【国外标准】 Random Number Generation - Part 4: Random Bit Generator Constructions.

Cryptography and security applications make extensive use of random numbers and random bits. However, the generation of random bits is problematic in many practical applications of cryptography. The purpose of American National Standard (ANS) X9.82 is to specify a standard for the design of random bit generators (RBGs) and to provide methods for converting the random bits to random numbers when required. By matching the security requirements of the application using the random bits with the security claims of the RBG generating those bits, an application can safely use the random bits produced by an RBG conforming to this Standard. Part 4 specifies how Approved RBGs shall be constructed, using components from Parts 2 and 3 of the Standard. Part 4 specifies constructions for an RBG, and constructions for building components that are used within those RBG constructions. The information in Part 4 is intended to be combined with the information in the Parts 2 and 3 in order to: Construct an RBG with the required security properties that will be compliant with the Standard, and Verify that an RBG has been constructed in compliance with the Standard. The precise structure, design and development of an RBG is outside the scope of this Standard.