Post: How signing works and how Sony gets the private key [ECDSA]
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03-27-2013, 08:24 AM
#1
Dr. Mayham
Banned
Private key generation:
AutoSeededRandomPool prng;
ECDSA<ECP, SHA1>:
rivateKey privateKey;
privateKey.Initialize( prng, ASN1::secp160r1() );
bool result = privateKey.Validate( prng, 3 );
if( !result ) { ... }
Public key generation [How to get it from the private key]:
privateKey.MakePublicKey( publicKey );
bool result = publicKey.Validate( prng, 3 );
if( !result ) { ... }Once the public key has been derived, the public element can be retrieved as follows.
const ECP:oint& q = publicKey.GetPublicElement()
const Integer& qx = q.x;
const Integer& qy = q.y;
Now for the signing!
To generate a private key for signing using a Signer, perform the following.
AutoSeededRandomPool prng;
ECDSA<ECP, SHA1>::Signer signer;
signer.AccessKey().Initialize( prng, ASN1::secp160r1() );
bool result = signer.AccessKey().Validate( prng, 3 );
if( !result ) { ... }
We can also use a PrivateKey to initialize a signer:
ECDSA<ECP, SHA1>:rivateKey privateKey
...
ECDSA<ECP, SHA1>::Signer signer(privateKey);
bool result = signer.AccessKey().Validate( prng, 3 );
if( !result ) { ... }
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03-29-2013, 03:26 PM
#11
Killer1478
Winning.
03-29-2013, 05:29 PM
#12
ELITE xxmcvapourxx
Guest
Originally posted by Killer1478
A header file would do nothing to help though.
How do you know this? have you even looked into it or even understand what ECDSA mean's all it is a mathematics algor nothing more nothing less,infact if you read up ecies it use's the same key pair as ecdsa,and if you look at psn you would find out the authentication server generates random key's aka cipher encrypted handshake message ill give you a clue look for MD2RSA when you sign onto psn.if you want to know more join me on irc efnet #ps3dev! most of the dev's will agree with me on this !
03-30-2013, 04:56 PM
#15
Killer1478
Winning.
Originally posted by xxmcvapourxx
How do you know this? have you even looked into it or even understand what ECDSA mean's all it is a mathematics algor nothing more nothing less,infact if you read up ecies it use's the same key pair as ecdsa,and if you look at psn you would find out the authentication server generates random key's aka cipher encrypted handshake message ill give you a clue look for MD2RSA when you sign onto psn.if you want to know more join me on irc efnet #ps3dev! most of the dev's will agree with me on this !
It's a header, if you really think a bunch of #include blahblahblah.h is gonna help anyone with cracking sony's private key you'd be wrong.
03-30-2013, 05:14 PM
#16
riggstq
[move]Haters Gonna Hate[/move]
Originally posted by ryu2050
In short
No one can breach ECDSA, so therefore no jailbreak on new firmware greater than 3.56
Live with the fact!!!
No one can breach ECDSA, so therefore no jailbreak on new firmware greater than 3.56
Live with the fact!!!
that isnt a fact people can isntall cfw over 3.60 they need to genreate there per console data and then mod the pup accordingly one thing that wont ever be possible again is a release of a cfw that installs on ALL ps3s above 3.60 as the data is constantly changing from console to console correct me if im wrong but i remember reading this from a reliable source
03-30-2013, 05:33 PM
#17
GrimReaper_K2K
Grunt
03-31-2013, 01:30 AM
#18
ryu2050
Treasure hunter
Originally posted by riggstq
that isnt a fact people can isntall cfw over 3.60 they need to genreate there per console data and then mod the pup accordingly one thing that wont ever be possible again is a release of a cfw that installs on ALL ps3s above 3.60 as the data is constantly changing from console to console correct me if im wrong but i remember reading this from a reliable source
You are wrong bro hackers need to crack the ECDSA sig of the firmware so that the ps3 thinks the .pup update came from Sony.Otherwise we can have as many and future cfw but we will not be able to install them.this only applies for firmware greater than 3.56.
Since hacking of ecdsa is near impossible so installing a cfw over ofw greater than 3.56 is out of the question!!!
04-01-2013, 02:45 AM
#19
DeathsDisciple
Gym leader
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