com.jcraft.jsch

Interface Random

public interface Random

A random number generator.

The library used an object (or in fact, multiple ones in different places) implementing this interface to generate random numbers. These are used for several purposes:

• to create key pairs
• To salt the known hosts entries in the hashed format
• For random padding of a packet before encrypting
• For the random session cookie

The library will choose the implementation class by the configuration option random, and instantiate it using the no-argument constructor.

The library includes a default implementation, based on a new SecureRandom().

An application might implement this interface to provide an alternative random number generator, maybe based on some hardware device.

Method Summary

Modifier and Type	Method and Description
void	fill(byte[] foo, int start, int len) Fills a segment of a byte array with random bits.

Method Detail

fill

void fill(byte[] foo,
          int start,
          int len)

Fills a segment of a byte array with random bits.

Parameters:

foo - the array to put the random data into.

start - the position in the array from where on the random data should be put.

len - the length of the segment to be filled with random data, in bytes. There will be 8 * len random bits generated.