Tom Dowling

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Current Digital Rights Management (DRM) systems support only two-party systems, involving the package server and purchaser. However, for a scalable business model of transacting digital assets, a multi-party DRM system is often necessary which involves more than one distributors, who can promote and distribute the content in regions unknown to the package(More)
It has previously been noted that, for conventional machine code, there is a strong relationship between static and dynamic code measurements. One of the goals of this paper is to examine whether this same relationship is true of Java programs at the bytecode level. To this end, the hypothesis of a linear correlation between static and dynamic frequencies(More)
We describe an identity based signature scheme that uses biometric information to construct the public key. Such a scheme would be beneficial in a legal dispute over whether a contract had been signed or not by a user. A biometric reading provided by the alleged signer would be enough to verify the signature. We make use of Fuzzy extractors [7] to generate(More)
Self-healing key distribution deals with the problem of distributing session keys for secure communication to a dynamic group of users over an unreliable, lossy network in a manner that is resistant to packet lost and collusion attacks. Self-healing property enables a user who has been off-line for some period to recover the lost session keys immediately(More)
We solve the problem of resisting the collusion attack in the one-way hash chain based self-healing key distributions introduced by Dutta et al., coupling it with the prearranged life cycle based approach of Tian et al. that uses the same self-healing mechanism introduced in Dutta et al. Highly efficient schemes are developed compared to the existing works(More)