A Logo

Feel free to include my content in your page via my
RSS feed

Help Irongeek.com pay for
bandwidth and research equipment:

Subscribestar or Patreon

Search Irongeek.com:

Affiliates:
Irongeek Button
Social-engineer-training Button

Help Irongeek.com pay for bandwidth and research equipment:

paypalpixle


Samsung Pay: Tokenized Numbers, Flaws and Issues - Salvador Mendoza Derbycon 2016 (Hacking Illustrated Series InfoSec Tutorial Videos)

Samsung Pay: Tokenized Numbers, Flaws and Issues
Salvador Mendoza
Derbycon 2016

Samsung announced many layers of security to its Pay app. Without storing or sharing any type of user's credit card information, Samsung Pay is trying to become one of the securest approaches offering functionality and simplicity for its customers. This app is a complex mechanism which has some limitations relating security. Using random tokenize numbers and implementing Magnetic Secure Transmission (MST) technology, which do not guarantee that every token generated with Samsung Pay would be applied to make a purchase with the same Samsung device. That means that an attacker could steal a token from a Samsung phone and use it without restrictions on other devices. Inconvenient but practical is that Samsung's users could utilize the app in airplane mode. This makes impossible for Samsung Pay to have a full control process of the tokens pile. Even when the tokens have their own restrictions, the tokenization process gets weaker after the app generates the first token relating a specific card. How random is a Spay tokenized number? It is really necessary to understand how the tokens heretically share similarities in the generation process, and how this affect the end users' security. What are the odds to guess the next tokenized number knowing the previous one?

Modesto Junior College student

@netxing

Back to Derbycon 2016 video list

Printable version of this article

15 most recent posts on Irongeek.com:


If you would like to republish one of the articles from this site on your webpage or print journal please contact IronGeek.

Copyright 2020, IronGeek
Louisville / Kentuckiana Information Security Enthusiast