Java Code Examples for org.bouncycastle.crypto.Digest#getDigestSize()

public static String sha3(byte[] bytes, int bitLength) {
    Digest digest = new SHA3Digest(bitLength);
    digest.update(bytes, 0, bytes.length);
    byte[] rsData = new byte[digest.getDigestSize()];
    digest.doFinal(rsData, 0);
    return HexUtil.encode(rsData);
}
 

public static byte[] sha3bytes(byte[] bytes, int bitLength) {
    Digest digest = new SHA3Digest(bitLength);
    digest.update(bytes, 0, bytes.length);
    byte[] rsData = new byte[digest.getDigestSize()];
    digest.doFinal(rsData, 0);
    return rsData;
}
 

public byte[] apply(ECPoint S, byte[] fingerprint) throws IOException {
    // RFC Sections 7, 8
    byte[] ZB = S.getAffineXCoord().getEncoded();

    Digest digest = digestFactory.get();

    digest.update((byte) 0x00);                                     // 00
    digest.update((byte) 0x00);                                     // 00
    digest.update((byte) 0x00);                                     // 00 
    digest.update((byte) 0x01);                                     // 01 
    digest.update(ZB, 0, ZB.length);                                // ZB

    // Params
    digest.update(formattedOid, 0, formattedOid.length);            // curve_OID_len || curve_OID 
    digest.update(publicKeyAlgID);                                  // public_key_alg_ID
    digest.update((byte) 0x03);                                     // 03
    digest.update((byte) 0x01);                                     // 01
    digest.update(kdfHashID);                                       // KDF_hash_ID
    digest.update(symAlgID);                                        // KEK_alg_ID for AESKeyWrap
    digest.update(ANONYMOUS_SENDER, 0, ANONYMOUS_SENDER.length);    // "Anonymous Sender    "
    digest.update(fingerprint, 0, fingerprint.length);              // recipient_fingerprint

    byte[] hash = new byte[digest.getDigestSize()];
    digest.doFinal(hash, 0);
    return hash;
}
 

@Override
public Object apply(WarpScriptStack stack) throws WarpScriptException {
  Object o = stack.pop();

  if (!(o instanceof byte[])) {
    throw new WarpScriptException(getName() + " operates on a byte array.");
  }

  byte[] bytes = (byte[]) o;

  try {
    Digest digest = (Digest) digestAlgo.newInstance();

    byte[] digestOctets = new byte[digest.getDigestSize()];

    digest.update(bytes, 0, bytes.length);

    digest.doFinal(digestOctets, 0);

    stack.push(digestOctets);

    return stack;
  } catch (Exception exp) {
    throw new WarpScriptException(getName() + " unable to instantiate message digest.", exp);
  }
}
 

@Test
public void test() {
    byte[] bytes = HexUtil.decode("92d1552a53f2b526895542131bc768eae406ece0b8f5437631d5b0cc750b89e6");
    Digest digest = new SHA512Digest();
    digest.update(bytes, 0, bytes.length);
    byte[] rsData = new byte[digest.getDigestSize()];
    digest.doFinal(rsData, 0);
    int[] result = uint8Array(rsData);
    System.out.println(HexUtil.encode(rsData));
    System.out.println(Arrays.toString(result));
    // sha512 hex string: fc72ef919a913dd93d4d83215c0db7a9895c82aee1987c2cefdf1911caee2a154039be04f02552cf6870f3aa0ada43af8c02b3d20e5db90c5ae2ea146f6824ab
}
 

public static void bcSHA224()
{
	
	Digest digest = new SHA224Digest();
	digest.update(src.getBytes(), 0, src.getBytes().length );
	byte[] sha224Bytes = new byte[digest.getDigestSize()];
	digest.doFinal(sha224Bytes, 0);
	System.out.println("bc sha-224:" + org.bouncycastle.util.encoders.Hex.toHexString(sha224Bytes));		
}
 

public static void bcSHA1()
{
	
	Digest digest = new SHA1Digest();
	digest.update(src.getBytes(), 0, src.getBytes().length );
	byte[] sha1Bytes = new byte[digest.getDigestSize()];
	digest.doFinal(sha1Bytes, 0);
	System.out.println("bc sha-1:" + org.bouncycastle.util.encoders.Hex.toHexString(sha1Bytes));		
}
 

