Example usage for org.bouncycastle.crypto.prng SP800SecureRandom nextBytes

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.prng SP800SecureRandom nextBytes.

Prototype

public void nextBytes(byte[] bytes) 

Source Link

Usage

From source file:org.cryptacular.util.NonceUtil.java

License:Open Source License

/**
 * Generates a random IV according to NIST <a href="http://goo.gl/S9z8qF">
 * SP-800-63a</a>, appendix C, method 2 (pseudorandom), suitable for use with
 * any block cipher mode described in that standard.
 *
 * @param  prng  NIST SP800-63a approved pseudorandom number generator.
 * @param  blockSize  Cipher block size in bytes.
 *
 * @return  Cipher block size number of random bytes.
 *//*from  w  w  w  .  j  av  a  2s .  com*/
public static byte[] nist80063a(final SP800SecureRandom prng, final int blockSize) {
    prng.setSeed(System.nanoTime());

    final byte[] iv = new byte[blockSize];
    prng.nextBytes(iv);
    return iv;
}

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