Certificate Module

The certificate module serves as a mechanism offered by Cloud Service Providers (Providers) to guarantee user identity security. Users must acquire the relevant certificate before accessing cloud computing resources. Providers utilize these certificates to extend cloud computing services to certified users. The primary functions of this module encompass certificate creation, querying, and revocation.

• Certificate Creation: Users have the ability to generate new certificates using a dedicated method. These certificates encompass user identity information and encryption keys, with the public key details being uploaded to the blockchain via the certificate creation interface.

• Certificate Query: Users can utilize the query function within the certificate contract to verify their certificate details. Providers also have the option to authenticate user identity through this function.

• Certificate Revocation: Users can invoke the revocation function within the certificate contract to invalidate their certificates when they no longer require cloud computing resources. Once revoked, the certificate becomes unusable.

Implementing the certificate module through certificate contracts ensures its security and immutability, thereby safeguarding user identity and data privacy.