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Lecture Notes in Computer Science
We investigate how the behaviors of malicious trusted parties affect participants of optimistic non-repudiation protocols. We introduce a notion of risk balance for exchange protocols. Intuitively, risk balance refers to fairness in the amount of protection a protocol offers to the participants against malicious trustees. We explore how risk balance relates to the notions of accountable trustees and transparent trustees previously introduced by Asokan and Micali, respectively. As a case study,doi:10.1007/978-3-642-29420-4_17 fatcat:lziwxqcsk5ck3bd5gtztlkabya