Field Detail

• _context

  protected final transient I2PAppContext _context

  _context.

Constructor Detail

• RandomSource

  public RandomSource(I2PAppContext context)

  Deprecated - do not instantiate this directly, as you won't get the good one (Fortuna). Use getInstance() or I2PAppContext.getGlobalContext().random() to get the FortunaRandomSource instance.

Method Detail

• feedEntropy

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

  feedEntropy.

  Specified by:

  feedEntropy in interface EntropyHarvester

  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

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

  feedEntropy.

  Specified by:

  feedEntropy in interface EntropyHarvester

  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

• getInstance

  public static RandomSource getInstance()

  Singleton for whatever PRNG i2p uses. Same as I2PAppContext.getGlobalContext().random(); use context.random() if you have a context already.

  Returns:

  I2PAppContext.getGlobalContext().random()

• harvester

  public EntropyHarvester harvester()

  harvester.

• initSeed

  public final boolean initSeed(byte[] buf)

  May block up to 10 seconds

• loadSeed

  public void loadSeed()

  May block up to 10 seconds

• nextBytes

  public void nextBytes(byte[] buf,
                        int offset,
                        int length)

  Not part of java.util.SecureRandom, but added since Fortuna supports it. This code unused, see FortunaRandomSource override

• nextInt

  public int nextInt(int n)

  According to the java docs (http://java.sun.com/j2se/1.4.1/docs/api/java/util/Random.html#nextInt(int)) nextInt(n) should return a number between 0 and n (including 0 and excluding n). However, their pseudocode, as well as sun's, kaffe's, and classpath's implementation INCLUDES NEGATIVE VALUES. Ok, so we're going to have it return between 0 and n (including 0, excluding n), since thats what it has been used for. This code unused, see FortunaRandomSource override

  Overrides:

  nextInt in class Random

• nextLong

  public long nextLong(long n)

  Like the modified nextInt, nextLong(n) returns a random number from 0 through n, including 0, excluding n. This code unused, see FortunaRandomSource override NOPMD - nextLong(long) doesn't override SecureRandom (added in Java 17)

• saveSeed

  public void saveSeed()

  saveSeed.

• signedNextInt

  public int signedNextInt()

  This code unused, see FortunaRandomSource override

  Returns:

  all possible int values, positive and negative

• writeSeed

  public static final void writeSeed(byte[] buf)

  writeSeed.