Article: KaKaRoTo Speaks of ECDSA Algorithm - CFW Impossible

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You can view the page at http://psx-scene.com/forums/content....CDSA-Algorithm

[Zangetsu21]

I flunked math in school so all I see is something that looks like and old arcade game (forgot the name).

Good luck Kakaroto, you're gonna own the PS3!!

[dualshock1992]

KaKaRoTo is so much win)

[Mrox2]

Hope u the best !

[Shrek]

This is the sort of developer that excites me. One that is actually really clever, one that shares his knowledge and gives to the scene. Some of the latest news we have had in regards to these simply rubbish updates and crap firmwares that are no use to man nor beast are put to shame by Kaka. It's a bit like the difference between night and day.

[Darkman-PSG]

You guys need to read what the mods of this site didnt put in what he said pertaining to the ECDSA Algorithm saying its IMPOSSIBLE TO FIND THE KEYS AND ITS IMPOSSIBLE TO HAVE A CFW OVER 3.56

Once you know the private key dA, you can now sign your files and the PS3 will recognize it as an authentic file signed by Sony. This is why it’s important to make sure that the random number used for generating the signature is actually “cryptographically random”. This is also the reason why it is impossible to have a custom firmware above 3.56, simply because since the 3.56 version, Sony have fixed their ECDSA algorithm implementation and used new keys for which it is impossible to find the private key.. if there was a way to find that key, then the security of every computer, website, system may be compromised since a lot of systems are relying on ECDSA for their security, and it is impossible to crack.

[Tranced]

LOL @ P=k*G.

@Darkman-PSG, not hiding anything. I just didn't want a great wall of China (Text). I expect readers to read. I will update the article before everyone starts complaining.

[floeti]

You guys need to read what the mods of this site didnt put in what he said pertaining to the ECDSA Algorithm saying its IMPOSSIBLE TO FIND THE KEYS AND ITS IMPOSSIBLE TO HAVE A CFW OVER 3.56

Once you know the private key dA, you can now sign your files and the PS3 will recognize it as an authentic file signed by Sony. This is why it’s important to make sure that the random number used for generating the signature is actually “cryptographically random”. This is also the reason why it is impossible to have a custom firmware above 3.56, simply because since the 3.56 version, Sony have fixed their ECDSA algorithm implementation and used new keys for which it is impossible to find the private key.. if there was a way to find that key, then the security of every computer, website, system may be compromised since a lot of systems are relying on ECDSA for their security, and it is impossible to crack.

This does not imply, that a CFW above 3.56 is impossible. It may be impossible in the near term future to break ECDSA. BUT there is the possibility to CHANGE the public key in the PS3 (e.g. by an exploit) and then a KNOWN private key can be used. I don't understand why everybody is so keen on breaking ECDSA. In my opinion it is far more efficient to just hack the authentication code.

[Arsehel]

For real? What does this mean? No CFW anymore, not even in the future? Guess I'm going to go play some backupped games and after that go ofw!:P Is that a good idea?

[phyrex711]

You guys need to read what the mods of this site didnt put in what he said pertaining to the ECDSA Algorithm saying its IMPOSSIBLE TO FIND THE KEYS AND ITS IMPOSSIBLE TO HAVE A CFW OVER 3.56

I honestly don't care if it's CFW, a Dongle or a special Rock you connect via USB, I just want to play newer games... period..

Hmmm, looks like TrueBlue wins..