“The safest counter-measure is to deprecate the RSA key exchange and switch to (Elliptic Curve) Diffie-Hellman…”
Today we’re going to talk about why you should stop using Rsa Key Exchange. One of the biggest weaknesses in the SSL/TLS ecosystem is its backward compatibility. While the rest of the internet moves forward a few stragglers can put the entire internet at risk. Last week, a group of six researchers published a paper that details a new variant of an old exploit called Bleichenbacher’s CAT, which highlights that weakness.
So, let’s spend a little time unraveling the paper, its implications and then we’ll talk about why you should definitely not be using Rsa Key exchange.
Let’s hash it out.
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