RSA is officially sweating: New hack bypasses keys without breaking math
Forget everything you thought you knew about RSA security. A team led by Nadia Heninger just proved you don't actually need to factor those massive keys to fake a signature. It’s elegant, it’s terrifying, and your old encryption just got a lot flimsier.
Security researchers just found a way to forge RSA digital signatures without actually needing to solve the impossible math problem that keeps the internet locked tight. Instead of brute-forcing keys, this new method uses a clever take on the Number Field Sieve to trick the system into signing what it shouldn't.
For years, everyone assumed you had to crack the secret key itself to forge a signature. By targeting the Privacy Pass protocol, researchers showed they could slash the security strength of standard keys to levels that are frankly embarrassing. We are talking about dropping protection from supposedly uncrackable limits down to a level that a mid-sized academic cluster can chew through in a few months.
The team performed these operations by hand, without even touching a GPU or AI. They openly admitted that if they had actually bothered to use modern hardware, the remaining security levels would plummet even faster. While this mostly affects implementations using blind signatures, it’s a massive wake-up call for giants like Apple and Cloudflare who rely on these protocols to keep things running behind the scenes.
This is the digital equivalent of finding a master key under the doormat when everyone spent decades trying to pick the lock. The absolute fragility of the internet is hilarious when you realize the entire global financial and security architecture is essentially held together by aging math problems and optimistic assumptions. It is only a matter of time before someone turns this academic hobby project into a weaponized script that makes current encryption look like a polite suggestion rather than a barricade.
Source: Ars Technica
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