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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.servlet.cert.scep;
import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import netscape.ldap.*;
import java.security.*;
import java.security.MessageDigest;
import netscape.security.x509.*;
import netscape.security.pkcs.*;
import netscape.security.util.*;
import com.netscape.certsrv.base.*;
import com.netscape.certsrv.authority.*;
import com.netscape.certsrv.logging.*;
import com.netscape.certsrv.request.*;
import com.netscape.certsrv.request.IRequestQueue;
import com.netscape.certsrv.ca.*;
import com.netscape.certsrv.authentication.*;
import com.netscape.certsrv.authentication.AuthCredentials;
import com.netscape.certsrv.profile.*;
import com.netscape.certsrv.ldap.*;
import com.netscape.certsrv.publish.*;
import com.netscape.certsrv.apps.*;
import com.netscape.cms.servlet.profile.*;
import org.mozilla.jss.pkcs7.*;
import org.mozilla.jss.asn1.*;
import org.mozilla.jss.*;
import org.mozilla.jss.crypto.*;
import org.mozilla.jss.pkix.cert.Certificate;
import com.netscape.cmsutil.scep.CRSPKIMessage;
/**
* This servlet deals with PKCS#10-based certificate requests from
* CRS, now called SCEP, and defined at:
* http://search.ietf.org/internet-drafts/draft-nourse-scep-02.txt
*
* The router is hardcoded to look for the http://host:80/cgi-bin/pkiclient.exe
*
* The HTTP parameters are 'operation' and 'message'
* operation can be either 'GetCACert' or 'PKIOperation'
*
* @version $Revision: 14561 $, $Date: 2007-05-01 10:28:56 -0700 (Tue, 01 May 2007) $
*/
public class CRSEnrollment extends HttpServlet
{
protected IProfileSubsystem mProfileSubsystem = null;
protected String mProfileId = null;
protected ICertAuthority mAuthority;
protected IConfigStore mConfig = null;
protected IAuthSubsystem mAuthSubsystem;
protected String mAppendDN=null;
protected String mEntryObjectclass=null;
protected boolean mCreateEntry=false;
protected boolean mFlattenDN=false;
private String mAuthManagerName;
private String mSubstoreName;
private String mHashAlgorithm = "SHA1";
private String mmEncryptionAlgorithm = "DES3";
private String mEncryptionAlgorithm = "DES3";
protected ILogger mLogger = CMS.getLogger();
private ICertificateAuthority ca;
/* for hashing challenge password */
protected MessageDigest mSHADigest = null;
private static final String PROP_SUBSTORENAME = "substorename";
private static final String PROP_AUTHORITY = "authority";
private static final String PROP_CRS = "crs";
private static final String PROP_CRSCA = "casubsystem";
private static final String PROP_CRSAUTHMGR = "authName";
private static final String PROP_APPENDDN = "appendDN";
private static final String PROP_CREATEENTRY= "createEntry";
private static final String PROP_FLATTENDN = "flattenDN";
private static final String PROP_ENTRYOC = "entryObjectclass";
// URL parameters
private static final String URL_OPERATION = "operation";
private static final String URL_MESSAGE = "message";
// possible values for 'operation'
private static final String OP_GETCACERT = "GetCACert";
private static final String OP_PKIOPERATION = "PKIOperation";
public static final String AUTH_PASSWORD = "pwd";
public static final String AUTH_CREDS = "AuthCreds";
public static final String AUTH_TOKEN = "AuthToken";
public static final String AUTH_FAILED = "AuthFailed";
public static final String SANE_DNSNAME = "DNSName";
public static final String SANE_IPADDRESS = "IPAddress";
public static final String CERTINFO = "CertInfo";
public static final String SUBJECTNAME = "SubjectName";
public static ObjectIdentifier OID_UNSTRUCTUREDNAME = null;
public static ObjectIdentifier OID_UNSTRUCTUREDADDRESS = null;
public static ObjectIdentifier OID_SERIALNUMBER = null;
public CRSEnrollment(){}
public static Hashtable toHashtable(HttpServletRequest req) {
Hashtable httpReqHash = new Hashtable();
Enumeration names = req.getParameterNames();
while (names.hasMoreElements()) {
String name = (String)names.nextElement();
httpReqHash.put(name, req.getParameter(name));
}
return httpReqHash;
}
public void init(ServletConfig sc) {
// Find the CertificateAuthority we should use for CRS.
String crsCA = sc.getInitParameter(PROP_AUTHORITY);
if (crsCA == null)
crsCA = "ca";
mAuthority = (ICertAuthority) CMS.getSubsystem(crsCA);
ca = (ICertificateAuthority)mAuthority;
if (mAuthority == null) {
log(ILogger.LL_FAILURE, CMS.getLogMessage("CMSGW_CANT_FIND_AUTHORITY",crsCA));
}
try {
if (mAuthority instanceof ISubsystem) {
IConfigStore authorityConfig = ((ISubsystem)mAuthority).getConfigStore();
IConfigStore scepConfig = authorityConfig.getSubStore("scep");
mHashAlgorithm = scepConfig.getString("hashAlgorithm", "SHA1");
mEncryptionAlgorithm = scepConfig.getString("encryptionAlgorithm", "DES3");
}
} catch (EBaseException e) {
}
mmEncryptionAlgorithm = mEncryptionAlgorithm;
try {
mProfileSubsystem = (IProfileSubsystem)CMS.getSubsystem("profile");
mProfileId = sc.getInitParameter("profileId");
mAuthSubsystem = (IAuthSubsystem)CMS.getSubsystem(CMS.SUBSYSTEM_AUTH);
mAuthManagerName = sc.getInitParameter(PROP_CRSAUTHMGR);
mAppendDN = sc.getInitParameter(PROP_APPENDDN);
String tmp = sc.getInitParameter(PROP_CREATEENTRY);
if (tmp != null && tmp.trim().equalsIgnoreCase("true"))
mCreateEntry = true;
else
mCreateEntry = false;
tmp = sc.getInitParameter(PROP_FLATTENDN);
if (tmp != null && tmp.trim().equalsIgnoreCase("true"))
mFlattenDN = true;
else
mFlattenDN = false;
mEntryObjectclass = sc.getInitParameter(PROP_ENTRYOC);
if (mEntryObjectclass == null)
mEntryObjectclass = "cep";
mSubstoreName = sc.getInitParameter(PROP_SUBSTORENAME);
if (mSubstoreName == null)
mSubstoreName = "default";
} catch (Exception e) {
}
OID_UNSTRUCTUREDNAME = X500NameAttrMap.getDefault().getOid("UNSTRUCTUREDNAME");
OID_UNSTRUCTUREDADDRESS = X500NameAttrMap.getDefault().getOid("UNSTRUCTUREDADDRESS");
OID_SERIALNUMBER = X500NameAttrMap.getDefault().getOid("SERIALNUMBER");
try {
mSHADigest = MessageDigest.getInstance("SHA1");
}
catch (NoSuchAlgorithmException e) {
}
}
/**
*
* Service a CRS Request. It all starts here. This is where the message from the
* router is processed
*
* @param httpReq The HttpServletRequest.
