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// --- BEGIN COPYRIGHT BLOCK ---
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package com.netscape.cms.profile.constraint;
import java.util.*;
import java.io.*;
import com.netscape.certsrv.base.*;
import com.netscape.certsrv.profile.*;
import com.netscape.certsrv.request.*;
import com.netscape.certsrv.property.*;
import com.netscape.certsrv.apps.*;
import com.netscape.certsrv.apps.CMS;
import com.netscape.cms.profile.common.*;
import com.netscape.cms.profile.def.*;
import netscape.security.x509.*;
import netscape.security.provider.*;
import java.security.interfaces.DSAParams;
import java.math.BigInteger;
/**
* This constraint is to check the key type and
* key length.
*
* @version $Revision: 14561 $, $Date: 2007-05-01 10:28:56 -0700 (Tue, 01 May 2007) $
*/
public class KeyConstraint extends EnrollConstraint {
public static final String CONFIG_KEY_TYPE = "keyType"; // (DSA, RSA)
public static final String CONFIG_KEY_MIN_LEN = "keyMinLength";
public static final String CONFIG_KEY_MAX_LEN = "keyMaxLength";
public KeyConstraint() {
super();
addConfigName(CONFIG_KEY_TYPE);
addConfigName(CONFIG_KEY_MIN_LEN);
addConfigName(CONFIG_KEY_MAX_LEN);
}
public void init(IProfile profile, IConfigStore config)
throws EProfileException {
super.init(profile, config);
}
public IDescriptor getConfigDescriptor(Locale locale, String name) {
if (name.equals(CONFIG_KEY_TYPE)) {
return new Descriptor(IDescriptor.CHOICE, "RSA,DSA,EC,-",
"-",
CMS.getUserMessage(locale, "CMS_PROFILE_KEY_TYPE"));
} else if (name.equals(CONFIG_KEY_MIN_LEN)) {
return new Descriptor(IDescriptor.INTEGER, null,
"512",
CMS.getUserMessage(locale, "CMS_PROFILE_KEY_MIN_LEN"));
} else if (name.equals(CONFIG_KEY_MAX_LEN)) {
return new Descriptor(IDescriptor.INTEGER, null,
"4096",
CMS.getUserMessage(locale, "CMS_PROFILE_KEY_MAX_LEN"));
}
return null;
}
/**
* Validates the request. The request is not modified
* during the validation.
*/
public void validate(IRequest request, X509CertInfo info)
throws ERejectException {
try {
CertificateX509Key infokey = (CertificateX509Key)
info.get(X509CertInfo.KEY);
X509Key key = (X509Key) infokey.get(CertificateX509Key.KEY);
String alg = key.getAlgorithmId().getName().toUpperCase();
String value = getConfig(CONFIG_KEY_TYPE);
if (!isOptional(value)) {
if (!alg.equals(value)) {
throw new ERejectException(
CMS.getUserMessage(
getLocale(request),
"CMS_PROFILE_KEY_TYPE_NOT_MATCHED",
value));
}
}
int keySize = 0;
if (alg.equals("RSA")) {
keySize = getRSAKeyLen(key);
} else if (alg.equals("DSA")) {
keySize = getDSAKeyLen(key);
} else if (alg.equals("EC")) {
keySize = getECKeyLen(key);
} else {
throw new ERejectException(
CMS.getUserMessage(
getLocale(request),
"CMS_PROFILE_INVALID_KEY_TYPE",
alg));
}
value = getConfig(CONFIG_KEY_MIN_LEN);
if (!isOptional(value)) {
if (keySize < Integer.parseInt(value)) {
throw new ERejectException(
CMS.getUserMessage(
getLocale(request),
"CMS_PROFILE_KEY_MIN_LEN_NOT_MATCHED",
value));
}
}
value = getConfig(CONFIG_KEY_MAX_LEN);
if (!isOptional(value)) {
if (keySize > Integer.parseInt(value)) {
throw new ERejectException(
CMS.getUserMessage(
getLocale(request),
"CMS_PROFILE_KEY_MAX_LEN_NOT_MATCHED",
value));
}
}
} catch (Exception e) {
if (e instanceof ERejectException) {
throw (ERejectException) e;
}
CMS.debug("KeyConstraint: " + e.toString());
throw new ERejectException(CMS.getUserMessage(
getLocale(request), "CMS_PROFILE_KEY_NOT_FOUND"));
}
}
public int getECKeyLen(X509Key key) throws Exception {
return 256; // XXX
}
public int getRSAKeyLen(X509Key key) throws Exception {
X509Key newkey = null;
try {
newkey = new X509Key(AlgorithmId.get("RSA"),
key.getKey());
} catch (Exception e) {
CMS.debug("KeyConstraint: getRSAKey Len " + e.toString());
return -1;
}
RSAPublicKey rsaKey = new RSAPublicKey(newkey.getEncoded());
return rsaKey.getKeySize();
}
public int getDSAKeyLen(X509Key key) throws Exception {
// Check DSAKey parameters.
// size refers to the p parameter.
DSAPublicKey dsaKey = new DSAPublicKey(key.getEncoded());
DSAParams keyParams = dsaKey.getParams();
BigInteger p = keyParams.getP();
int len = p.bitLength();
return len;
}
public String getText(Locale locale) {
String params[] = {
getConfig(CONFIG_KEY_TYPE),
getConfig(CONFIG_KEY_MIN_LEN),
getConfig(CONFIG_KEY_MAX_LEN)
};
return CMS.getUserMessage(locale,
"CMS_PROFILE_CONSTRAINT_KEY_TEXT", params);
}
public boolean isApplicable(IPolicyDefault def) {
if (def instanceof NoDefault)
return true;
if (def instanceof UserKeyDefault)
return true;
return false;
}
}
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