Java 类org.bouncycastle.crypto.prng.drbg.HashSP800DRBG 实例源码

/**
 * Base constructor.
 *
 * @param size the number of messages on the board we are issuing challenges on.
 * @param stepNo the number of the step in the shuffling process.
 * @param seed a random seed for creating index numbers to challenge on - must be at least 55 bytes.
 */
public SeededChallenger(Integer size, Integer stepNo, byte[] seed)
{
    this.counter = 0;
    this.startIndex = 0;

    this.bitSet = buildBitSet(size, new HashSP800DRBG(new SHA256Digest(), 256, new SingleEntropySourceProvider(seed).get(440), null, null));
    this.isMirror = (((seed[seed.length - 1] & 0xff) + stepNo) & 0x01) == 0;
    this.max = (isMirror) ? (size - (size / 2)) : (size / 2);
}

public SP80090DRBG get(EntropySource entropySource)
{
    return new HashSP800DRBG(digest, securityStrength, entropySource, personalizationString, nonce);
}

public SP80090DRBG get(EntropySource entropySource)
{
    return new HashSP800DRBG(digest, securityStrength, entropySource, personalizationString, nonce);
}

public SP80090DRBG get(EntropySource entropySource)
{
    return new HashSP800DRBG(digest, securityStrength, entropySource, personalizationString, nonce);
}

public SP80090DRBG get(EntropySource entropySource)
{
    return new HashSP800DRBG(digest, securityStrength, entropySource, personalizationString, nonce);
}

public SP80090DRBG get(EntropySource entropySource)
{
    return new HashSP800DRBG(digest, securityStrength, entropySource, personalizationString, nonce);
}

public SP80090DRBG get(EntropySource entropySource)
{
    return new HashSP800DRBG(digest, securityStrength, entropySource, personalizationString, nonce);
}

public SP80090DRBG get(EntropySource entropySource)
{
    return new HashSP800DRBG(digest, securityStrength, entropySource, personalizationString, nonce);
}

public SP80090DRBG get(EntropySource entropySource)
{
    return new HashSP800DRBG(digest, securityStrength, entropySource, personalizationString, nonce);
}

public SP80090DRBG get(EntropySource entropySource)
{
    return new HashSP800DRBG(digest, securityStrength, entropySource, personalizationString, nonce);
}