used for terminal protection.
3. code signing protection
Network information promotion is convenient and economical for many users, but it is uncertain about the security of software. For example, when users share software, there are many unsafe factors in the process of receiving and using the software. Even if the software supplier can guarantee the security of the software itself, it can't resist the adverse effects caused by the unsafe factors of pirated software and the network itself.
4. Trusted website services
With the development of computer network technology, there are more and more websites in China, including malicious websites, phishing websites and fake websites, which makes it more and more difficult for users to identify these websites. If they are not careful, they will reveal their own data and information, which will seriously affect the security of the network.
When users have doubts about the website they use and are not sure whether it has been tampered with or invaded, the technology of digital certificate can be used. Through digital certificate technology, uncertain websites can be verified and checked first, which increases the probability of using secure websites and avoids the losses caused by malicious websites, phishing websites and fake websites.
5. Identity authorization management
Authorization management system is an important content of information system security, which provides users and programs with corresponding authorization services, authorized access and application methods. Digital certificates can only be applied after identity authorization management of computer networks.
Therefore, it is necessary to ensure the security of identity authorization management tools. When both sides of the system reach an agreement, the work of the identity authorization system can be carried out. At the same time, the correct use of digital certificates, reasonable authorization and user authentication of the system can effectively protect the security of the identity authorization management system.
Baidu Encyclopedia-Digital Certificate