The popular mobile messaging application WhatsApp Messenger has a major design flaw in its cryptographic implementation that could allow attackers to decrypt intercepted messages, according to a Dutch developer.
The problem is that the same key is used to encrypt both outgoing and incoming streams between the client and the WhatsApp server, said Thijs Alkemade, a computer science and mathematics student at Utrecht University in the Netherlands and lead developer of the open-source Adium instant messaging client for Mac OS X.
“RC4 is a PRNG [pseudo-random number generator] that generates a stream of bytes, which are xored [a crypto operation] with the plaintext that is to be encrypted. By xoring the ciphertext with the same stream, the plaintext is recovered,” Alkemade said Tuesday in a blog post that describes the issue in detail.
SOURCE: computerworld.com
Most Commented Posts
2020 Cybersecurity Landscape: 100+ Experts’ Predictions
Cyber Security Predictions 2021: Experts’ Responses
Experts’ Responses: Cyber Security Predictions 2023
Data Privacy Protection Day (Thursday 28th) – Experts Comments
Experts Insight On US Pipeline Shut After Cyberattack
Most Active Commenters
Recent Comments
“Cybersecurity Awareness Month’s new evergreen theme "Secure Our World” is…
“Avoid storing data on personal devices: A crucial but often overlooked…
“I recommend a new nuance to passwords that isn’t often…
“In my role overseeing cloud environments and incident response, I'm…
“Cybersecurity Awareness Month serves as a reminder to confront the…