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RandomBitsSupplier


org.apache.harmony.security.provider.crypto

Class RandomBitsSupplier

  • java.lang.Object
    • org.apache.harmony.security.provider.crypto.RandomBitsSupplier
  • All Implemented Interfaces:
    SHA1_Data


    public class RandomBitsSupplier
    extends Object
    implements SHA1_Data
    The static class providing access on Linux platform to system means for generating true random bits.
    The source for true random bits is one of Linux's devices "/dev/urandom" or "/dev/random" depends on which one is available; if both the first is used.
    If no device available the service is not available, that is, provider shouldn't register the algorithm.
    • Constructor Detail

      • RandomBitsSupplier

        public RandomBitsSupplier()
    • Method Detail

      • getRandomBits

        public static byte[] getRandomBits(int numBytes)
        The method returns byte array of requested length provided service is available. ProviderException gets thrown otherwise.
        Parameters:
        numBytes - - length of bytes requested
        Returns:
        byte array
        Throws:
        InvalidArgumentException - - if numBytes <= 0


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