Dear C'punks, There are many different hardware accelerator devices available for speeding up the modmul operation - The nFast and FastMap to name a few. I am about to build a new one. This unit should be: 1. Expandable A. No harm if exponent is larger than N bits - just slower B. As much parralel calculations as possible - add ALU and get faster results 2. Low cost- keep only the heavy iron in the card - all other is ok to do using host CPU. This should also enable to build the device for several applications - After all I want only to replace a call to some mathemathical subroutine. To realize it the Residue Number System, with some additional memory seems like a good choiche. The system will eventually consist of a card with slots for addtional ALU and RAM modules. You can do away with only one ALU - tha base kit, but it will consume bus bandwidth. Add memory and you are free from that limitation. Slow? Add ALU units. But interestingly my main problem is not about cryptography :) I would like to know, if there are possible other places, where integer arithmetics could be used. Maybe A world would be a better place with fast matrix multiplication? So people. I would very much appreciate, if you could tell me about the ways we could use this integer calculator for other applications as well. I will be using RNS, what gives us a lot of multiplications/additions in parralel. Thank you, Jyri Poldre, Tallinn Technical University.