* @param httpResp The HttpServletResponse.
*
*/
public void service(HttpServletRequest httpReq,
HttpServletResponse httpResp)
throws ServletException
{
boolean running_state = CMS.isInRunningState();
if (!running_state)
throw new ServletException(
"CMS server is not ready to serve.");
String operation = null;
String message = null;
mEncryptionAlgorithm = mmEncryptionAlgorithm;
// Parse the URL from the HTTP Request. Split it up into
// a structure which enables us to read the form elements
IArgBlock input = CMS.createArgBlock(toHashtable(httpReq));
try {
// Read in two form parameters - the router sets these
operation = (String)input.get(URL_OPERATION);
CMS.debug("operation=" + operation);
message = (String)input.get(URL_MESSAGE);
CMS.debug("message=" + message);
if (operation == null) {
// 'operation' is mandatory.
throw new ServletException("Bad request: operation missing from URL");
}
/**
* the router can make two kinds of requests
* 1) simple request for CA cert
* 2) encoded, signed, enveloped request for anything else (PKIOperation)
*/
if (operation.equals(OP_GETCACERT)) {
handleGetCACert(httpReq, httpResp);
}
else if (operation.equals(OP_PKIOPERATION)) {
String decodeMode = (String)input.get("decode");
if (decodeMode == null || decodeMode.equals("false")) {
handlePKIOperation(httpReq, httpResp, message);
} else {
decodePKIMessage(httpReq, httpResp, message);
}
}
else {
CMS.debug("Invalid operation " + operation);
throw new ServletException("unknown operation requested: "+operation);
}
}
catch (Exception e)
{
CMS.debug("Service exception " + e);
log(ILogger.LL_FAILURE,e.getMessage());
}
}
/**
* Log a message to the system log
*/
private void log(int level, String msg) {
mLogger.log(ILogger.EV_SYSTEM, ILogger.S_OTHER,
level, "CEP Enrollment: "+msg);
}
public IAuthToken authenticate(AuthCredentials credentials, IProfileAuthenticator authenticator,
HttpServletRequest request) throws EBaseException {
// build credential
Enumeration authNames = authenticator.getValueNames();
if (authNames != null) {
while (authNames.hasMoreElements()) {
String authName = (String) authNames.nextElement();
credentials.set(authName, request.getParameter(authName));
}
}
credentials.set("clientHost", request.getRemoteHost());
IAuthToken authToken = authenticator.authenticate(credentials);
if (authToken == null) {
return null;
}
SessionContext sc = SessionContext.getContext();
if (sc != null) {
sc.put(SessionContext.AUTH_MANAGER_ID, authenticator.getName());
String userid = authToken.getInString(IAuthToken.USER_ID);
if (userid != null) {
sc.put(SessionContext.USER_ID, userid);
}
}
return authToken;
}
/**
* Return the CA certificate back to the requestor.
* This needs to be changed so that if the CA has a certificate chain,
* the whole thing should get packaged as a PKIMessage (degnerate PKCS7 - no
* signerInfo)
*/
public void handleGetCACert(HttpServletRequest httpReq,
HttpServletResponse httpResp)
throws ServletException {
java.security.cert.X509Certificate[] chain = null;
CertificateChain certChain = mAuthority.getCACertChain();
try {
if (certChain == null) {
throw new ServletException("Internal Error: cannot get CA Cert");
}
chain = certChain.getChain();
byte[] bytes = null;
int i = 0;
String message = (String)httpReq.getParameter(URL_MESSAGE);
CMS.debug("handleGetCACert message=" + message);
if (message != null) {
try {
int j = Integer.parseInt(message);
if (j < chain.length) {
i = j;
}
} catch (NumberFormatException e1) {
}
}
CMS.debug("handleGetCACert selected chain=" + i);
bytes = chain[i].getEncoded();
httpResp.setContentType("application/x-x509-ca-cert");
// The following code may be used one day to encode
// the RA/CA cert chain for RA mode, but it will need some
// work.
