1. [The] Mechanism by which a person using a terminal can communicate directly with the trusted computing base (TCB). Trusted path can only be activated by the person or the TCB and cannot be imitated by untrusted software. [INFOSEC-99]
2. A mechanism by which a user can communicate directly with a trusted function [CESG]. Example: A trusted path is required… (Read More →)

[A] process that has privileges to circumvent the system security policy and has been tested and verified to operate only as intended. [INFOSEC-99]

1. [The] ability to ensure recovery without compromise after a system failure. [INFOSEC-99]
2. The property of a system which ensures that it can be returned to a secure operating state following a system failure, in accordance with the Security Policy [CESG].

Part of a system that contains trusted functions [CESG].

1. [The] software portion of a trusted computing base (TCB). [INFOSEC-99]
2. The software portion of a Trusted Computing Base [TCSEC].

1. A security authority trusted by communicating entities with respect to specific security-related activities (e.g., for the purpose of authentication). [T1.243-1995]
2. A security authority or its agent, trusted by other entities with respect to security-related activities [10181-1].
3. A security authority or its agent, trusted by other entities with respect to security-related activities. In the context of this standard… (Read More →)

1. An operation table for a logic operation.
2. A table that describes a logic function by listing all possible combinations of input values and indicating, for each combination, the output value.

Transport Stream

[In security, the] system for identifying the type and purpose of certain items of COMSEC material. [INFOSEC-99]

Abbreviation for transmission security key.