- Some applications of mathematics in cryptography -- Galbraith's Law, Vietnam Institute for Advanced Study in Mathematics (VIASM) Meeting on Mathematical Aspects of Computer Sciences, December 4, 2021.

- Towards a Theory of Special-purpose Program Obfuscation, Trustcom 2020, December 31, 2020.

- Security levels in cryptography, Jennifer Seberry Invited Lecture, ACISP 2020, November, 2020.

- Similarities and Differences between Diffie-Hellman and Isogeny Crypto, Indian Institute of Technology Kharagpur, August, 2020.

- From linear algebra to post quantum cryptography, NZ Mathematics Colloquium, Palmerston North, December 2019.

- Isogeny Cryptography: Strengths, Weaknesses, and Challenges, Kangacrypt, Adelaide, December 2018.

- The fall and rise and fall and rise of supersingular elliptic curves (in cryptography), Conference on open questions in cryptography and number theory, UC Irvine, September 18,2018.

- Current trends and challenges in post-quantum cryptography, ANTS 2018, Madison, July 19, 2018.

- Pythagoras to Turing to Snowden
Diophantine equations, computation and privacy, Inaugural Professorial Lecture, Auckland, October 4, 2016.

- On the Security of Supersingular Isogeny
Cryptosystems, Darmstadt, Germany, September 6, 2016.

- Algorithms for the Approximate Common Divisor
Problem, ANTS, Kaiserslautern, Germany, August 29, 2016.

- Challenges for lattice cryptography, Post Quantum Crypto 2016, Fukuoka, Japan, February 2016.

- Linear algebra with errors, coding theory, cryptography and Fourier analysis on finite groups, Aitken Lectures, UK, October 2015 (full version).

- Kangaroos, Card Tricks and Discrete Logs, Aitken Lectures, UK, October 2015.

- Algorithms for the ECDLP, ECC 2015, Bordeaux, September 28, 2015.

- Computational problems in lattice-based cryptography, Cryptologic Algorithms Conference, May 9, 2015, Nanjing, China.

- Distinguishing Maximal Orders of Quaternion Algebras by their Short Elements, ANTS 2014, August 7, 2014, Korea.

- Degustazione of the ECDLP, DLP 2014, Ascona, Switzerland, May 5, 2014.

- (pseudo-)Random walks in cryptography, lecture at ECC 2012, Queretaro, Mexico.

- Lattices and their applications in cryptography and cryptanalysis, tutorial lectures at INDOCRYPT 2012, Kolkata, India.

- A survey of hyperelliptic pairings, lecture at Pairing2007 conference, Tokyo, Japan.

Last Modified: 4-12-2021