SHA1PasswordStorageScheme.java revision ea1068c292e9b341af6d6b563cd8988a96be20a9
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at legal-notices/CDDLv1_0.txt.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information:
* Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
*
* Copyright 2006-2008 Sun Microsystems, Inc.
* Portions Copyright 2013-2015 ForgeRock AS.
*/
/**
* This class defines a Directory Server password storage scheme based on the
* SHA-1 algorithm defined in FIPS 180-1. This is a one-way digest algorithm
* so there is no way to retrieve the original clear-text version of the
* password from the hashed value (although this means that it is not suitable
* for things that need the clear-text password like DIGEST-MD5). This
* implementation does not perform any salting, which means that it is more
* vulnerable to dictionary attacks than salted variants.
*/
public class SHA1PasswordStorageScheme
{
/**
* The fully-qualified name of this class.
*/
private static final String CLASS_NAME =
"org.opends.server.extensions.SHA1PasswordStorageScheme";
// The message digest that will actually be used to generate the SHA-1 hashes.
private MessageDigest messageDigest;
// The lock used to provide threadsafe access to the message digest.
private Object digestLock;
/**
* Creates a new instance of this password storage scheme. Note that no
* initialization should be performed here, as all initialization should be
* done in the <CODE>initializePasswordStorageScheme</CODE> method.
*/
public SHA1PasswordStorageScheme()
{
super();
}
/**
* {@inheritDoc}
*/
public void initializePasswordStorageScheme(
{
try
{
}
catch (Exception e)
{
logger.traceException(e);
throw new InitializationException(message, e);
}
digestLock = new Object();
}
/**
* {@inheritDoc}
*/
public String getStorageSchemeName()
{
return STORAGE_SCHEME_NAME_SHA_1;
}
/**
* {@inheritDoc}
*/
throws DirectoryException
{
byte[] digestBytes;
byte[] plaintextBytes = null;
synchronized (digestLock)
{
try
{
// TODO: Can we avoid this copy?
}
catch (Exception e)
{
logger.traceException(e);
message, e);
}
finally
{
if (plaintextBytes != null)
}
}
}
/**
* {@inheritDoc}
*/
throws DirectoryException
{
// TODO: Can we avoid this copy?
byte[] plaintextBytes = null;
byte[] digestBytes;
synchronized (digestLock)
{
try
{
}
catch (Exception e)
{
logger.traceException(e);
message, e);
}
finally
{
if (plaintextBytes != null)
}
}
}
/**
* {@inheritDoc}
*/
{
// TODO: Can we avoid this copy?
byte[] plaintextPasswordBytes = null;
synchronized (digestLock)
{
try
{
}
catch (Exception e)
{
logger.traceException(e);
return false;
}
finally
{
if (plaintextPasswordBytes != null)
}
}
try
{
}
catch (Exception e)
{
logger.traceException(e);
return false;
}
}
/**
* {@inheritDoc}
*/
public boolean supportsAuthPasswordSyntax()
{
// This storage scheme does not support the authentication password syntax.
return false;
}
/**
* {@inheritDoc}
*/
throws DirectoryException
{
}
/**
* {@inheritDoc}
*/
{
// This storage scheme does not support the authentication password syntax.
return false;
}
/**
* {@inheritDoc}
*/
public boolean isReversible()
{
return false;
}
/**
* {@inheritDoc}
*/
throws DirectoryException
{
}
/**
* {@inheritDoc}
*/
throws DirectoryException
{
}
/**
* {@inheritDoc}
*/
public boolean isStorageSchemeSecure()
{
// SHA-1 should be considered secure.
return true;
}
}