Example usage for com.google.common.hash Hasher putBytes

Introduction

In this page you can find the example usage for com.google.common.hash Hasher putBytes.

Prototype

@Override
    Hasher putBytes(byte[] bytes);

Source Link

Usage

From source file:org.gradle.api.internal.hash.DefaultFileHasher.java

private static Hasher createFileHasher() {
    Hasher hasher = Hashing.md5().newHasher();
    hasher.putBytes(SIGNATURE);
    return hasher;
}

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From source file:com.facebook.buck.hashing.StringHashing.java

/**
 * Encodes the string in UTF-8, then hashes the length of the encoded
 * UTF-8 bytes followed by the bytes themselves.
 *
 * Useful to ensure hash codes are different when multiple strings
 * are hashed in order ("foo" then "bar" should hash differently from "foobar").
 *///  ww  w  .j a va 2s.  c o m
public static void hashStringAndLength(Hasher hasher, String string) {
    byte[] utf8Bytes = string.getBytes(StandardCharsets.UTF_8);
    hasher.putInt(utf8Bytes.length);
    hasher.putBytes(utf8Bytes);
}

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From source file:org.locationtech.geogig.repository.IndexInfo.java

public static ObjectId getIndexId(String treeName, String attributeName) {
    final Hasher hasher = ObjectId.HASH_FUNCTION.newHasher();
    hasher.putBytes(treeName.getBytes(Charsets.UTF_8));
    hasher.putBytes(attributeName.getBytes(Charsets.UTF_8));
    return ObjectId.createNoClone(hasher.hash().asBytes());
}

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From source file:com.google.devtools.build.lib.worker.WorkerFilesHash.java

public static HashCode getWorkerFilesHash(Iterable<? extends ActionInput> toolFiles,
        ActionExecutionContext actionExecutionContext) throws IOException {
    Hasher hasher = Hashing.sha256().newHasher();
    for (ActionInput tool : toolFiles) {
        hasher.putString(tool.getExecPathString(), Charset.defaultCharset());
        hasher.putBytes(actionExecutionContext.getActionInputFileCache().getDigest(tool));
    }//from w  w w . j a  v  a 2 s  . co  m
    return hasher.hash();
}

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From source file:org.opendaylight.md.controller.topology.lldp.utils.LLDPDiscoveryUtils.java

/**
 * @param nodeConnectorId/* w  w  w .  ja v  a  2s  .c  o m*/
 * @return extra authenticator for lldp security
 * @throws NoSuchAlgorithmException
 */
public static byte[] getValueForLLDPPacketIntegrityEnsuring(final NodeConnectorId nodeConnectorId)
        throws NoSuchAlgorithmException {
    final String pureValue = nodeConnectorId + ManagementFactory.getRuntimeMXBean().getName();
    final byte[] pureBytes = pureValue.getBytes();
    HashFunction hashFunction = Hashing.md5();
    Hasher hasher = hashFunction.newHasher();
    HashCode hashedValue = hasher.putBytes(pureBytes).hash();
    return hashedValue.asBytes();
}

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From source file:org.opendaylight.openflowplugin.applications.topology.lldp.utils.LLDPDiscoveryUtils.java

/**
 * @param nodeConnectorId//  w  w w  .  j  av a 2 s  . c om
 * @return extra authenticator for lldp security
 * @throws NoSuchAlgorithmException
 */
public static byte[] getValueForLLDPPacketIntegrityEnsuring(final NodeConnectorId nodeConnectorId)
        throws NoSuchAlgorithmException {
    String finalKey;
    if (LLDPActivator.getLldpSecureKey() != null && !LLDPActivator.getLldpSecureKey().isEmpty()) {
        finalKey = LLDPActivator.getLldpSecureKey();
    } else {
        finalKey = ManagementFactory.getRuntimeMXBean().getName();
    }
    final String pureValue = nodeConnectorId + finalKey;

    final byte[] pureBytes = pureValue.getBytes();
    HashFunction hashFunction = Hashing.md5();
    Hasher hasher = hashFunction.newHasher();
    HashCode hashedValue = hasher.putBytes(pureBytes).hash();
    return hashedValue.asBytes();
}

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From source file:com.facebook.buck.parser.cache.impl.Fingerprinter.java

/**
 * Calculates a strong fingerprint.//from   www.  j a  v  a 2  s.  c o m
 *
 * @param fs the {@link ProjectFilesystem} that we use to calculate the strong fingerprint.
 * @param includes the list of included build files for which we calculate the strong fingerprint.
 * @param fileHashCache the {@link FileHashCache} object to use to get the content hash of the
 *     loaded files.
 * @return a strong fingerprint - {@link HashCode} that represent a unique hash value.
 * @throws IOException can throw if there is a problem getting the content of the main BUCK build
 *     spec or an included file.
 */
public static HashCode getStrongFingerprint(ProjectFilesystem fs, ImmutableSortedSet<String> includes,
        FileHashCache fileHashCache) throws IOException {
    Hasher hasher = Hashing.sha256().newHasher();

    for (String value : includes) {
        Path value_path = fs.getPath(value);
        hasher.putString(fs.relativize(value_path).toString(), StandardCharsets.UTF_8);
        hasher.putBytes(fileHashCache.get(value_path).asBytes());
    }

    return hasher.hash();
}

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From source file:com.facebook.buck.rules.Manifest.java

@VisibleForTesting
protected static HashCode hashSourcePathGroup(FileHashCache fileHashCache, SourcePathResolver resolver,
        ImmutableList<SourcePath> paths) throws IOException {
    if (paths.size() == 1) {
        return hashSourcePath(paths.asList().get(0), fileHashCache, resolver);
    }//w ww .j  av  a2s. c o  m
    Hasher hasher = Hashing.md5().newHasher();
    for (SourcePath path : paths) {
        hasher.putBytes(hashSourcePath(path, fileHashCache, resolver).asBytes());
    }
    return hasher.hash();
}

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From source file:com.facebook.buck.core.build.engine.manifest.Manifest.java

/** Hash the files pointed to by the source paths. */
@VisibleForTesting//from   ww w . j  a va2  s. c o m
static HashCode hashSourcePathGroup(FileHashCache fileHashCache, SourcePathResolver resolver,
        ImmutableList<SourcePath> paths) throws IOException {
    if (paths.size() == 1) {
        return hashSourcePath(paths.get(0), fileHashCache, resolver);
    }
    Hasher hasher = Hashing.md5().newHasher();
    for (SourcePath path : paths) {
        hasher.putBytes(hashSourcePath(path, fileHashCache, resolver).asBytes());
    }
    return hasher.hash();
}

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From source file:com.google.gerrit.server.change.FileContentUtil.java

private static String randSuffix() {
    // Produce a random suffix that is difficult (or nearly impossible)
    // for an attacker to guess in advance. This reduces the risk that
    // an attacker could upload a *.class file and have us send a ZIP
    // that can be invoked through an applet tag in the victim's browser.
    ////from ww w .j  a v  a  2  s. com
    Hasher h = Hashing.md5().newHasher();
    byte[] buf = new byte[8];

    NB.encodeInt64(buf, 0, TimeUtil.nowMs());
    h.putBytes(buf);

    rng.nextBytes(buf);
    h.putBytes(buf);

    return h.hash().toString();
}

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