Bleichenbacher Attack on RSA Encryption 🔐

The Bleichenbacher attack was first demonstrated by Daniel Bleichenbacher in 1998 and is an adaptive chosen-chiphertext attack against RSA encryption with PKCS#1 v1.5 padding. It is also referred to as the “million message attack” because in his original publication, Bleichenbacher estimated that it takes about one million queries to decrypt an arbitrary ciphertext.

More on Bleichenbacher can be found:
https://tlsacademy.cs.upb.de/labs/bleichenbacher/wiki

TLS Academy is an educational platform for TLS developed by the Paderborn University (https://cs.uni-paderborn.de/en/syssec/) and the Ruhr University Bochum (https://informatik.rub.de). On TLS Academy, you can learn about TLS in general, review potential attacks plus their prevention and solve challenges e.g. by performing attacks on our predefined vulnerable servers.


Visit our website at: https://tlsacademy.cs.upb.de/
#bleichenbacher #ssl #tls #cryptography #tlsacademy


----------- Contents of the Video -----------

0:00 - Intro
0:41 - Adaptive Chosen-Ciphertext Attack
2:07 - Ciphertext Malleability
3:19 - PKCS#1 v1.5 Padding
4:38 - Attack Idea
6:07 - Prevention

Speaker: Selina Kloth