Trusted Computing

  • Antonio Lioy
  • Gianluca Ramunno


Trusted computing (TC) is a set of design techniques and operation principles to create a computing environment that the user can trust to behave as expected. This is important in general and vital for security applications. Among the various proposals to create a TC environment, the Trusted Computing Group (TCG) architecture is of specific interest nowadays because its hardware foundation – the trusted platformmodule (TPM)– is readily available in commodity computers and it provides several interesting features: attestation, sealing, and trusted signature. Attestation refers to integrity measures computed at boot time that can later be used to prove system integrity to a third party across a network. Sealing protects some data (typically application level cryptographic keys or configurations) in hardware so that it can be accessed only when the system is in a specific state (i.e., a specific set of software modules is running, from drivers up to applications). Trusted signature is performed directly by the hardware and is permitted only when the system is in a specific state. TC does not provide perfect protection for all possible attacks: it has been designed to counter software attacks and some hardware ones. Nonetheless it is an interesting tool to build secure systems, with special emphasis on the integrity of the operations.


Trust Platform Module Trust Computing Direct Anonymous Attestation Privilege Level Trust Computing Base 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Antonio Lioy
    • 1
  • Gianluca Ramunno
    • 1
  1. 1.Dip. di Automatica e InformaticaPolitecnico di TorinoTorinoItaly

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