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¿µ¹®Ç¥Áظí Guideline for the Collection and Application of Noise Source on Operating Systems
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¿µ¹®³»¿ë¿ä¾à Random number is necessary in cryptography area using the service of the confidentiality, the authentication, the non-repudiation, etc. The random bit generator which generates random number has to be designed securely to assure that the application using security services should be secure. If it is assumed that the DRBG(Deterministic Random Bit Generator) is implemented according to the standard which supports secure algorithms, the security of DRBG depends on the noise source which is used as the seed of random bit generator. It shows that the noise source is very important.

The standard describes the method to collect noise source on Operating Systems, such as Linux OS, Windows OS, Android OS, iOS, etc. and from hardware noise source generator which is provided in CPU chip. Generally noise source may be mouse information, keyboard information, interrupt request information, disk information, time information, etc. changed whenever system events happen. If the noise source which is collected on Operating Systems cannot satisfy entropy criteria required, also we can collect noise source from noise source generator which is implemented with hardware. There are the shot noise of Zener diode, the thermic noise of semiconductor circuit, the noise of ring oscillator as a hardware noise source. The standard describes guideline for the method to utilize the noise source in the application environment and gives application note.
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