I am currenlty encoding a message with manage modpow (RSA) method on USBizi. The RSA is 1024bit.
The speed is the problem now, it takes about 1900 seconds to do the calulation.
Have someone written a modpow method in native code?
I use BigInteger to hold modulus and exponent.
How are you doing RSA since we have dropped RSA support on USBizi a while back?
In BigInteger class I call modpow with modulus and exponent as input and out I get the message, but performance is not the best.
I have now installed Yagarto package to see if I could make it run under native.
I tried to use the RSA native method that is included for EMX on a Embedded Master Dev board with the latest EMX firmware, but the result is bigger (256 bytes , should be 128) and wrong.
Maybe this will help GHI Electronics – Where Hardware Meets Software