Package net.i2p.crypto

Class YKGenerator

  • final class YKGenerator
extends Object
    Precalculate the Y and K for ElGamal encryption operations. This class precalcs a set of values on its own thread, using those transparently when a new instance is created. By default, the minimum threshold for creating new values for the pool is 20, and the max pool size is 50. Whenever the pool has less than the minimum, it fills it up again to the max. There is a delay after each precalculation so that the CPU isn't hosed during startup. These three parameters are controlled by java environmental variables and can be adjusted via: -Dcrypto.yk.precalc.min=40 -Dcrypto.yk.precalc.max=100 -Dcrypto.yk.precalc.delay=60000 (delay is milliseconds) To disable precalculation, set min to 0
    Author:
    jrandom

    • Constructor Detail

      • YKGenerator

        public YKGenerator​(I2PAppContext context)
        Caller must also call start() to start the background precalc thread. Unit tests will still work without calling start().

    • Method Detail

      • start

        public void start()
        Start the background precalc thread. Must be called for normal operation. If not called, all generation happens in the foreground. Not required for unit tests.
        Since:
        0.9.14

      • shutdown

        public void shutdown()
        Stop the background precalc thread. Can be restarted. Not required for unit tests.
        Since:
        0.8.8

      • getNextYK

        public BigInteger[] getNextYK()
        Returns:
        rv[0] = Y; rv[1] = K