In this work, we show how to use indistinguishability obfuscation to build multiparty key
exchange, efficient broadcast encryption, and efficient traitor tracing. Our schemes enjoy …

We construct a fully collusion resistant tracing traitors system with sublinear size ciphertexts
and constant size private keys. More precisely, let N be the total number of users. Our …

We introduce a simple primitive called Augmented Broadcast Encryption (ABE) that is
sufficient for constructing broadcast encryption, traitor-tracing, and trace-and-revoke …

We proposed a new public-key traitor tracing scheme with revocation capability using the
dynamic share and entity revocation techniques. The enabling block of our scheme is …

A traitor tracing system enables a publisher to trace a pirate decryption box to one of the
secret keys used to create the box. We present a traitor tracing system where ciphertext size …

In [8, 9] Boneh et al. presented the first fully collusion-resistant traitor tracing and trace &
revoke schemes. These schemes are based on composite order bilinear groups and their …

We introduce the k-LWE LWE problem, a Learning With Errors variant of the k-SIS problem.
The Boneh-Freeman reduction from SIS to k-SIS suffers from an exponential loss in k. We …

In the distribution of digital content, users may collude and utilize their secret keys to create
pirate decoders which enable illegally users to receive the same service. As a useful …

Traitor tracing schemes are a very useful tool for preventing piracy in digital content
distribution systems. A traitor tracing procedure allows the system-manager to reveal the …

In this work we seek to construct collusion-resistant traitor tracing systems with small
ciphertexts from standard assumptions that also move toward practical efficiency. In our …