[ Last changed: 1st June 1995 ]
Security Group Seminar, 16th May 1995
- Speaker:
- Mark Lomas, University of Cambridge
- Date:
- Tuesday 16th May 4.15pm
- Place:
- Room TP4, Computer Laboratory
- Title:
- TRUSTED THIRD PARTIES
What is trust? When people use the term "Trusted Third Party" what
exactly do they mean? Often they don't mean what they think they
do.
My dictionary gives several definitions, including:
- a firm belief in the reliability or truth or strength etc. of a
person or thing.
- the state of being relied upon.
I suggest that if you accept the first definition you will come to
grief. In the context of computer security a better definition might be:
- something that is capable of violating your security policy.
Systems should be designed such that Trusted Third Parties cannot
avoid leaving evidence of misbehaviour.
PostScript version of slides
Security Group Seminar, 16th May 1995 / Mark.Lomas@cl.cam.ac.uk