org.spongycastle.util.Arrays.concatenate()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中org.spongycastle.util.Arrays.concatenate()方法的一些代码示例，展示了Arrays.concatenate()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Arrays.concatenate()方法的具体详情如下：
包路径：org.spongycastle.util.Arrays
类名称：Arrays
方法名：concatenate

Arrays.concatenate介绍

暂无

代码示例

代码示例来源：origin: ethereum/ethereumj

/**
 * Pack nibbles to binary
 *
 * @param nibbles sequence. may have a terminator
 * @return hex-encoded byte array
 */
public static byte[] packNibbles(byte[] nibbles) {
  int terminator = 0;
  if (nibbles[nibbles.length - 1] == TERMINATOR) {
    terminator = 1;
    nibbles = copyOf(nibbles, nibbles.length - 1);
  }
  int oddlen = nibbles.length % 2;
  int flag = 2 * terminator + oddlen;
  if (oddlen != 0) {
    byte[] flags = new byte[]{(byte) flag};
    nibbles = concatenate(flags, nibbles);
  } else {
    byte[] flags = new byte[]{(byte) flag, 0};
    nibbles = concatenate(flags, nibbles);
  }
  ByteArrayOutputStream buffer = new ByteArrayOutputStream();
  for (int i = 0; i < nibbles.length; i += 2) {
    buffer.write(16 * nibbles[i] + nibbles[i + 1]);
  }
  return buffer.toByteArray();
}

代码示例来源：origin: ethereum/ethereumj

/**
 * Integer limitation goes up to 2^31-1 so length can never be bigger than MAX_ITEM_LENGTH
 */
public static byte[] encodeLength(int length, int offset) {
  if (length < SIZE_THRESHOLD) {
    byte firstByte = (byte) (length + offset);
    return new byte[]{firstByte};
  } else if (length < MAX_ITEM_LENGTH) {
    byte[] binaryLength;
    if (length > 0xFF)
      binaryLength = intToBytesNoLeadZeroes(length);
    else
      binaryLength = new byte[]{(byte) length};
    byte firstByte = (byte) (binaryLength.length + offset + SIZE_THRESHOLD - 1);
    return concatenate(new byte[]{firstByte}, binaryLength);
  } else {
    throw new RuntimeException("Input too long");
  }
}

代码示例来源：origin: ethereum/ethereumj

public byte[] calcPowValue() {
  // nonce bytes are expected in Little Endian order, reverting
  byte[] nonceReverted = Arrays.reverse(nonce);
  byte[] hashWithoutNonce = HashUtil.sha3(getEncodedWithoutNonce());
  byte[] seed = Arrays.concatenate(hashWithoutNonce, nonceReverted);
  byte[] seedHash = HashUtil.sha512(seed);
  byte[] concat = Arrays.concatenate(seedHash, mixHash);
  return HashUtil.sha3(concat);
}

代码示例来源：origin: ethereum/ethereumj

/**
 * Turn Object into its RLP encoded equivalent of a byte-array
 * Support for String, Integer, BigInteger and Lists of any of these types.
 *
 * @param input as object or List of objects
 * @return byte[] RLP encoded
 */
public static byte[] encode(Object input) {
  Value val = new Value(input);
  if (val.isList()) {
    List<Object> inputArray = val.asList();
    if (inputArray.isEmpty()) {
      return encodeLength(inputArray.size(), OFFSET_SHORT_LIST);
    }
    byte[] output = ByteUtil.EMPTY_BYTE_ARRAY;
    for (Object object : inputArray) {
      output = concatenate(output, encode(object));
    }
    byte[] prefix = encodeLength(output.length, OFFSET_SHORT_LIST);
    return concatenate(prefix, output);
  } else {
    byte[] inputAsBytes = toBytes(input);
    if (inputAsBytes.length == 1 && (inputAsBytes[0] & 0xff) <= 0x80) {
      return inputAsBytes;
    } else {
      byte[] firstByte = encodeLength(inputAsBytes.length, OFFSET_SHORT_ITEM);
      return concatenate(firstByte, inputAsBytes);
    }
  }
}

代码示例来源：origin: ethereum/ethereumj

concat = Arrays.concatenate(hash, testNonce);
byte[] result = sha3(concat);
if (FastByteComparisons.compareTo(result, 0, 32, target, 0, 32) < 0) {

代码示例来源：origin: com.madgag.spongycastle/core

private byte[] concatenate(byte[] header, byte[] id1, byte[] id2, byte[] ed1, byte[] ed2, byte[] text)
  {
    return Arrays.concatenate(Arrays.concatenate(header, id1, id2), Arrays.concatenate(ed1, ed2, text));
  }
}

代码示例来源：origin: com.madgag.spongycastle/bcpg-jdk15on

public SignatureTarget(
  boolean    critical,
  int        publicKeyAlgorithm,
  int        hashAlgorithm,
  byte[]     hashData)
{
  super(SignatureSubpacketTags.SIGNATURE_TARGET, critical, false, Arrays.concatenate(new byte[] { (byte)publicKeyAlgorithm, (byte)hashAlgorithm }, hashData));
}

代码示例来源：origin: com.madgag.spongycastle/prov

static String generateKeyFingerprint(BigInteger modulus, BigInteger publicExponent)
  {
    return new Fingerprint(Arrays.concatenate(modulus.toByteArray(), publicExponent.toByteArray())).toString();
  }
}

