This topic introduces the terms that are related to SSL certificates and the services that are provided to manage SSL certificates. SSL certificates refer to server certificates.

Alibaba Cloud SSL certificates are trusted credentials that are issued by well-known certificate authorities (CAs). The CAs are certified by WebTrust. You can use SSL certificates to verify the identity of your website and encrypt data in transmission.
Note SSL certificates adopt the public key cryptography. An SSL certificate uses a key pair and an algorithm such as Rivest-Shamir-Adleman (RSA), elliptic curve cryptography (ECC), or SM to encrypt and decrypt data. For more information, see Supported encryption algorithms and What are a public key and a private key?

HTTP cannot be used to encrypt data. During HTTP transmission, data leaks, data tampering, or phishing attacks may occur. After you install an SSL certificate on your web server, you can establish HTTPS-encrypted connections between your web server and website. This ensures the security of your website and data transmission.

Alibaba Cloud Certificate Management Service supports SSL certificate purchase and issuance. Certificate Management Service also provides the following services.
Service Description References
Manage third-party SSL certificates free of charge Certificate Management Service allows you to upload an SSL certificate that is purchased and issued from a third-party certificate service provider to the Certificate Management Service console for centralized management. Upload an SSL certificate