de.flexiprovider.pqc.hbc
Class FIPS_186_2_PRNG

java.lang.Object
  |
  +--de.flexiprovider.pqc.hbc.FIPS_186_2_PRNG

All Implemented Interfaces:

PRNG

public class FIPS_186_2_PRNG

extends java.lang.Object

implements PRNG

This class provides random number generation for CMSS.

Author:

Sebastian Blume, Martin Döring

Constructor Summary

FIPS_186_2_PRNG()

Method Summary

void	initialize(MessageDigest md) Initialize the RNG with the given message digest.
byte[]	nextSeed(byte[] outSeed) Compute the next seed value, return a random byte array, and update the seed to the next value.

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FIPS_186_2_PRNG

public FIPS_186_2_PRNG()

Method Detail

initialize

public void initialize(MessageDigest md)

Initialize the RNG with the given message digest.

Specified by:

initialize in interface PRNG

Parameters:

md - the message digest for constructing the random numbers

nextSeed

public byte[] nextSeed(byte[] outSeed)

Compute the next seed value, return a random byte array, and update the seed to the next value.

Specified by:

nextSeed in interface PRNG

Parameters:

outSeed - byte array in which (1 + inSeed + RAND) mod 2ⁿn will be stored

Returns:

byte array containing H(inSeed)