Package org.bouncycastle.crypto.prng

Class DigestRandomGenerator

java.lang.Object
org.bouncycastle.crypto.prng.DigestRandomGenerator
All Implemented Interfaces:
RandomGenerator
public class DigestRandomGenerator extends Object implements RandomGenerator
Random generation based on the digest with counter. Calling addSeedMaterial will always increase the entropy of the hash.

Internal access to the digest is synchronized so a single one of these can be shared.

  • Constructor Details

    • DigestRandomGenerator

      public DigestRandomGenerator(Digest digest)

  • Method Details

    • addSeedMaterial

      public void addSeedMaterial(byte[] inSeed)
      Description copied from interface: RandomGenerator
      Add more seed material to the generator.
      Specified by:
      addSeedMaterial in interface RandomGenerator
      Parameters:
      inSeed - a byte array to be mixed into the generator's state.

    • addSeedMaterial

      public void addSeedMaterial(long rSeed)
      Description copied from interface: RandomGenerator
      Add more seed material to the generator.
      Specified by:
      addSeedMaterial in interface RandomGenerator
      Parameters:
      rSeed - a long value to be mixed into the generator's state.

    • nextBytes

      public void nextBytes(byte[] bytes)
      Description copied from interface: RandomGenerator
      Fill bytes with random values.
      Specified by:
      nextBytes in interface RandomGenerator
      Parameters:
      bytes - byte array to be filled.

    • nextBytes

      public void nextBytes(byte[] bytes, int start, int len)
      Description copied from interface: RandomGenerator
      Fill part of bytes with random values.
      Specified by:
      nextBytes in interface RandomGenerator
      Parameters:
      bytes - byte array to be filled.
      start - index to start filling at.
      len - length of segment to fill.