Example usage for org.bouncycastle.crypto.prng RandomGenerator addSeedMaterial

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.prng RandomGenerator addSeedMaterial.

Prototype

void addSeedMaterial(long seed);

Source Link

Document

Add more seed material to the generator.

Usage

From source file:net.sourceforge.keepassj2me.keydb.KeydbDatabase.java

License:Open Source License

protected int getRandom() {
    byte[] id = new byte[4];
    RandomGenerator rnd = new DigestRandomGenerator(new SHA1Digest());
    rnd.addSeedMaterial(System.currentTimeMillis());
    rnd.nextBytes(id);/*w  w w. j  a  va  2s . co m*/
    return (id[0] | (id[1] << 8) | (id[2] << 16) | (id[3] << 24));
}

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From source file:net.sourceforge.keepassj2me.keydb.KeydbEntry.java

License:Open Source License

/**
 * Generate entry uuid//from w w w .j a  v  a 2 s .co  m
 * @return uuid
 */
public byte[] createUUID() {//FIXME: make sure this is unique
    byte[] uuid = new byte[16];
    RandomGenerator rnd = new DigestRandomGenerator(new SHA1Digest());
    rnd.addSeedMaterial(System.currentTimeMillis());
    rnd.nextBytes(uuid);
    return uuid;
}

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From source file:net.sourceforge.keepassj2me.keydb.KeydbHeader.java

License:Open Source License

/**
 * Reinitialize header//from   w  ww .  j  a va  2  s . c om
 * @param rounds
 */
public void reinitialize(int rounds) {
    numKeyEncRounds = rounds;
    //SecureRandom rnd = SecureRandom.getInstance("SHA1PRNG");
    //rnd.setSeed(System.currentTimeMillis());
    RandomGenerator rnd = new DigestRandomGenerator(new SHA1Digest());
    rnd.addSeedMaterial(System.currentTimeMillis());
    rnd.nextBytes(masterSeed);
    rnd.nextBytes(encryptionIV);
    rnd.nextBytes(masterSeed2);
}

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