This Standard defines techniques for the generation of random numbers that shall be used whenever ASC X9 Standards require the use of random number or bitstring for cryptographic purposes. Part 4 specifies how to build complete random bit generators from the mechanisms in X9.82 Part 2 and Part 3.
ANSI X9.82-4-2011 history
2011ANSI X9.82-4-2011 Random Number Generation - Part 4: Random Bit Generator Constructions