A root trusted certificate is a digital certificate issued by a trusted root certification authority (CA), which is an entity that is responsible for verifying and authenticating the identity of digital certificates. The root trusted certificate is the highest-level certificate in the hierarchy of digital certificates, and it is used to establish trust between two parties in a secure communication channel. It is pre-installed on web browsers and operating systems, and it is necessary for the encryption and decryption of digital data, such as online transactions and confidential communications. Without a root trusted certificate, the authenticity and integrity of digital data may be compromised, leaving it vulnerable to cyber attacks and data breaches.