35 citations · 159 across the 35 of their papers we have counts for
24 papers · 1 filter
Conditional Encryption with Applications to Secure Personalized Password Typo Correction
Mohammad Hassan Ameri, Jeremiah Blocki
We introduce the notion of a conditional encryption scheme as an extension of public key encryption. In addition to the standard public key algorithms (, $\mathsf{Enc}…
Cost-Asymmetric Memory Hard Password Hashing
Wenjie Bai, Jeremiah Blocki, Mohammad Hassan Ameri
In the past decade, billions of user passwords have been exposed to the dangerous threat of offline password cracking attacks. An offline attacker who has stolen the cryptographic…
Using Illustrations to Communicate Differential Privacy Trust Models: An Investigation of Users' Comprehension, Perception, and Data Sharing Decision
Aiping Xiong, Chuhao Wu, Tianhao Wang +4
Proper communication is key to the adoption and implementation of differential privacy (DP). However, a prior study found that laypeople did not understand the data perturbation pr…
Towards a Rigorous Statistical Analysis of Empirical Password Datasets
Jeremiah Blocki, Peiyuan Liu
A central challenge in password security is to characterize the attacker's guessing curve i.e., what is the probability that the attacker will crack a random user's password within…
DAHash: Distribution Aware Tuning of Password Hashing Costs
Wenjie Bai, Jeremiah Blocki
An attacker who breaks into an authentication server and steals all of the cryptographic password hashes is able to mount an offline-brute force attack against each user's password…
Password Strength Signaling: A Counter-Intuitive Defense Against Password Cracking
Wenjie Bai, Jeremiah Blocki, Ben Harsha
We introduce password strength information signaling as a novel, yet counter-intuitive, defense mechanism against password cracking attacks. Recent breaches have exposed billions o…