Jeremiah Blocki @Purdue (Talks)

Password Storage

On the Multi-User Security of Short Schnorr Signatures with Preprocessing. Eurocrypt 2022 [Slides] [Video]
Password Strength Signaling: A Counter-Intuitive Defense Against Password Cracking. CERIAS Security Seminar Fall 2021 [Slides] [Video]
Password Strength Signaling: A Counter-Intuitive Defense Against Password Cracking. GameSec 2021 [Slides]
DAHash: Distribution Aware Tuning of Password Hashing Costs. FC 2021 [Slides] [Video]
Memory Hard Functions, Random Oracles, Graph Pebbling and Extractor Arguments. CSoI Seminar 2019. [Slides]
Memory Hard Functions and Password Hashing. Purdue PURPL Fest 2019 [Video]
Data-Independent Memory Hard Functions: New Attacks and Stronger Constructions. CRYPTO 2019. [Slides] [Video]
Sustained Space Complexity. Purdue Crypto Reading Group (Spring 2019). [Slides]
Bandwith Hard Functions: Reductions and Lower Bounds. CCS 2018. [Slides] [Longer Version] [Video]
On the Economics of Offline Password Cracking. 39th IEEE Symposium on Security and Privacy (S&P 2018) [Slides] [Video]
Memory Hard Functions and Human Authentication. CERIAS Security Seminar 2017. [Slides] [Video]
On the Depth-Robustness and Cumulative Pebbling Cost of Argon2i. TCC 2017. [Slides]
Practical Graphs for Optimal Side-Channel Resistant Memory-Hard Functions. CCS 2017. [Slides] [Video]
Towards a Theory of Data Independent Memory Hard Functions. Real World Crypto 2017. [Slides] [Video]
Designing Proofs of Human Word for Cryptocurrency and Beyond. TCC 2016b [Slides]
Towards a Theory of Data Independent Memory Hard Functions. Charles River Crypto Day (Fall 2016). [Slides]
Attacking Data Independent Memory Hard Functions. CMU Computer Science Distinguished Lecture 2016. [Slides]
Towards a Theory of Data Independent Memory Hard Functions. Simons Institute at Berkeley. Simons Institute Cryptography Reunion 2016. [Slides]
Efficiently Computing Data Independent Memory Hard Functions. CRYPTO 2016. [Slides] [Video]
CASH: A Cost Asymmetric Secure Hash Algorithm for Optimal Password Protection. CSF 2016. [Slides]

Usable and Secure Password Authentication

Towards Human Computable Passwords. ITCS 2017. [Slides] [Video]
Usable and Secure Human Authentication CERIAS Security Seminar at Purdue University, Fall 2016. [Slides]
Towards Human Computable Passwords. Heidelberg Laureate Forum Workshop 2015. [Slides]
Human Computable Passwords. Magic 77: A Celbration of Manuel Blum (2015) [Slides]
Human Computable Passwords. Harvard CRCS Seminar 2015.
Human Computable Passwords. CMU Theory Lunch Fall 2014. [Slides]
Towards Usable Human Authentication Protocols. Boston University Security Seminar. Fall 2015.
Spaced Repetition and Mnemonics Enable Recall of Multiple Strong Passwords. NDSS 2015 [Slides (PDF)] [PowerPoint]
Naturally Rehearsing Passwords. Simons Institute at Berkeley. Securing Computation Workshop 2015
Naturally Rehearsing Passwords. ASIACRYPT 2013. [Slides]
Naturally Rehearsing Passwords. CRYPT Rump Session 2013 . [Slides]
Naturally Rehearsing Passwords. NSF TRUST Conference Fall 2013. [Slides]
Usable and Secure Human Authentication Berkeley ICSI 2014.
Usable and Secure Human Authentication University of Maryland, Fall 2014. [Slides]
Usable and Secure Human Authentication Princeton CITP Luncheon Series 2014. [Slides] [Video]
Usable and Secure Human Authentication Stanford Security Seminar 2014.
Usable and Secure Password Management CMU CyLab Research Talk 2012.
GOTCHA Password Hackers! AISec 2013. [Slides]
Optimizing Password Composition Policies CMU Theory Lunch Seminar Spring 2013 [Slides]
Optimizing Password Composition Policies. EC 2013.[Slides]

Jeremiah Blocki: Talks

Password Storage

Usable and Secure Password Authentication

Private Data Analysis

Game Theory and Accountability

Miscelaneous