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Random number generator

A random number generator, generator technology, applied in the field of circuit devices, can solve problems such as fluctuations, and achieve the effect of preventing diffusion

Inactive Publication Date: 2003-02-12
INFINEON TECH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thus, the quality of the random numbers provided by the circuit will fluctuate with the changing frequency of the first signal

Method used

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Embodiment Construction

[0032] figure 1 The entire integrated circuit 1 is shown, with a first clock generator circuit 2 and a second clock generator circuit 13 . The first clock generator circuit 2 has a clock generator 3 for the first signal and a voltage source 4 for the first clock generator. In this example, the frequency of the first signal generated by the first clock generator circuit 2 is set variable, so the clock generator 3 for the first signal can be, say, a VCO whose control An additional oscillator 5 of the first clock generator circuit 2 is connected to the input 10 , which provides a constant frequency signal to the above-mentioned control input 10 via the signal output 9 and the signal line 8 .

[0033] The second clock generator circuit 13 has a clock generator for the second signal, which in this simpler embodiment can be, for example, an oscillator with a constant frequency. Via a voltage source 15 (for the second clock generator) and a voltage source connection 16, the oscilla...

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Abstract

A random number generator on an integrated circuit has a first clock generator circuit with a first voltage supply for generating a first signal of a first frequency or of a first frequency range. A second clock generator circuit has a second voltage supply for generating a second signal of a second frequency or of a second frequency range, such that the second frequency or a mean value of the second frequency range is lower than the first frequency. A generator samples the first signal with the second signal and-generates at least one random number in dependence on the result of the sampling. The clock generator circuits are located as far away from one another as possible on the integrated circuit and / or the two voltage supplies are isolated from one another and / or at least one guard ring is placed around each of the clock generator circuits.

Description

technical field [0001] The invention relates to a circuit arrangement for generating random numbers, in particular a circuit arrangement for a random number generator on an integrated circuit. Background technique [0002] In many fields of science and technology, the generation of random numbers is extremely important. For example, random numbers are used in numerous applications in the fields of statistics and encryption. It is clear that cryptosystems are becoming more and more important in the process of data network dissemination and related security issues. Therefore, the automatic generation of random numbers forms an important field in electrical engineering and electronics, especially in data processing. Both the generation of random numbers and the quality of the random numbers are important. Not all methods produce random numbers with equally "random" properties. Conversely, when analyzing large numbers of random numbers produced by a particular random number ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F7/58G06F1/04G07F7/10G09C1/00H01L21/822H01L27/04H03K3/84H04L9/10H04L9/22
CPCG07F7/1008G06Q20/40975G06Q20/341H04L2209/12H04L9/0662H03K3/84G06F7/588
Inventor N·詹斯森
Owner INFINEON TECH AG
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