/******
SET certs = new SET();
for (int i=0; i<chain.length; i++) {
ANY cert = new ANY(chain[i].getEncoded());
certs.addElement(cert);
}
SignedData crsd = new SignedData(
new SET(), // empty set of digestAlgorithmID's
new ContentInfo(
new OBJECT_IDENTIFIER(new long[] {1,2,840,113549,1,7,1}),
null), //empty content
certs,
null, // no CRL's
new SET() // empty SignerInfos
);
ContentInfo wrap = new ContentInfo(ContentInfo.SIGNED_DATA, crsd);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
wrap.encode(baos);
bytes = baos.toByteArray();
httpResp.setContentType("application/x-x509-ca-ra-cert");
*****/
httpResp.setContentLength(bytes.length);
httpResp.getOutputStream().write(bytes);
httpResp.getOutputStream().flush();
CMS.debug("Output certificate chain:");
CMS.debug(bytes);
}
catch (Exception e) {
CMS.debug("handleGetCACert exception " + e);
log(ILogger.LL_FAILURE, CMS.getLogMessage("CMSGW_ERROR_SENDING_DER_ENCODE_CERT",e.getMessage()));
throw new ServletException("Failed sending DER encoded version of CA cert to client");
}
}
public String getPasswordFromP10(PKCS10 p10)
{
PKCS10Attributes p10atts = p10.getAttributes();
Enumeration e = p10atts.getElements();
try {
while (e.hasMoreElements()) {
PKCS10Attribute p10a = (PKCS10Attribute)e.nextElement();
CertAttrSet attr = p10a.getAttributeValue();
if (attr.getName().equals(ChallengePassword.NAME)) {
if (attr.get(ChallengePassword.PASSWORD) != null) {
return (String)attr.get(ChallengePassword.PASSWORD);
}
}
}
} catch(Exception e1) {
// do nothing
}
return null;
}
/**
* If the 'operation' is 'PKIOperation', the 'message' part of the URL is a
* PKIMessage structure. We decode it to see what type message it is.
*/
/**
* Decodes the PKI message and return information to RA.
*/
public void decodePKIMessage(HttpServletRequest httpReq,
HttpServletResponse httpResp,
String msg)
throws ServletException {
CryptoContext cx=null;
CRSPKIMessage req=null;
byte[] decodedPKIMessage;
byte[] response=null;
String responseData = "";
decodedPKIMessage = com.netscape.osutil.OSUtil.AtoB(msg);
try {
ByteArrayInputStream is = new ByteArrayInputStream(decodedPKIMessage);
// We make two CRSPKIMessages. One of them, is the request, so we initialize
// it from the DER given to us from the router.
// The second is the response, and we'll fill this in as we go.
if (decodedPKIMessage.length < 50) {
throw new ServletException("CRS request is too small to be a real request ("+
decodedPKIMessage.length+" bytes)");
}
try {
req = new CRSPKIMessage();
String ea = req.decodeCRSPKIMessage(is);
if (ea != null) {
mEncryptionAlgorithm = ea;
}
}
catch (Exception e) {
CMS.debug(e);
throw new ServletException("Could not decode the request.");
}
// Create a new crypto context for doing all the crypto operations
cx = new CryptoContext(mEncryptionAlgorithm);
// Verify Signature on message (throws exception if sig bad)
verifyRequest(req,cx);
unwrapPKCS10(req,cx);
// Deal with Transaction ID
String transactionID = req.getTransactionID();
responseData = responseData +
"<TransactionID>" + transactionID + "</TransactionID>";
// End-User or RA's IP address
responseData = responseData +
"<RemoteAddr>" + httpReq.getRemoteAddr() + "</RemoteAddr>";
responseData = responseData +
"<RemoteHost>" + httpReq.getRemoteHost() + "</RemoteHost>";
// Deal with Nonces
byte[] sn = req.getSenderNonce();
// Deal with message type
String mt = req.getMessageType();
responseData = responseData +
"<MessageType>" + mt + "</MessageType>";
PKCS10 p10 = (PKCS10)req.getP10();
X500Name p10subject = p10.getSubjectName();
responseData = responseData +
"<SubjectName>" + p10subject.toString() + "</SubjectName>";
String pkcs10Attr = "";
PKCS10Attributes p10atts = p10.getAttributes();
Enumeration e = p10atts.getElements();
while (e.hasMoreElements()) {
PKCS10Attribute p10a = (PKCS10Attribute)e.nextElement();
CertAttrSet attr = p10a.getAttributeValue();
if (attr.getName().equals(ChallengePassword.NAME)) {
if (attr.get(ChallengePassword.PASSWORD) != null) {
pkcs10Attr = pkcs10Attr +
"<ChallengePassword><Password>" + (String)attr.get(ChallengePassword.PASSWORD) + "</Password></ChallengePassword>";
}
}
String extensionsStr = "";
if (attr.getName().equals(ExtensionsRequested.NAME)) {
Enumeration exts = ((ExtensionsRequested)attr).getExtensions().elements();
while (exts.hasMoreElements()) {
Extension ext = (Extension) exts.nextElement();
if (ext.getExtensionId().equals(
OIDMap.getOID(SubjectAlternativeNameExtension.IDENT)) ) {
DerOutputStream dos = new DerOutputStream();
SubjectAlternativeNameExtension sane = new SubjectAlternativeNameExtension(
Boolean.valueOf(false), // noncritical
ext.getExtensionValue());
Vector v =
(Vector) sane.get(SubjectAlternativeNameExtension. SUBJECT_NAME);
Enumeration gne = v.elements();
StringBuffer subjAltNameStr = new StringBuffer();
while (gne.hasMoreElements()) {
GeneralNameInterface gni = (GeneralNameInterface) gne.nextElement();
if (gni instanceof GeneralName) {
GeneralName genName = (GeneralName) gni;
String gn = genName.toString();
int colon = gn.indexOf(':');
String gnType = gn.substring(0,colon).trim();
String gnValue = gn.substring(colon+1).trim();
subjAltNameStr.append("<");
subjAltNameStr.append(gnType);
subjAltNameStr.append(">");
subjAltNameStr.append(gnValue);
subjAltNameStr.append("</");
subjAltNameStr.append(gnType);
subjAltNameStr.append(">");
}
} // while
extensionsStr = "<SubjAltName>" +
subjAltNameStr.toString() + "</SubjAltName>";
} // if
} // while
pkcs10Attr = pkcs10Attr +
"<Extensions>" + extensionsStr + "</Extensions>";
} // if extensions
} // while
responseData = responseData +
"<PKCS10>" + pkcs10Attr + "</PKCS10>";
} catch (CRSInvalidSignatureException e) {
CMS.debug("handlePKIMessage exception " + e);
CMS.debug(e);
} catch (Exception e) {
CMS.debug("handlePKIMessage exception " + e);
CMS.debug(e);
throw new ServletException("Failed to process message in CEP servlet: "+ e.getMessage());
}
// We have now processed the request, and need to make the response message
try {
responseData = "<XMLResponse>" + responseData + "</XMLResponse>";
// Get the response coding
response = responseData.getBytes();
// Encode the httpResp into B64
httpResp.setContentType("application/xml");
httpResp.setContentLength(response.length);
httpResp.getOutputStream().write(response);
httpResp.getOutputStream().flush();
CMS.debug("Output (decoding) PKIOperation response:");
CMS.debug(responseData);
}
catch (Exception e) {
throw new ServletException("Failed to create response for CEP message"+e.getMessage());
}
}
/**
* finds a request with this transaction ID.