代码示例来源：origin: com.madgag.spongycastle/bctls-jdk15on

static void sendSignatureInput(TlsContext context, DigestInputBuffer buf, OutputStream output)
  throws IOException
{
  SecurityParameters securityParameters = context.getSecurityParameters();
  // NOTE: The implicit copy here is intended (and important)
  output.write(Arrays.concatenate(securityParameters.clientRandom, securityParameters.serverRandom));
  buf.copyTo(output);
  output.close();
}

代码示例来源：origin: com.madgag.spongycastle/prov

private static byte[] generateDefaultPersonalizationString(byte[] seed)
{
  return Arrays.concatenate(Strings.toByteArray("Default"), seed,
    Pack.longToBigEndian(Thread.currentThread().getId()), Pack.longToBigEndian(System.currentTimeMillis()));
}

代码示例来源：origin: com.madgag.spongycastle/prov

private static byte[] generateNonceIVPersonalizationString(byte[] seed)
{
  return Arrays.concatenate(Strings.toByteArray("Nonce"), seed,
    Pack.longToLittleEndian(Thread.currentThread().getId()), Pack.longToLittleEndian(System.currentTimeMillis()));
}

代码示例来源：origin: com.madgag.spongycastle/core

/**
 * Reseed the DRBG.
 *
 * @param additionalInput additional input to be added to the DRBG in this step.
 */
public void reseed(byte[] additionalInput)
{
  byte[] entropy = getEntropy();
  byte[] seedMaterial = Arrays.concatenate(entropy, additionalInput);
  hmac_DRBG_Update(seedMaterial);
  _reseedCounter = 1;
}

代码示例来源：origin: com.madgag.spongycastle/prov

static String generateKeyFingerprint(BigInteger y, DSAParams params)
  {
    return new Fingerprint(Arrays.concatenate(y.toByteArray(), params.getP().toByteArray(), params.getQ().toByteArray(), params.getG().toByteArray())).toString();
  }
}

代码示例来源：origin: com.madgag.spongycastle/core

private void CTR_DRBG_Instantiate_algorithm(byte[] entropy, byte[] nonce,
    byte[] personalisationString)
{
  byte[] seedMaterial = Arrays.concatenate(entropy, nonce, personalisationString);
  byte[] seed = Block_Cipher_df(seedMaterial, _seedLength);
  int outlen = _engine.getBlockSize();
  _Key = new byte[(_keySizeInBits + 7) / 8];
  _V = new byte[outlen];
   // _Key & _V are modified by this call
  CTR_DRBG_Update(seed, _Key, _V); 
  _reseedCounter = 1;
}

代码示例来源：origin: com.madgag.spongycastle/core

private void CTR_DRBG_Reseed_algorithm(byte[] additionalInput)
{
  byte[] seedMaterial = Arrays.concatenate(getEntropy(), additionalInput);
  seedMaterial = Block_Cipher_df(seedMaterial, _seedLength);
  CTR_DRBG_Update(seedMaterial, _Key, _V);
  _reseedCounter = 1;
}

代码示例来源：origin: com.madgag.spongycastle/bcpkix-jdk15on

public byte[] getEncoded()
  throws IOException
{
  return Arrays.concatenate(certificateHolder.getEncoded(), trustBlock.toASN1Sequence().getEncoded());
}

代码示例来源：origin: com.madgag.spongycastle/pkix

public byte[] getEncoded()
  throws IOException
{
  return Arrays.concatenate(certificateHolder.getEncoded(), trustBlock.toASN1Sequence().getEncoded());
}

代码示例来源：origin: com.madgag.spongycastle/prov

private byte[] PRF(TLSKeyMaterialSpec parameters, Mac prf)
  {
    byte[] label = Strings.toByteArray(parameters.getLabel());
    byte[] labelSeed = Arrays.concatenate(label, parameters.getSeed());
    byte[] secret = parameters.getSecret();
    byte[] buf = new byte[parameters.getLength()];
    hmac_hash(prf, secret, labelSeed, buf);
    return buf;
  }
}

代码示例来源：origin: com.madgag.spongycastle/bctls-jdk15on

public static byte[] calculateKeyBlock(TlsCryptoParameters cryptoParams, int length)
{
  SecurityParameters securityParameters = cryptoParams.getSecurityParameters();
  TlsSecret master_secret = securityParameters.getMasterSecret();
  byte[] seed = Arrays.concatenate(securityParameters.getServerRandom(), securityParameters.getClientRandom());
  return PRF(cryptoParams, master_secret, ExporterLabel.key_expansion, seed, length).extract();
}

代码示例来源：origin: com.madgag.spongycastle/prov

public static String generateKeyFingerprint(ECPoint publicPoint, org.spongycastle.jce.spec.ECParameterSpec spec)
  {
    ECCurve curve = spec.getCurve();
    ECPoint g = spec.getG();

    if (curve != null)
    {
      return new Fingerprint(Arrays.concatenate(publicPoint.getEncoded(false), curve.getA().getEncoded(), curve.getB().getEncoded(), g.getEncoded(false))).toString();
    }

    return new Fingerprint(publicPoint.getEncoded(false)).toString();
  }
}

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