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

Introduction

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

Prototype

public void update(byte[] message, int offset, int len) 

Source Link

Document

update the message digest with a block of bytes.

Usage

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);/*from  w  w  w  .  ja  v  a2s .c  om*/
    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);
    }//from   w ww.  j a va2s .c  om

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

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