Example usage for org.bouncycastle.crypto.digests Blake2bDigest Blake2bDigest

Introduction

In this page you can find the example usage for org.bouncycastle.crypto.digests Blake2bDigest Blake2bDigest.

Prototype

public Blake2bDigest(byte[] key) 

Source Link

Document

Blake2b for authentication ("Prefix-MAC mode").

Usage

From source file:com.distrimind.util.crypto.BCMac.java

License:Open Source License

public void init(org.bouncycastle.crypto.SymmetricSecretKey _key) throws NoSuchAlgorithmException {
    Digest d;//from   www  . j a v  a 2s . c o  m
    if (type.getCodeProviderForSignature() == CodeProvider.BC) {
        switch (type.getMessageDigestType()) {
        case BC_FIPS_SHA3_256:
            d = new SHA3Digest(256);
            break;
        case BC_FIPS_SHA3_384:
            d = new SHA3Digest(384);
            break;
        case BC_FIPS_SHA3_512:
            d = new SHA3Digest(512);
            break;
        case BC_BLAKE2B_160:
        case BC_BLAKE2B_256:
        case BC_BLAKE2B_384:
        case BC_BLAKE2B_512:
            d = new Blake2bDigest(type.getMessageDigestType().getDigestLengthInBits());
            break;
        default:
            throw new NoSuchAlgorithmException(type.toString());
        }
    } else {
        throw new NoSuchAlgorithmException(type.toString());
    }
    mac = new HMac(d);
    mac.init(new KeyParameter((secretKey = _key).getKeyBytes()));
    reset();

}

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From source file:org.apache.nifi.security.util.crypto.HashService.java

License:Apache License

private static byte[] blake2Hash(HashAlgorithm algorithm, byte[] value) {
    int digestLengthBytes = algorithm.getDigestBytesLength();
    Blake2bDigest blake2bDigest = new Blake2bDigest(digestLengthBytes * 8);
    byte[] rawHash = new byte[blake2bDigest.getDigestSize()];
    blake2bDigest.update(value, 0, value.length);
    blake2bDigest.doFinal(rawHash, 0);//ww w.j  ava  2s . c o  m
    return rawHash;
}

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From source file:org.apache.nifi.security.util.crypto.HashService.java

License:Apache License

private static byte[] blake2HashStreaming(HashAlgorithm algorithm, InputStream value) throws IOException {
    int digestLengthBytes = algorithm.getDigestBytesLength();
    Blake2bDigest blake2bDigest = new Blake2bDigest(digestLengthBytes * 8);
    byte[] rawHash = new byte[blake2bDigest.getDigestSize()];

    final byte[] buffer = new byte[BUFFER_SIZE];
    int read = value.read(buffer, 0, BUFFER_SIZE);

    while (read > -1) {
        blake2bDigest.update(buffer, 0, read);
        read = value.read(buffer, 0, BUFFER_SIZE);
    }//  ww  w  .  ja v a2s .  c o m

    blake2bDigest.doFinal(rawHash, 0);
    return rawHash;
}

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