RSA decryption on Smartphone

[Guest othman20001]

Hi,

I want to decrypt a message using RSA algorithm, with a 1024 bits key. I look at cryptoAPI, but it is too complex to use for a simple task such as decrypting a message.

Basicaly, I want to write the following : msg^exponent.modulo(n) (RSA decryption). But I can't use 1024 bits keys, it's too long to store and to calculate.

Any help would be really appreciated.

Thanks,

Othman.