}

    /**
     * @return the digest
     */
    @Override
    public final SMB1SigningDigest getDigest() {
        return this.digest;
    }

    /**
     * @param digest
     *            the digest to set
     */
    @Override
    public final void setDigest(final SMBSigningDigest digest) {
        this.digest = (SMB1SigningDigest) digest;
    }

    /**

            return 0;
        }

        @Override
        public void setDigest(SMBSigningDigest digest) {
            this.digest = digest;
        }

        @Override
        public SMBSigningDigest getDigest() {
            return digest;
        }

        @Override
        public void setResponse(CommonServerMessageBlockResponse msg) {

    }

    @Test
    @DisplayName("isSignatureSetupRequired depends on digest and negotiate flags")
    void testIsSignatureSetupRequired() throws Exception {
        SmbSessionImpl session = newSession();

        // Case 1: digest already set -> false
        SMBSigningDigest dg = mock(SMBSigningDigest.class);
        setField(session, "digest", dg);
        assertFalse(session.isSignatureSetupRequired());

            }

            // SMB 3.1.1 spec: Hash = Hash(PreviousHash || Message)
            digest.update(previousHash);
            digest.update(messageData);

            return digest.digest();
        } catch (NoSuchAlgorithmException e) {
            throw new CIFSException("Hash algorithm not available: " + hashAlgorithm, e);
        }
    }

    /**
     * Gets the name of a hash algorithm.
     *

 * [OkHttp AWS Signer](https://github.com/babbel/okhttp-aws-signer): AWS V4 signing algorithm for OkHttp requests
 * [okhttp-digest](https://github.com/rburgst/okhttp-digest): A digest authenticator for OkHttp.
 * [OkHttp Idling Resource](https://github.com/JakeWharton/okhttp-idling-resource): An Espresso IdlingResource for OkHttp.

        hmac.update(Strings.getUNIBytes(user.toUpperCase()));
        hmac.update(Strings.getUNIBytes(domain.toUpperCase()));
        hmac = Crypto.getHMACT64(hmac.digest());
        hmac.update(challenge);
        hmac.update(clientChallenge);
        hmac.digest(response, 0, 16);
        System.arraycopy(clientChallenge, 0, response, 16, 8);
        return response;
    }

    /**

        assertEquals(fid, SMBUtil.readInt2(dst, 0));
        // lastWriteTime is not written if digest is null, so the remaining bytes should be zero
        assertEquals(0, SMBUtil.readInt4(dst, 2));
    }

    /**
     * Test method for {@link jcifs.internal.smb1.com.SmbComClose#writeParameterWordsWireFormat(byte[], int)} with a signing digest.
     */
    @Test
    public void testWriteParameterWordsWireFormatWithDigest() {

 */

package jcifs.smb1.util;

import java.security.MessageDigest;

/**
 * Implements the MD4 message digest algorithm in Java.
 * <p>
 * <b>References:</b>
 * <ol>
 *   <li> Ronald L. Rivest,
 *        "<a href="http://www.roxen.com/rfc/rfc1320.html">
 *        The MD4 Message-Digest Algorithm</a>",
 *        IETF RFC-1320 (informational).
 * </ol>
 *
 * <p><b>$Revision: 1.2 $</b>
 * @author  Raif S. Naffah

    public Smb2SigningDigest getDigest() {
        return this.digest;
    }

    /**
     *
     * {@inheritDoc}
     *
     * @see jcifs.internal.CommonServerMessageBlock#setDigest(jcifs.internal.SMBSigningDigest)
     */
    @Override
    public void setDigest(final SMBSigningDigest digest) {
        this.digest = (Smb2SigningDigest) digest;
        if (this.next != null) {

    private static final int SIGNATURE_LENGTH = 16;
    private final Mac digest;
    private final ReentrantLock signingLock = new ReentrantLock();
    private byte[] signingKey;
    private final String algorithmName;
    private final java.security.Provider provider;
    private volatile boolean closed = false;

    /**
     * Constructs a SMB2 signing digest with the specified session key and dialect
     *
     * @param sessionKey