A fast chaos-based true random number generator for cryptographic applications

We present the design and the validation by means of state-of-the-art randomness tests of a high-quality true random number generator which internally exploits a pipeline analog-to-digital converter modified to operate as a set of interleaved chaotic maps. Developing the circuit design relying on pipeline A/D technology, which is ubiquity used in all mixed signal systems, allow us to design a fast and very reliable TRNG. A prototype has been implemented in AMS 0.35 μm 2P3M technology and has a nominal throughput of 40 Mbits per second. The active area occupied by the chip is about 0.52 mm2 and the power consumption is less than 30 mW