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Digital true random oscillation signal generator

A technology of oscillating signals and random oscillations, applied in electric pulse generator circuits, etc., can solve problems such as low-rate data coupling, and achieve the effects of low resource consumption, strong design versatility, high uncertainty and robustness

Inactive Publication Date: 2011-07-20
ZHEJIANG UNIV
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  • Claims
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AI Technical Summary

Problems solved by technology

A high-speed digital true random oscillation signal generator is the basis for realizing the random source of oscillation sampling. Traditional oscillation signal generators are mostly realized by ring oscillation circuits, which have disadvantages such as low speed and data coupling. By changing the traditional structure of ring oscillation circuits To obtain an oscillator circuit with higher output rate and stronger robustness

Method used

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Embodiment Construction

[0016] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0017] Such as figure 1 As shown, the digital true random oscillation signal generator includes a high-speed random oscillation circuit and a mode control unit: the mode control unit is connected with the high-speed random oscillation circuit. When the system reset control signal is valid, the mode control unit is reset, and the high-speed random oscillator circuit stops oscillating; when the system reset control signal is invalid, the high-speed random oscillator circuit outputs a high-speed random oscillator signal under the control of the mode control unit.

[0018] Such as figure 2 As shown, the described high-speed random oscillator circuit is a multi-mode Fibonacci oscillator OSC, and the described OSC includes 1 NAND gate N1, 2 selectors M1~M2, 4 XOR gates X1~X4, 34 For the inverters I1~I34, the two input terminals of the NAND gate N1 are respectively conne...

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Abstract

The invention discloses a digital true random oscillation signal generator, which comprises a high speed random oscillation circuit and a mode control unit, wherein the high speed random oscillation circuit is asynchronously operated, and has a complex feedback network and a plurality of operating modes; and the mode control unit is adopted to control the high speed random oscillation circuit to produce a high speed oscillation signal, and can obtain a random bit stream with a high entropy by sampling. When a system resetting control signal is effective, the mode control unit is reset, the high speed random oscillation circuit stops oscillating, and a system is in a low-power consumption state. The digital true random oscillation signal generator realizes the mode change and power consumption control of the oscillation circuit by using a standard digital circuit unit, has a compact structure, consumes fewer resources and is suitable to be integrated in a chip.

Description

[0001] technical field [0002] The invention relates to a digital true random oscillation signal generator used in a random number generator, which can form an entropy source through sampling, and then generate a high-speed high-entropy random bit stream. Background technique [0003] Random numbers play a very important role in cryptography. Pseudo-random numbers cannot meet the requirements in applications with high security strength. Therefore, the research on true random number generators has been paid attention to, and the random source (entropy source) in the random number generator has a decisive influence on the characteristics of the output sequence. At present, the known random source realization methods include amplified resistor thermal noise method, chaotic circuit method, method based on PN junction scattering noise, oscillation sampling method and so on. Among them, the oscillation sampling method is simple in principle and easy to implement. It can be reali...

Claims

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Application Information

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IPC IPC(8): H03K3/02
Inventor 沈海斌陈武张雷雷周祺
Owner ZHEJIANG UNIV
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