Example usage for org.bouncycastle.crypto.digests GeneralDigest reset

Introduction

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

Prototype

public void reset() 

Source Link

Usage

From source file:com.stg.crypto.IODigestUtility.java

License:Open Source License

/**
 * Wraps the given {@link InputStream} against a digest
 * @param is input stream// ww w  .  j av  a 2  s .c o m
 * @return input stream
 */
public static DigestInputStream wrapDigestInputStream(GeneralDigest digest, InputStream is) {
    digest.reset();
    return new DigestInputStream(is, digest);
}

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From source file:com.stg.crypto.IODigestUtility.java

License:Open Source License

/**
 * Wraps the given {@link OutputStream} against a digest.
 * /*from   w  w w.  j a  v a  2 s.c  o m*/
 * @param os output stream to be wrapped.
 * @return output stream.
 */
public static DigestOutputStream wrapDigestOutputStream(GeneralDigest digest, OutputStream os) {
    digest.reset();
    return new DigestOutputStream(os, digest);
}

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From source file:org.bunkr.cli.commands.HashCommand.java

License:Open Source License

private byte[] calculateHash(ArchiveInfoContext context, FileInventoryItem target, String algorithm,
        boolean showProgress) throws IOException, CLIException {
    ProgressBar pb = new ProgressBar(120, target.getActualSize(), "Calculating hash: ");
    pb.setEnabled(showProgress);//w ww . ja va 2 s. c  o m
    pb.startFresh();
    GeneralDigest digest = getDigest(algorithm);
    digest.reset();
    try (MultilayeredInputStream ms = new MultilayeredInputStream(context, target)) {
        byte[] buffer = new byte[(int) Units.MEBIBYTE];
        int n;
        while ((n = ms.read(buffer)) != -1) {
            digest.update(buffer, 0, n);
            pb.inc(n);
        }
        Arrays.fill(buffer, (byte) 0);
    }
    pb.finish();

    int length = digest.getDigestSize();
    byte[] buffer = new byte[length];
    digest.doFinal(buffer, 0);

    return buffer;
}

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