Paper 2011/172 Original: eprint.iacr.org/2011/172 ↗
The weak password problem: chaos, criticality, and encrypted p-CAPTCHAs
Abstract
Vulnerabilities related to weak passwords are a pressing global economic and security issue. We report a novel, simple, and effective approach to address the weak password problem. Building upon chaotic dynamics, criticality at phase transitions, CAPTCHA recognition, and computational round-off errors we design an algorithm that strengthens security of passwords. The core idea of our method is to split a long and secure password into two components. The first component is memorized by the user. The second component is transformed into a CAPTCHA image and then protected using evolution of a two-dimensional dynamical system close to a phase transition, in such a way that standard brute-force attacks become ineffective. We expect our approach to have wide applications for authentication and encryption technologies.
Metadata
- Available format(s)
PDF- Category
- Foundations
- Publication info
- Preprint.
- History
- 2011-04-05: last updated
- 2011-04-05: published
- Short URL
- https://ia.cr/2011/172
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2011/172,
author = {T. V. Laptyeva and S. Flach and K. Kladko},
title = {The weak password problem: chaos, criticality, and encrypted p-CAPTCHAs},
howpublished = {Cryptology {ePrint} Archive, Paper 2011/172},
year = {2011},
url = {https://eprint.iacr.org/2011/172}
}