Package org.bouncycastle.crypto.prng.drbg

Interface SP80090DRBG

All Known Implementing Classes:
CTRSP800DRBG, DualECSP800DRBG, HashSP800DRBG, HMacSP800DRBG
public interface SP80090DRBG
Interface to SP800-90A deterministic random bit generators.

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    generate(byte[] output, byte[] additionalInput, boolean predictionResistant)
    Populate a passed in array with random data.
    int
    getBlockSize()
    Return the block size of the DRBG.
    void
    reseed(byte[] additionalInput)
    Reseed the DRBG.

  • Method Details

    • getBlockSize

      int getBlockSize()
      Return the block size of the DRBG.
      Returns:
      the block size (in bits) produced by each round of the DRBG.

    • generate

      int generate(byte[] output, byte[] additionalInput, boolean predictionResistant)
      Populate a passed in array with random data.
      Parameters:
      output - output array for generated bits.
      additionalInput - additional input to be added to the DRBG in this step.
      predictionResistant - true if a reseed should be forced, false otherwise.
      Returns:
      number of bits generated, -1 if a reseed required.

    • reseed

      void reseed(byte[] additionalInput)
      Reseed the DRBG.
      Parameters:
      additionalInput - additional input to be added to the DRBG in this step.