* If could not find any request - return null
* If could only find 'rejected' or 'cancelled' requests, return null
* If found 'pending' or 'completed' request - return that request
*/
public void handlePKIOperation(HttpServletRequest httpReq,
HttpServletResponse httpResp,
String msg)
throws ServletException {
CryptoContext cx=null;
CRSPKIMessage req=null;
CRSPKIMessage crsResp=null;
byte[] decodedPKIMessage;
byte[] response=null;
X509CertImpl cert = null;
decodedPKIMessage = com.netscape.osutil.OSUtil.AtoB(msg);
try {
ByteArrayInputStream is = new ByteArrayInputStream(decodedPKIMessage);
// We make two CRSPKIMessages. One of them, is the request, so we initialize
// it from the DER given to us from the router.
// The second is the response, and we'll fill this in as we go.
if (decodedPKIMessage.length < 50) {
throw new ServletException("CRS request is too small to be a real request ("+
decodedPKIMessage.length+" bytes)");
}
try {
req = new CRSPKIMessage();
String ea = req.decodeCRSPKIMessage(is);
if (ea != null) {
mEncryptionAlgorithm = ea;
}
crsResp = new CRSPKIMessage();
}
catch (Exception e) {
CMS.debug(e);
throw new ServletException("Could not decode the request.");
}
crsResp.setMessageType(crsResp.mType_CertRep);
// Create a new crypto context for doing all the crypto operations
cx = new CryptoContext(mEncryptionAlgorithm);
// Verify Signature on message (throws exception if sig bad)
verifyRequest(req,cx);
// Deal with Transaction ID
String transactionID = req.getTransactionID();
if (transactionID == null) {
throw new ServletException("Error: malformed PKIMessage - missing transactionID");
}
else {
crsResp.setTransactionID(transactionID);
}
// Deal with Nonces
byte[] sn = req.getSenderNonce();
if (sn == null) {
throw new ServletException("Error: malformed PKIMessage - missing sendernonce");
}
else {
crsResp.setRecipientNonce(sn);
crsResp.setSenderNonce(new byte[] {0});
}
// Deal with message type
String mt = req.getMessageType();
if (mt == null) {
throw new ServletException("Error: malformed PKIMessage - missing messageType");
}
// now run appropriate code, depending on message type
if (mt.equals(req.mType_PKCSReq)) {
CMS.debug("Processing PKCSReq");
try {
// Check if there is an existing request. If this returns non-null,
// then the request is 'active' (either pending or completed) in
// which case, we compare the hash of the new request to the hash of the
// one in the queue - if they are the same, I return the state of the
// original request - as if it was 'getCertInitial' message.
// If the hashes are different, then the user attempted to enroll
// for a new request with the same txid, which is not allowed -
// so we return 'failure'.
IRequest cmsRequest= findRequestByTransactionID(req.getTransactionID(),true);
// If there was no request (with a cert) with this transaction ID,
// process it as a new request
cert = handlePKCSReq(httpReq, cmsRequest,req,crsResp,cx);
}
catch (CRSFailureException e) {
throw new ServletException("Couldn't handle CEP request (PKCSReq) - "+e.getMessage());
}
}
else if (mt.equals(req.mType_GetCertInitial)) {
CMS.debug("Processing GetCertInitial");
cert = handleGetCertInitial(req,crsResp);
} else {
CMS.debug("Invalid request type " + mt);
}
}
catch (CRSInvalidSignatureException e) {
CMS.debug("handlePKIMessage exception " + e);
CMS.debug(e);
crsResp.setFailInfo(crsResp.mFailInfo_badMessageCheck);
}
catch (Exception e) {
CMS.debug("handlePKIMessage exception " + e);
CMS.debug(e);
throw new ServletException("Failed to process message in CEP servlet: "+ e.getMessage());
}
// We have now processed the request, and need to make the response message
try {
// make the response
processCertRep(cx, cert,crsResp, req);
// Get the response coding
response = crsResp.getResponse();
// Encode the crsResp into B64
httpResp.setContentType("application/x-pki-message");
httpResp.setContentLength(response.length);
httpResp.getOutputStream().write(response);
httpResp.getOutputStream().flush();
CMS.debug("Output PKIOperation response:");
CMS.debug(CMS.BtoA(response));
}
catch (Exception e) {
throw new ServletException("Failed to create response for CEP message"+e.getMessage());
}
}
/**
* finds a request with this transaction ID.