static byte[] id(byte[] data) {
    // SHA256 truncated to 20 bytes. 
    Digest digest = new SHA256Digest();
    byte[] out = new byte[digest.getDigestSize()];

    digest.update(data, 0, data.length);
    digest.doFinal(out, 0);

    return Arrays.copyOf(out, 20);
}
 

static byte[] hash(Digest digest, byte[]... bytes) {
    for (byte[] b : bytes) {
        digest.update(b, 0, b.length);
    }

    byte[] output = new byte[digest.getDigestSize()];
    digest.doFinal(output, 0);
    return output;
}
 

public static byte[] hash(HashAlgo hashAlgo, byte[]... datas) {
  Args.notNull(hashAlgo, "hashAlgo");
  Args.notNull(datas, "datas");

  if (!MDS_MAP.containsKey(hashAlgo)) {
    throw new IllegalArgumentException("unknown hash algo " + hashAlgo);
  }

  ConcurrentBag<ConcurrentBagEntry<Digest>> mds = MDS_MAP.get(hashAlgo);

  ConcurrentBagEntry<Digest> md0 = null;
  for (int i = 0; i < 3; i++) {
    try {
      md0 = mds.borrow(10, TimeUnit.SECONDS);
      break;
    } catch (InterruptedException ex) { // CHECKSTYLE:SKIP
    }
  }

  if (md0 == null) {
    throw new RuntimeOperatorException("could not get idle MessageDigest");
  }

  try {
    Digest md = md0.value();
    md.reset();
    for (byte[] data : datas) {
      if (data != null && data.length > 0) {
        md.update(data, 0, data.length);
      }
    }
    byte[] bytes = new byte[md.getDigestSize()];
    md.doFinal(bytes, 0);
    return bytes;
  } finally {
    mds.requite(md0);
  }
}
 

private HMac(
    Digest digest,
    int    byteLength)
{
    this.digest = digest;
    digestSize = digest.getDigestSize();

    this.blockLength = byteLength;

    inputPad = new byte[blockLength];
    outputPad = new byte[blockLength];
}
 

@Override
public byte[] hash(byte[] input) {
    Digest digest = getHashDigest();
    byte[] retValue = new byte[digest.getDigestSize()];
    digest.update(input, 0, input.length);
    digest.doFinal(retValue, 0);
    return retValue;
}
 

public static byte[] hash(HashAlgo hashAlgo, byte[] data, int offset, int len) {
  Args.notNull(hashAlgo, "hashAlgo");
  Args.notNull(data, "data");

  if (data.length - offset < len) {
    throw new IndexOutOfBoundsException("data.length - offset < len");
  }

  if (!MDS_MAP.containsKey(hashAlgo)) {
    throw new IllegalArgumentException("unknown hash algo " + hashAlgo);
  }

  ConcurrentBag<ConcurrentBagEntry<Digest>> mds = MDS_MAP.get(hashAlgo);

  ConcurrentBagEntry<Digest> md0 = null;
  for (int i = 0; i < 3; i++) {
    try {
      md0 = mds.borrow(10, TimeUnit.SECONDS);
      break;
    } catch (InterruptedException ex) { // CHECKSTYLE:SKIP
    }
  }

  if (md0 == null) {
    throw new RuntimeOperatorException("could not get idle MessageDigest");
  }

  try {
    Digest md = md0.value();
    md.reset();
    md.update(data, offset, len);
    byte[] bytes = new byte[md.getDigestSize()];
    md.doFinal(bytes, 0);
    return bytes;
  } finally {
    mds.requite(md0);
  }
}
 

public static byte[] keccakBytes(byte[] bytes, int bitLength) {
    Digest digest = new KeccakDigest(bitLength);
    digest.update(bytes, 0, bytes.length);
    byte[] rsData = new byte[digest.getDigestSize()];
    digest.doFinal(rsData, 0);
    return rsData;
}
 

public static String keccak(byte[] bytes, int bitLength) {
    Digest digest = new KeccakDigest(bitLength);
    digest.update(bytes, 0, bytes.length);
    byte[] rsData = new byte[digest.getDigestSize()];
    digest.doFinal(rsData, 0);
    return HexUtil.encode(rsData);
}
 

public static byte[] sha512(byte[] bytes) {
    Digest digest = new SHA512Digest();
    digest.update(bytes, 0, bytes.length);
    byte[] rsData = new byte[digest.getDigestSize()];
    digest.doFinal(rsData, 0);
    return rsData;
}
 

