Normally "private-key cryptography" is the antonym of "public-key cryptography", which is to say, conventional symmetric-key cryptography such as AES or Enigma. That's what "private-key cryptography" redirects to on Wikipedia. This article is about Astra breaking a message encrypted with a private-key cryptographic algorithm, but one that was already known to be weak. I'm guessing that if you had messages encrypted with weak public-key algorithms it could break those too.
I see what you’re saying. It is generally harder to build a crypto system than to break one so I would find it hard to see potential from the design end before progress on the attack end.
> It is generally harder to build a crypto system than to break one
It was harder to design Symmetric Encryption using e.g. AES-256 than to break it? As far as I know it's design is pretty straight-forward but there is no known way to break it even with all compute of the planet at your disposal (excluding trivial ways like exposing the key).
Isn't the other way round?
It does not mean that breaking one is easy, but it does mean that writing one that's unbreakable it's very, very, very difficult.
Normally "private-key cryptography" is the antonym of "public-key cryptography", which is to say, conventional symmetric-key cryptography such as AES or Enigma. That's what "private-key cryptography" redirects to on Wikipedia. This article is about Astra breaking a message encrypted with a private-key cryptographic algorithm, but one that was already known to be weak. I'm guessing that if you had messages encrypted with weak public-key algorithms it could break those too.
But they said new forms, I think that implied not the ones humans already discovered/designed
I see what you’re saying. It is generally harder to build a crypto system than to break one so I would find it hard to see potential from the design end before progress on the attack end.
> It is generally harder to build a crypto system than to break one
It was harder to design Symmetric Encryption using e.g. AES-256 than to break it? As far as I know it's design is pretty straight-forward but there is no known way to break it even with all compute of the planet at your disposal (excluding trivial ways like exposing the key).
2 replies →
Building a crypto system has so many footguns, I'd be amazed if it could build one that stands up to attack
1 reply →
Isn't the other way round? It does not mean that breaking one is easy, but it does mean that writing one that's unbreakable it's very, very, very difficult.
1 reply →