Welcome!

Welcome to the official BlackBerry Support Community Forums.

This is your resource to discuss support topics with your peers, and learn from each other.

inside custom component

Java Development

Reply
Highlighted
Developer
Posts: 15
Registered: ‎08-14-2008
My Device: 8300 with 4.5.0.52 b75 OS
Accepted Solution

RSA encryption using key with 4096 bits

Hi,

 

I would like to use 4096 bit RSA encryption on BB device (for testing I'm using BB 8300 with 4.5.0.52 b75 OS).

Is this possible?  I'm getting exception in this code:

 

RSAKeyPair sampleKeyPair;
            sampleKeyPair= new RSAKeyPair(new RSACryptoSystem(4096));

 

Changing 4096 into 2048 fix this exception, but it's not solution for me.

 

Thanks.

 

Developer
Posts: 15
Registered: ‎08-14-2008
My Device: 8300 with 4.5.0.52 b75 OS

Re: RSA encryption using key with 4096 bits

I reply myself.

 

After reading 'Blackberry Enterprise Soluttion Security, Technical Overview', I've found that i can use 4096 bits encryption algorithm, but Key generation is restricted to 2048 bits (probably performance issue).

 

So the problem was not with 

new RSACryptoSystem(4096)

but with generating RSAKeyPair.

 

I would recieve private RSA key from outside, so i don't need to generate one (at least at current state of the project i'm working on)

 

i'm really curious, if somebody know how to generate 4096 bits RSA  Key.