* If could not find any request - return null
* If could only find 'rejected' or 'cancelled' requests, return null
* If found 'pending' or 'completed' request - return that request
*/
public IRequest findRequestByTransactionID(String txid, boolean ignoreRejected)
throws EBaseException {
/* Check if certificate request has been completed */
IRequestQueue rq = ca.getRequestQueue();
IRequest foundRequest = null;
Enumeration rids = rq.findRequestsBySourceId(txid);
if (rids == null) { return null; }
int count=0;
while (rids.hasMoreElements()) {
RequestId rid = (RequestId) rids.nextElement();
if (rid == null) {
continue;
}
IRequest request = rq.findRequest(rid);
if (request == null) {
continue;
}
if ( !ignoreRejected ||
request.getRequestStatus().equals(RequestStatus.PENDING) ||
request.getRequestStatus().equals(RequestStatus.COMPLETE)) {
if (foundRequest != null) {
}
foundRequest = request;
}
}
return foundRequest;
}
/**
* Called if the router is requesting us to send it its certificate
* Examine request queue for a request matching the transaction ID.
* Ignore any rejected or cancelled requests.
*
* If a request is found in the pending state, the response should be
* 'pending'
*
* If a request is found in the completed state, the response should be
* to return the certificate
*
* If no request is found, the response should be to return null
*
*/
public X509CertImpl handleGetCertInitial(CRSPKIMessage req,CRSPKIMessage resp)
{
IRequest foundRequest=null;
resp.setRecipientNonce(req.getSenderNonce());
resp.setSenderNonce(null);
try {
foundRequest = findRequestByTransactionID(req.getTransactionID(),false);
} catch (EBaseException e) {
}
if (foundRequest == null) {
resp.setFailInfo(resp.mFailInfo_badCertId);
resp.setPKIStatus(resp.mStatus_FAILURE);
return null;
}
return makeResponseFromRequest(req,resp,foundRequest);
}
public void verifyRequest(CRSPKIMessage req, CryptoContext cx)
throws CRSInvalidSignatureException {
// Get Signed Data
byte[] reqAAbytes = req.getAA();
byte[] reqAAsig = req.getAADigest();
}
/**
* Create an entry for this user in the publishing directory
*
*/
private boolean createEntry(String dn)
{
boolean result = false;
IPublisherProcessor ldapPub = mAuthority.getPublisherProcessor();
if (ldapPub == null || !ldapPub.enabled()) {
log(ILogger.LL_FAILURE, CMS.getLogMessage("CMSGW_ERROR_CREATE_ENTRY_FROM_CEP"));
return result;
}
ILdapConnFactory connFactory = ((IPublisherProcessor)ldapPub).getLdapConnModule().getLdapConnFactory();
if (connFactory == null) {
return result;
}
LDAPConnection connection=null;
try {
connection = connFactory.getConn();
String[] objectclasses = { "top", mEntryObjectclass };
LDAPAttribute ocAttrs = new LDAPAttribute("objectclass",objectclasses);
LDAPAttributeSet attrSet = new LDAPAttributeSet();
attrSet.add(ocAttrs);
LDAPEntry newEntry = new LDAPEntry(dn, attrSet);
connection.add(newEntry);
result=true;
}
catch (Exception e) {
log(ILogger.LL_FAILURE, CMS.getLogMessage("CMSGW_FAIL_CREAT_ENTRY_EXISTS",dn));
}
finally {
try {
connFactory.returnConn(connection);
}
catch (Exception f) {}
}
return result;
}
/**
* Here we decrypt the PKCS10 message from the client
*
*/
public void unwrapPKCS10(CRSPKIMessage req, CryptoContext cx)
throws ServletException,
CryptoManager.NotInitializedException,
CryptoContext.CryptoContextException,
CRSFailureException {
byte[] decryptedP10bytes = null;
SymmetricKey sk;
SymmetricKey skinternal;
SymmetricKey.Type skt;
KeyWrapper kw;
Cipher cip;
EncryptionAlgorithm ea;
boolean errorInRequest = false;
// Unwrap the session key with the Cert server key
try {
kw = cx.getKeyWrapper();
kw.initUnwrap(cx.getPrivateKey(),null);
skt = SymmetricKey.Type.DES;
ea = EncryptionAlgorithm.DES_CBC;
if (mEncryptionAlgorithm != null && mEncryptionAlgorithm.equals("DES3")) {
skt = SymmetricKey.Type.DES3;
ea = EncryptionAlgorithm.DES3_CBC;
}
sk = kw.unwrapSymmetric(req.getWrappedKey(),
skt,
SymmetricKey.Usage.DECRYPT,
0); // keylength is ignored
skinternal = cx.getDESKeyGenerator().clone(sk);
cip = skinternal.getOwningToken().getCipherContext(ea);
cip.initDecrypt(skinternal,(new IVParameterSpec(req.getIV())));
decryptedP10bytes = cip.doFinal(req.getEncryptedPkcs10());
CMS.debug("decryptedP10bytes:");
CMS.debug(decryptedP10bytes);
req.setP10(new PKCS10(decryptedP10bytes));
} catch (Exception e) {
CMS.debug("failed to unwrap PKCS10 " + e);
throw new CRSFailureException("Could not unwrap PKCS10 blob: "+e.getMessage());
}
}
private void getDetailFromRequest(CRSPKIMessage req, CRSPKIMessage crsResp)
throws CRSFailureException {
IRequest issueReq = null;
X509CertImpl issuedCert=null;
Vector extensionsRequested = null;
SubjectAlternativeNameExtension sane = null;
CertAttrSet requested_ext = null;
try {
PKCS10 p10 = (PKCS10)req.getP10();
if (p10 == null) {
crsResp.setFailInfo(crsResp.mFailInfo_badMessageCheck);
crsResp.setPKIStatus(crsResp.mStatus_FAILURE);
throw new CRSFailureException("Failed to decode pkcs10 from CEP request");
}
AuthCredentials authCreds = new AuthCredentials();
String challengePassword = null;
// Here, we make a new CertInfo - it's a new start for a certificate
X509CertInfo certInfo = CMS.getDefaultX509CertInfo();
// get some stuff out of the request
X509Key key = p10.getSubjectPublicKeyInfo();
X500Name p10subject = p10.getSubjectName();
X500Name subject=null;
// The following code will copy all the attributes
// into the AuthCredentials so they can be used for
// authentication
//
// Optionally, you can re-map the subject name from:
// one RDN, with many AVA's to
// many RDN's with one AVA in each.
