What is tcb

By clicking sign up, you agree to receive emails from Techopedia and agree to our Terms of Use and Privacy Policy. A trusted computing base TCB refers to all of a computer system's hardware, firmware and software components that combine to provide the system with a secure environment. It enforces security policies to ensure security of the system and its information. System safety is achieved by provisioning methods, like controlling access, requiring authorization to access specific resources, enforcing user authentication, safeguarding anti-malware and backing up data.

As a whole, the TCB's ability and performance are based on the correctness and relevance of its applied techniques and mechanisms, the safety and protection of those mechanisms to ensure their correctness and the right input of parameters required in security policies. In short, to maintain synergy between components, any hardware or software should only be part of the given TCB if - and only if - it is designed to be part of the mechanisms of that TCB.

Computer systems that do not implement TCB as part of their architectural design are only secured because of external solutions. Moreover, the reasoning behind a computer system's security depends on the proper understanding of its capabilities and limitations. This means that because a computer with a TCB can do anything that a Von Neumann architecture computer can, there likely will be things that users do, intentionally or unintentionally, to make the system less secure.

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Featured Video. About Graceland Mansion, Home of the King. Where Are the Woodstock Performers Now? Your Privacy Rights. To change or withdraw your consent choices for LiveAbout. At any time, you can update your settings through the "EU Privacy" link at the bottom of any page. What does TCB mean? Trouble Came Back. An intermittent or difficult-to-reproduce problem that has failed to respond to neglect or shotgun debugging.

Compare heisenbug. Not to be confused with: 2. Couldn't find the full form or full meaning of TCB? Discuss these TCB abbreviations with the community: 1 Comment. Notify me of new comments via email. Dharmdev Gupta. Like Reply Report 1 year ago. Cancel Report. Create a new account. Log In. Know what is TCB? Got another good explanation for TCB? Don't keep it to yourself!

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