net.i2p.crypto

## Interface EntropyHarvester

- All Known Implementing Classes:
    FortunaRandomSource, RandomSource

      public interface EntropyHarvester

  Allow various components with some entropy to feed that entropy back into some PRNG. The quality of the entropy provided varies, so anything harvesting should discriminate based on the offered "source" of the entropy, silently discarding insufficient entropy sources.

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `feedEntropy(String source, byte[] data, int offset, int len)` Feed the entropy pools with data[offset:offset+len]
    `void` | `feedEntropy(String source, long data, int bitoffset, int bits)` Feed the entropy pools with the bits in the data

- - ### Method Detail

    - #### feedEntropy

          void feedEntropy(String source,
                           byte[] data,
                           int offset,
                           int len)

      Feed the entropy pools with data[offset:offset+len]
      Parameters:
        `source` - origin of the entropy, allowing the harvester to determine how much to value the data
        `offset` - index into the data array to start
        `len` - how many bytes to use

    - #### feedEntropy

          void feedEntropy(String source,
                           long data,
                           int bitoffset,
                           int bits)

      Feed the entropy pools with the bits in the data
      Parameters:
        `source` - origin of the entropy, allowing the harvester to determine how much to value the data
        `bitoffset` - bit index into the data array to start (using java standard big-endian)
        `bits` - how many bits to use