Enumeration rdne = p10subject.getRDNs();
Vector rdnv = new Vector();
Hashtable sanehash = new Hashtable();
X500NameAttrMap xnap = X500NameAttrMap.getDefault();
while (rdne.hasMoreElements()) {
RDN rdn = (RDN) rdne.nextElement();
int i=0;
AVA[] oldavas = rdn.getAssertion();
for (i=0; i<rdn.getAssertionLength(); i++) {
AVA[] newavas = new AVA[1];
newavas[0] = oldavas[i];
authCreds.set(xnap.getName(oldavas[i].getOid()),
oldavas[i].getValue().getAsString());
if (oldavas[i].getOid().equals(OID_UNSTRUCTUREDNAME)) {
sanehash.put(SANE_DNSNAME,oldavas[i].getValue().getAsString());
}
if (oldavas[i].getOid().equals(OID_UNSTRUCTUREDADDRESS)) {
sanehash.put(SANE_IPADDRESS,oldavas[i].getValue().getAsString());
}
RDN newrdn = new RDN(newavas);
if (mFlattenDN) {
rdnv.addElement(newrdn);
}
}
}
if (mFlattenDN) subject = new X500Name(rdnv);
else subject = p10subject;
// create default key usage extension
KeyUsageExtension kue = new KeyUsageExtension();
kue.set(KeyUsageExtension.DIGITAL_SIGNATURE, Boolean.valueOf(true));
kue.set(KeyUsageExtension.KEY_ENCIPHERMENT, Boolean.valueOf(true));
PKCS10Attributes p10atts = p10.getAttributes();
Enumeration e = p10atts.getElements();
while (e.hasMoreElements()) {
PKCS10Attribute p10a = (PKCS10Attribute)e.nextElement();
CertAttrSet attr = p10a.getAttributeValue();
if (attr.getName().equals(ChallengePassword.NAME)) {
if (attr.get(ChallengePassword.PASSWORD) != null) {
req.put(AUTH_PASSWORD,
(String)attr.get(ChallengePassword.PASSWORD));
req.put(ChallengePassword.NAME,
hashPassword(
(String)attr.get(ChallengePassword.PASSWORD)));
}
}
if (attr.getName().equals(ExtensionsRequested.NAME)) {
Enumeration exts = ((ExtensionsRequested)attr).getExtensions().elements();
while (exts.hasMoreElements()) {
Extension ext = (Extension) exts.nextElement();
if (ext.getExtensionId().equals(
OIDMap.getOID(KeyUsageExtension.IDENT)) ) {
kue = new KeyUsageExtension(
new Boolean(false), // noncritical
ext.getExtensionValue());
}
if (ext.getExtensionId().equals(
OIDMap.getOID(SubjectAlternativeNameExtension.IDENT)) ) {
DerOutputStream dos = new DerOutputStream();
sane = new SubjectAlternativeNameExtension(
new Boolean(false), // noncritical
ext.getExtensionValue());
Vector v =
(Vector) sane.get(SubjectAlternativeNameExtension. SUBJECT_NAME);
Enumeration gne = v.elements();
while (gne.hasMoreElements()) {
GeneralNameInterface gni = (GeneralNameInterface) gne.nextElement();
if (gni instanceof GeneralName) {
GeneralName genName = (GeneralName) gni;
String gn = genName.toString();
int colon = gn.indexOf(':');
String gnType = gn.substring(0,colon).trim();
String gnValue = gn.substring(colon+1).trim();
authCreds.set(gnType,gnValue);
}
}
}
}
}
}
if (authCreds != null) req.put(AUTH_CREDS,authCreds);
try {
if (sane == null) sane = makeDefaultSubjectAltName(sanehash);
} catch (Exception sane_e) {
log(ILogger.LL_FAILURE, CMS.getLogMessage("CMSGW_ENROLL_FAIL_NO_SUBJ_ALT_NAME",
sane_e.getMessage()));
}
try {
if (mAppendDN != null && ! mAppendDN.equals("")) {
X500Name newSubject = new X500Name(subject.toString());
subject = new X500Name( subject.toString().concat(","+mAppendDN));
}
} catch (Exception sne) {
log(ILogger.LL_INFO, "Unable to use appendDN parameter: "+mAppendDN+". Error is "+sne.getMessage()+" Using unmodified subjectname");
}
if (subject != null) req.put(SUBJECTNAME, subject);
if (key == null || subject == null) {
// log
//throw new ERegistrationException(RegistrationResources.ERROR_MALFORMED_P10);
}
certInfo.set(X509CertInfo.VERSION,
new CertificateVersion(CertificateVersion.V3));
certInfo.set(X509CertInfo.SUBJECT,
new CertificateSubjectName(subject));
certInfo.set(X509CertInfo.KEY,
new CertificateX509Key(key));
CertificateExtensions ext = new CertificateExtensions();
if (kue != null) {
ext.set(KeyUsageExtension.NAME, kue);
}
// add subjectAltName extension, if present
if (sane != null) {
ext.set(SubjectAlternativeNameExtension.NAME, sane);
}
certInfo.set(X509CertInfo.EXTENSIONS,ext);
req.put(CERTINFO, certInfo);
} catch (Exception e) {
crsResp.setFailInfo(crsResp.mFailInfo_badMessageCheck);
crsResp.setPKIStatus(crsResp.mStatus_FAILURE);
return ;
} // NEED TO FIX
}
private SubjectAlternativeNameExtension makeDefaultSubjectAltName(Hashtable ht) {
// if no subjectaltname extension was requested, we try to make it up
// from some of the elements of the subject name
int itemCount = ht.size();
GeneralNameInterface[] gn = new GeneralNameInterface[ht.size()];
itemCount = 0;
Enumeration en = ht.keys();
while (en.hasMoreElements()) {
String key = (String) en.nextElement();
if (key.equals(SANE_DNSNAME)) {
gn[itemCount++] = new DNSName((String)ht.get(key));
}
if (key.equals(SANE_IPADDRESS)) {
gn[itemCount++] = new IPAddressName((String)ht.get(key));
}
}
try {
return new SubjectAlternativeNameExtension( new GeneralNames(gn) );
} catch (Exception e) {
log(ILogger.LL_INFO, CMS.getLogMessage("CMSGW_ENROLL_FAIL_NO_SUBJ_ALT_NAME",
e.getMessage()));
return null;
}
}
// Perform authentication
/*
* if the authentication is set up for CEP, and the user provides
* some credential, an attempt is made to authenticate the user
* If this fails, this method will return true
* If it is sucessful, this method will return true and
* an authtoken will be in the request
*
* If authentication is not configured, this method will
* return false. The request will be processed in the usual
* way, but no authtoken will be in the request.
