The CA also owns a certificate (containing public and private keys). Public users on the Internet trust the CA by verifying the CA's signature. Anyone can obtain the CA's certificate (including the public key) to verify the certificate issued by it.

Digital certificates provide electronic authentication for secure communication between both parties. Digital certificates are used to achieve identification and encryption of electronic information on the Internet, company intranet, or extranet. The digital certificate contains the identification information of the owner of the key pair (public key and private key), and the identity of the certificate holder is authenticated by verifying the authenticity of the identification information.

On April 1, 2005, the "Electronic Signature Law of the People's Republic of China" was officially implemented, authorizing the information industry authorities to implement administrative licensing and supervision of electronic certification service providers. By the end of 2005, 15 electronic certification (CA) agencies in my country had obtained electronic certification service licenses. Up to now, the number of CA institutions that have obtained electronic certification service licenses in my country has increased to 37, distributed in 23 provinces, municipalities, and autonomous regions across the country.

Extended information:

The application procedures for trademark digital certificates will be simplified from February 1, 2018:

First, the application procedures for trademark digital certificates will be simplified, February 1 Starting from today, agencies that have submitted digital certificate applications do not need to submit paper materials. After submitting the user registration application in the online application system, the trademark digital certificate will be issued after the review is passed;

The second is to shorten the trademark digital certificate Production cycle: Starting from March 1, newly applied trademark digital certificates will be produced and issued on a weekly basis. The production cycle is 1 to 2 months.

The third is to increase the number of trademark digital certificates issued. Starting from March 1, trademark agencies with an average daily online application volume of more than 50 can apply for a second trademark digital certificate. Trademark agencies with more than 100 online applications can apply for a second trademark digital certificate. You can apply for a third trademark digital certificate, and each trademark agency can apply for up to three trademark digital certificates.

Baidu Encyclopedia - CA Certificate

People's Daily Online - Looking at the development and future of the electronic certification service industry through numbers

People's Daily Online - Simplified application procedures for trademark digital certificates