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Wednesday, March 28, 2018 10:30 am - 10:30 am EDT (GMT -04:00)

Seminar • Cryptography, Security, and Privacy — Breaking Cryptographic Barriers

Dakshita Khurana, PhD candidate
Department of Computer Science, UCLA

Can we provably immunize protocols against coordinated attacks on the internet? Can we verify that computation is performed correctly while preserving the privacy of underlying data? Can we enable mutually distrusting participants to securely compute on distributed private data?

These are some of the core challenges that lie at the heart of modern cryptography and secure protocol design.

Wednesday, April 4, 2018 1:30 pm - 1:30 pm EDT (GMT -04:00)

PhD Seminar • Algorithms and Complexity: Succinct Color Searching in One Dimension

Hicham El-Zein, PhD candidate
David R. Cheriton School of Computer Science

We present succinct data structures for one-dimensional color reporting and color counting problems. We are given a set of $n$ points with integer coordinates in the range $[1,m]$ and every point is assigned a color from the set $\{\,1,\ldots,\sigma\,\}$. A color reporting query asks for the list of distinct colors that occur in a query interval $[a,b]$ and a color counting query asks for the number of distinct colors in $[a,b]$.