Package com.goterl.lazysodium.interfaces

Interface Random

All Known Implementing Classes:
LazySodium, LazySodiumJava
public interface Random

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Interface
    Description
    static class 
    Random.RandomChecker
     

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final long
    BYTES_MAX
     
    static final int
    SEEDBYTES
     

  • Method Summary

    Modifier and Type
    Method
    Description
    byte[]
    nonce(int size)
    Get a random number of bytes to use in a nonce.
    void
    randomBytesBuf(byte[] buff, int size)
    Fill a buffer with random bytes.
    byte[]
    randomBytesBuf(int size)
    Get a random number of bytes.
    void
    randomBytesDeterministic(byte[] buff, int size, byte[] seed)
    Fill a buffer with deterministically random bytes given a seed.
    byte[]
    randomBytesDeterministic(int size, byte[] seed)
    Get deterministically random bytes given a seed.
    long
    randomBytesRandom()
    Return a unsigned int byte 0 and 0xffffffff included.
    long
    randomBytesUniform(int upperBound)
    Returns an unpredictable value between 0 and upperBound (excluded).

  • Field Details

  • Method Details

    • randomBytesRandom

      long randomBytesRandom()
      Return a unsigned int byte 0 and 0xffffffff included.
      Returns:
      A random integer.

    • randomBytesUniform

      long randomBytesUniform(int upperBound)
      Returns an unpredictable value between 0 and upperBound (excluded). Unlike randombytes_random() % upper_bound, it guarantees a uniform distribution of the possible output values even when upper_bound is not a power of 2. Note that an upper_bound less than 2 leaves only a single element to be chosen, namely 0.
      Parameters:
      upperBound - Upper bound (exclusive)
      Returns:
      A uniformly random unsigned int.

    • randomBytesBuf

      void randomBytesBuf(byte[] buff, int size)
      Fill a buffer with random bytes.
      Parameters:
      buff - Buffer to fill.
      size - The number of bytes in the array to fill with random bytes.

    • randomBytesBuf

      byte[] randomBytesBuf(int size)
      Get a random number of bytes.
      Parameters:
      size - The length of the byte array to return.
      Returns:
      Random byte array.

    • randomBytesDeterministic

      void randomBytesDeterministic(byte[] buff, int size, byte[] seed)
      Fill a buffer with deterministically random bytes given a seed.
      Parameters:
      buff - Buffer to fill
      size - The number of bytes in the array to fill with random bytes.
      seed - Seed to provide.

    • randomBytesDeterministic

      byte[] randomBytesDeterministic(int size, byte[] seed)
      Get deterministically random bytes given a seed.
      Parameters:
      size - Size of byte array to return.
      seed - Seed to provide.
      Returns:
      Deterministically random byte array.

    • nonce

      byte[] nonce(int size)
      Get a random number of bytes to use in a nonce.
      Parameters:
      size - The size of the byte array to return.
      Returns:
      Random nonce array.
      See Also: