Hi all For a class project, I will be designing a VLSI cmos chip to generate truly random numbers (The chip will be fabricated). I'm limited to a 2-micron standard cmos technology (no fancy BiCMOS, MISC, or anthing else). The most promising design I've seen so far (that I can actually do) is based on clocking a D flip-flop in the following way: ----- 8Khz clock ------ | |----- Random output | | | | (sloppy) slow clock ---- |> | | | ----- The slow clock has enough random variation in it's period for the Dff to generate random numbers. The random bits will , of course, have biases that will need to be corrected with things like Xor gates. Can anyone give me pointers or references to other types of true random number generators and to ways of correcting the biases and other problems in the resulting random bitstream? I'd also appreciate a pointer to an intro text (if such a thing exists) on what makes random numbers good random numbers. (and before you say it, yes I have Applied Cyptography. It's a great book.) One thing I'm concerned about is making sure the random bitstream is uniformly random. What effects, if any, will things like thermal noise, power comsumption (what if there is a sudden rise in power comsumption in another part of the circuit), etc. have on the randomness of the bitstream? I'd also appreciate any other suggestions or advice you have on RNGs. Thanks in advance.