*
* In other word, this method returns true if the request
* should be aborted, false otherwise.
*/
private boolean authenticateUser(CRSPKIMessage req) {
boolean authenticationFailed = true;
if (mAuthManagerName == null) {
return false;
}
String password = (String)req.get(AUTH_PASSWORD);
AuthCredentials authCreds = (AuthCredentials)req.get(AUTH_CREDS);
if (authCreds == null) {
authCreds = new AuthCredentials();
}
// authtoken starts as null
AuthToken token = null;
if (password != null && !password.equals("")) {
try {
authCreds.set(AUTH_PASSWORD,password);
} catch (Exception e) {}
}
try {
token = (AuthToken)mAuthSubsystem.authenticate(authCreds,mAuthManagerName);
authCreds.delete(AUTH_PASSWORD);
// if we got here, the authenticate call must not have thrown
// an exception
authenticationFailed = false;
}
catch (EInvalidCredentials ex) {
// Invalid credentials - we must reject the request
authenticationFailed = true;
}
catch (EMissingCredential mc) {
// Misssing credential - we'll log, and process manually
authenticationFailed = false;
}
catch (EBaseException ex) {
// If there's some other error, we'll reject
// So, we just continue on, - AUTH_TOKEN will not be set.
}
if (token != null) {
req.put(AUTH_TOKEN,token);
}
return authenticationFailed;
}
private boolean areFingerprintsEqual(IRequest req, Hashtable fingerprints)
{
Hashtable old_fprints = req.getExtDataInHashtable(IRequest.FINGERPRINTS);
if (old_fprints == null) { return false; }
byte[] old_md5 = CMS.AtoB((String) old_fprints.get("MD5"));
byte[] new_md5 = (byte[]) fingerprints.get("MD5");
if (old_md5.length != new_md5.length) return false;
for (int i=0;i<old_md5.length; i++) {
if (old_md5[i] != new_md5[i]) return false;
}
return true;
}
public X509CertImpl handlePKCSReq(HttpServletRequest httpReq,
IRequest cmsRequest, CRSPKIMessage req,
CRSPKIMessage crsResp, CryptoContext cx)
throws ServletException,
CryptoManager.NotInitializedException,
CRSFailureException {
try {
unwrapPKCS10(req,cx);
Hashtable fingerprints = makeFingerPrints(req);
if (cmsRequest != null) {
if (areFingerprintsEqual(cmsRequest, fingerprints)) {
CMS.debug("created response from request");
return makeResponseFromRequest(req,crsResp,cmsRequest);
}
else {
CMS.debug("duplicated transaction id");
log(ILogger.LL_FAILURE, CMS.getLogMessage("CMSGW_ENROLL_FAIL_DUP_TRANS_ID"));
crsResp.setFailInfo(crsResp.mFailInfo_badRequest);
crsResp.setPKIStatus(crsResp.mStatus_FAILURE);
return null;
}
}
getDetailFromRequest(req,crsResp);
boolean authFailed = authenticateUser(req);
if (authFailed) {
CMS.debug("authentication failed");
log(ILogger.LL_SECURITY, CMS.getLogMessage("CMSGW_ENROLL_FAIL_NO_AUTH"));
crsResp.setFailInfo(crsResp.mFailInfo_badIdentity);
crsResp.setPKIStatus(crsResp.mStatus_FAILURE);
// perform audit log
String auditMessage = CMS.getLogMessage(
"LOGGING_SIGNED_AUDIT_NON_PROFILE_CERT_REQUEST_5",
httpReq.getRemoteAddr(),
ILogger.FAILURE,
req.getTransactionID(),
"CRSEnrollment",
ILogger.SIGNED_AUDIT_EMPTY_VALUE);
ILogger signedAuditLogger = CMS.getSignedAuditLogger();
if (signedAuditLogger != null) {
signedAuditLogger.log(ILogger.EV_SIGNED_AUDIT,
null, ILogger.S_SIGNED_AUDIT,
ILogger.LL_SECURITY, auditMessage);
}
return null;
}
else {
IRequest ireq = postRequest(httpReq, req,crsResp);
CMS.debug("created response");
return makeResponseFromRequest(req,crsResp, ireq);
}
} catch (CryptoContext.CryptoContextException e) {
CMS.debug("failed to decrypt the request " + e);
log(ILogger.LL_FAILURE, CMS.getLogMessage("CMSGW_ENROLL_FAIL_NO_DECRYPT_PKCS10",
e.getMessage()));
crsResp.setFailInfo(crsResp.mFailInfo_badMessageCheck);
crsResp.setPKIStatus(crsResp.mStatus_FAILURE);
} catch (EBaseException e) {
CMS.debug("operation failure - " + e);
log(ILogger.LL_FAILURE, CMS.getLogMessage("CMSGW_ERNOLL_FAIL_NO_NEW_REQUEST_POSTED",
e.getMessage()));
crsResp.setFailInfo(crsResp.mFailInfo_internalCAError);
crsResp.setPKIStatus(crsResp.mStatus_FAILURE);
}
return null;
}
////// post the request
/*
needed:
token (authtoken)
certInfo
fingerprints x
req.transactionID
crsResp
*/
private IRequest postRequest(HttpServletRequest httpReq, CRSPKIMessage req, CRSPKIMessage crsResp)
