The issuance of digital certificates is a process in which users send their own keys and public keys and their own subject information to a verification center for verification. After verification, the verification center will send the corresponding digital certificate to the applicant. The improved digital certificate contains basic user information and public key information, some of which will be accompanied by information signed by the certification center. After obtaining the digital certificate, users can use the digital certificate to achieve some activities they want to achieve. But each digital certificate is different, and the credibility of each certificate is also different. Therefore, the digital certificates obtained by the applicants are all positive.
Why use digital certificates?
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. For example, when we shop on various e-commerce platforms, we must install digital certificates on the computer to ensure the safety of funds.
Safe. When a user applies for a certificate, there will be two different certificates, which are used to work on the computer and verify the information interaction of the user. If the computers used are different, the user needs to re-obtain the certificate used to verify the computers used by the user, but can't make a backup, so that even if others steal the certificate, they can't obtain the user's account information, which ensures the account information.
Make love. Digital certificates give users corresponding access rights according to their identities. If you log in to another computer, but the user has no certificate backup and can't operate, he can only view the account information. A digital certificate is like a "key". The so-called "one key can only open one lock" is the embodiment of his nature.
Convenient. Users can immediately apply for, open and use digital certificates, and can choose the corresponding digital certificate protection technology according to users' needs. Users don't need to master the encryption technology or principle, but directly carry out security protection through digital certificates, which is very convenient and efficient. Digital certificates are issued by CA Center, which is an authoritative and highly dependent third party. Its qualification certificate is issued by the state, which can effectively guarantee the security of network data information and make the data information office in the hands of the state. When users browse network data or conduct online transactions, digital certificates can ensure the security of information transmission and transactions.
Digital signature technology
Digital signature ensures the integrity of information transmission, ensures the identity authentication of the sender, and prevents denial in the transaction.
Digital signature has two functions:
One is to make sure that the message is actually sent by the sender's signature, because it is impossible for others to forge the sender's signature.
Secondly, the digital signature can determine the integrity of the message. Because the characteristic of digital signature is that it represents the characteristics of the file, if the file changes, the value of the digital abstract will also change. Different files will get different digital summaries.
The above is the related content of digital certificate. For more information, please pay attention to other related articles of Shanghai CA Center! Established in 1998, Shanghai CA Center is a pilot approved by the Central Cryptography Leading Group, providing legal and compliant third-party electronic authentication, digital identity related products and integrated implementation services for the government, enterprises, institutions and individuals!