SSL certificate is a kind of digital certificate, similar to the electronic copy of driver's license, passport and business license. Because it is configured on the server, it is also called an SSL server certificate.
The SSL certificate complies with the SSL protocol and is issued by a trusted digital certificate authority CA after verifying the identity of the server. It has server identity verification and data transmission encryption functions.
The SSL certificate establishes an SSL secure channel between the client browser and the Web server (Secure socket layer (SSL) security protocol is designed and developed by Netscape Communication. This security protocol is mainly used to provide authentication for users and servers; The transmitted data is encrypted and hidden; to ensure that the data is not changed during transmission, that is, the integrity of the data, has now become a global standard in this field. Because SSL technology has been established in all major browsers and WEB server programs , Therefore, only need to install the server certificate to activate this function), that is, it can activate the SSL protocol to achieve the encrypted transmission of data information between the client and the server, which can prevent the leakage of data information and ensure that both parties pass information Security, and the user can verify whether the website he visits is authentic and reliable through the server certificate. Digital signatures, also known as digital identification and signatures (ie Digital Certificate, Digital ID), provide a method of identity verification on the Internet, which is a digital information file used to mark and prove the identity of both parties in network communication. Driver ’s license or ID card. Digital signatures are mainly used for secure online electronic transaction activities such as sending secure e-mails, accessing secure sites, online bidding and bidding, online contracting, online ordering, online official document secure transmission, online office, online payment, online tax payment and online shopping.
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