Example usage for org.bouncycastle.crypto.digests KeccakDigest getDigestSize

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.digests KeccakDigest getDigestSize.

Prototype

public int getDigestSize() 

Source Link

Usage

From source file:org.ethereum.crypto.Keccak256Helper.java

License:Open Source License

private static byte[] keccak256(byte[] message, int start, int length, KeccakDigest digest,
        boolean bouncyencoder) {
    byte[] hash = new byte[digest.getDigestSize()];

    if (message.length != 0) {
        digest.update(message, start, length);
    }/*from ww w  .j  a v  a  2  s .c  om*/
    digest.doFinal(hash, 0);
    return hash;
}

---

From source file:org.ethereum.crypto.Keccak256Helper.java

License:Open Source License

private static byte[] doKeccak256(byte[] message, KeccakDigest digest, boolean bouncyencoder) {
    byte[] hash = new byte[digest.getDigestSize()];

    if (message.length != 0) {
        digest.update(message, 0, message.length);
    }//from www  .j  av a 2s. co  m
    digest.doFinal(hash, 0);
    return hash;
}

---

From source file:org.ethereum.crypto.Keccak256Helper.java

License:Open Source License

private static byte[] doKeccak256(byte[] m1, byte[] m2, KeccakDigest digest, boolean bouncyencoder) {
    byte[] hash = new byte[digest.getDigestSize()];
    digest.update(m1, 0, m1.length);/*from  w ww  .j a va 2s .co  m*/
    digest.update(m2, 0, m2.length);

    digest.doFinal(hash, 0);
    return hash;
}

---

From source file:org.ethereum.net.rlpx.FrameCodec.java

License:Open Source License

private byte[] updateMac(KeccakDigest mac, byte[] seed, int offset, byte[] out, int outOffset, boolean egress)
        throws IOException {
    byte[] aesBlock = new byte[mac.getDigestSize()];
    doSum(mac, aesBlock);//from  www .  jav a2 s .  c  o m
    makeMacCipher().processBlock(aesBlock, 0, aesBlock, 0);
    // Note that although the mac digest size is 32 bytes, we only use 16 bytes in the computation
    int length = 16;
    for (int i = 0; i < length; i++) {
        aesBlock[i] ^= seed[i + offset];
    }
    mac.update(aesBlock, 0, length);
    byte[] result = new byte[mac.getDigestSize()];
    doSum(mac, result);
    if (egress) {
        System.arraycopy(result, 0, out, outOffset, length);
    } else {
        for (int i = 0; i < length; i++) {
            if (out[i + outOffset] != result[i]) {
                throw new IOException("MAC mismatch");
            }
        }
    }
    return result;
}

---

From source file:uk.co.platosys.dinigma.Digester.java

License:GNU General Public License

/**Takes a byte array and returns a string which is
 * the Base64 encoded version the digest.
 * This uses SHA3-512 as the digest algorithm.
 *
 * *//*from w ww . jav a2s  . c  om*/
public static String digest(byte[] bytes) throws MinigmaException {
    try {
        KeccakDigest digest = new SHA3Digest(512);
        for (byte byt : bytes) {
            digest.update(byt);
        }
        byte[] digested = new byte[digest.getDigestSize()];
        digest.doFinal(digested, 0);
        return (MinigmaUtils.encode(digested));
    } catch (Exception e) {

        throw new MinigmaException("error making digest", e);
    }
}

---