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A pure-java CIFS/SMB client library
There is a newer version: 2.1.10
/*
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package jcifs.smb;


import org.bouncycastle.util.encoders.Hex;


/**
 * Authenticator directly specifing the user's NT hash
 * 
 * @author mbechler
 *
 */
public class NtlmNtHashAuthenticator extends NtlmPasswordAuthenticator {

    private static final long serialVersionUID = 4328214169536360351L;
    private final byte[] ntHash;


    /**
     * Create username/password credentials with specified domain
     * 
     * @param domain
     * @param username
     * @param passwordHash
     *            NT password hash
     */
    public NtlmNtHashAuthenticator ( String domain, String username, byte[] passwordHash ) {
        super(domain, username, null, AuthenticationType.USER);
        if ( passwordHash == null || passwordHash.length != 16 ) {
            throw new IllegalArgumentException("Password hash must be provided, expected length 16 byte");
        }
        this.ntHash = passwordHash;
    }


    /**
     * Create username/password credentials with specified domain
     * 
     * @param domain
     * @param username
     * @param passwordHashHex
     *            NT password hash, hex encoded
     */
    public NtlmNtHashAuthenticator ( String domain, String username, String passwordHashHex ) {
        this(domain, username, Hex.decode(passwordHashHex));
    }


    private NtlmNtHashAuthenticator ( byte[] passwordHash ) {
        super();
        this.ntHash = passwordHash;
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.smb.NtlmPasswordAuthenticator#getNTHash()
     */
    @Override
    protected byte[] getNTHash () {
        return this.ntHash;
    }


    @Override
    public NtlmPasswordAuthenticator clone () {
        NtlmNtHashAuthenticator cloned = new NtlmNtHashAuthenticator(this.ntHash.clone());
        cloneInternal(cloned, this);
        return cloned;
    }
}