/**
 * @param data - message to hash
 * @return - reipmd160 hash of the message
 */
public static byte[] ripemd160(byte[] data) {
    Digest digest = new RIPEMD160Digest();
    if (data != null) {
        byte[] resBuf = new byte[digest.getDigestSize()];
        digest.update(data, 0, data.length);
        digest.doFinal(resBuf, 0);
        return resBuf;
    }
    throw new NullPointerException("Can't hash a NULL value");
}
 

@Override
public byte[] modifyBytes(byte[] input) {
    // Get the selected ByteModifier and use the modifyBytes method from their to update input.
    Digest digest = null;
    byte[] output;

    if (algoComboBox.getSelectedItem().equals("MD2")) {
        digest = new MD2Digest();
    } else if (algoComboBox.getSelectedItem().equals("MD4")) {
        digest = new MD4Digest();
    } else if (algoComboBox.getSelectedItem().equals("MD5")) {
        digest = new MD5Digest();
    } else if (algoComboBox.getSelectedItem().equals("Keccak")) {
        digest = new KeccakDigest(Integer.parseInt((String)keccakComboBox.getSelectedItem()));
    } else if (algoComboBox.getSelectedItem().equals("RIPEMD128")) {
        digest = new RIPEMD128Digest();
    } else if (algoComboBox.getSelectedItem().equals("RIPEMD160")) {
        digest = new RIPEMD160Digest();
    } else if (algoComboBox.getSelectedItem().equals("RIPEMD256")) {
        digest = new RIPEMD256Digest();
    }  else if (algoComboBox.getSelectedItem().equals("RIPEMD320")) {
        digest = new RIPEMD320Digest();
    } else if (algoComboBox.getSelectedItem().equals("SHA1")) {
        digest = new SHA1Digest();
    } else if (algoComboBox.getSelectedItem().equals("SHA224")) {
        digest = new SHA224Digest();
    } else if (algoComboBox.getSelectedItem().equals("SHA256")) {
        digest = new SHA256Digest();
    } else if (algoComboBox.getSelectedItem().equals("SHA384")) {
        digest = new SHA384Digest();
    } else if (algoComboBox.getSelectedItem().equals("SHA512")) {
        digest = new SHA512Digest();
    } else if (algoComboBox.getSelectedItem().equals("SHA3")) {
        digest = new SHA3Digest(Integer.parseInt((String)sha3ComboBox.getSelectedItem()));
    } else if (algoComboBox.getSelectedItem().equals("SHAKE")) {
        digest = new SHAKEDigest(Integer.parseInt((String)shakeComboBox.getSelectedItem()));
    } else if (algoComboBox.getSelectedItem().equals("SM3")) {
        digest = new SM3Digest();
    } else if (algoComboBox.getSelectedItem().equals("Tiger")) {
        digest = new TigerDigest();
    } else if (algoComboBox.getSelectedItem().equals("GOST3411")) {
        digest = new GOST3411Digest();
    } else if (algoComboBox.getSelectedItem().equals("Whirlpool")) {
        digest = new WhirlpoolDigest();
    } else {
        throw new IllegalArgumentException("No such digest");
    }
    output = new byte[digest.getDigestSize()];

    // KeccakDigest	224, 256, 288, 384, 512
    // SHA3Digest	224, 256, 384, 512
    // SHAKEDigest	128, 256

    digest.reset();
    digest.update(input, 0, input.length);
    digest.doFinal(output, 0);
    return output;
}
 

static byte[] signature(Digest digest) {
    byte[] out = new byte[digest.getDigestSize()];
    digest.doFinal(out, 0);
    return out;
}
 

/**
 * Generate hash of the given input using the given Digest.
 *
 * @param input  input data.
 * @param digest the digest to use for hashing
 * @return hashed data.
 */
public static byte[] hash(byte[] input, Digest digest) {
    byte[] retValue = new byte[digest.getDigestSize()];
    digest.update(input, 0, input.length);
    digest.doFinal(retValue, 0);
    return retValue;
}