Physical Noise Sources Of High-speed Digital Design

The digital physical noise generation is widely used in secureinformation system because it can produce random numbers which possesses good randomness, which are generally used as key. With the development of computing technology and cryptography, high-speed digital physical noise generator is urgently required in cryptography at present.Circuit design scheme of the high-speed digital physical noise generator was mainly discussed in this paper. Circuit design based on rotating coin model and iteration loop theory was proposed and explained beginning with the hot noise. At the same time we also considered the probability of the chip integrity of the digital physical noise generation. The test outcome was given in this paper. In the end we proved that the highspeed digital physical noise generation we designed possesses good randomness both in analysis of the theory and result of the virtual testing.