The weak password problem: chaos, criticality, and encrypted p-CAPTCHAs

Autor:	Laptyeva, T. V., Flach, S., Kladko, K.
Rok vydání:	2011
Předmět:	Computer Science - Cryptography and Security Condensed Matter - Other Condensed Matter Nonlinear Sciences - Chaotic Dynamics
Druh dokumentu:	Working Paper
DOI:	10.1209/0295-5075/95/50007
Popis:	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. Comment: 5 pages, 6 figers
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1103.6219 Zobrazit plný text záznamu View this record from Arxiv