throws EBaseException {
X500Name subject = (X500Name)req.get(SUBJECTNAME);
if (mCreateEntry) {
if (subject == null) {
CMS.debug( "CRSEnrollment::postRequest() - subject is null!" );
return null;
}
createEntry(subject.toString());
}
// use profile framework to handle SCEP
if (mProfileId != null) {
PKCS10 pkcs10data = (PKCS10)req.getP10();
String pkcs10blob = CMS.BtoA(pkcs10data.toByteArray());
// XXX authentication handling
CMS.debug("Found profile=" + mProfileId);
IProfile profile = mProfileSubsystem.getProfile(mProfileId);
if (profile == null) {
CMS.debug("profile " + mProfileId + " not found");
return null;
}
IProfileContext ctx = profile.createContext();
IProfileAuthenticator authenticator = null;
try {
CMS.debug("Retrieving authenticator");
authenticator = profile.getAuthenticator();
if (authenticator == null) {
CMS.debug("No authenticator Found");
} else {
CMS.debug("Got authenticator=" + authenticator.getClass().getName());
}
} catch (EProfileException e) {
// authenticator not installed correctly
}
IAuthToken authToken = null;
// for ssl authentication; pass in servlet for retrieving
// ssl client certificates
SessionContext context = SessionContext.getContext();
// insert profile context so that input parameter can be retrieved
context.put("profileContext", ctx);
context.put("sslClientCertProvider",
new SSLClientCertProvider(httpReq));
String p10Password = getPasswordFromP10(pkcs10data);
AuthCredentials credentials = new AuthCredentials();
credentials.set("UID", httpReq.getRemoteAddr());
credentials.set("PWD", p10Password);
if (authenticator == null) {
// XXX - to help caRouterCert to work, we need to
// add authentication to caRouterCert
authToken = new AuthToken(null);
} else {
authToken = authenticate(credentials, authenticator, httpReq);
}
IRequest reqs[] = null;
CMS.debug("CRSEnrollment: Creating profile requests");
ctx.set(IEnrollProfile.CTX_CERT_REQUEST_TYPE, "pkcs10");
ctx.set(IEnrollProfile.CTX_CERT_REQUEST, pkcs10blob);
Locale locale = Locale.getDefault();
reqs = profile.createRequests(ctx, locale);
if (reqs == null) {
CMS.debug("CRSEnrollment: No request has been created");
return null;
} else {
CMS.debug("CRSEnrollment: Request (" + reqs.length + ") have been created");
}
// set transaction id
reqs[0].setExtData("profileId", mProfileId);
reqs[0].setSourceId(req.getTransactionID());
CMS.debug("CRSEnrollment: Populating inputs");
profile.populateInput(ctx, reqs[0]);
CMS.debug("CRSEnrollment: Populating requests");
profile.populate(reqs[0]);
CMS.debug("CRSEnrollment: Submitting request");
profile.submit(authToken, reqs[0]);
CMS.debug("CRSEnrollment: Done submitting request");
return reqs[0];
}
IRequestQueue rq = ca.getRequestQueue();
IRequest pkiReq = rq.newRequest(IRequest.ENROLLMENT_REQUEST);
AuthToken token = (AuthToken) req.get(AUTH_TOKEN);
if (token != null) {
pkiReq.setExtData(IRequest.AUTH_TOKEN,token);
}
pkiReq.setExtData(IRequest.HTTP_PARAMS, IRequest.CERT_TYPE, IRequest.CEP_CERT);
X509CertInfo certInfo = (X509CertInfo) req.get(CERTINFO);
pkiReq.setExtData(IRequest.CERT_INFO, new X509CertInfo[] { certInfo } );
pkiReq.setExtData("cepsubstore", mSubstoreName);
try {
String chpwd = (String)req.get(ChallengePassword.NAME);
if (chpwd != null) {
pkiReq.setExtData("challengePhrase",
chpwd );
}
} catch (Exception pwex) {
}
Hashtable fingerprints = (Hashtable)req.get(IRequest.FINGERPRINTS);
if (fingerprints.size() > 0) {
Hashtable encodedPrints = new Hashtable(fingerprints.size());
Enumeration e = fingerprints.keys();
while (e.hasMoreElements()) {
String key = (String)e.nextElement();
byte[] value = (byte[])fingerprints.get(key);
encodedPrints.put(key, CMS.BtoA(value));
}
pkiReq.setExtData(IRequest.FINGERPRINTS, encodedPrints);
}
pkiReq.setSourceId(req.getTransactionID());
rq.processRequest(pkiReq);
crsResp.setPKIStatus(crsResp.mStatus_SUCCESS);
mLogger.log(ILogger.EV_AUDIT, ILogger.S_OTHER,
AuditFormat.LEVEL,
AuditFormat.ENROLLMENTFORMAT,
new Object[] {
pkiReq.getRequestId(),
AuditFormat.FROMROUTER,
mAuthManagerName == null ? AuditFormat.NOAUTH : mAuthManagerName,
"pending",
subject ,
""}
);
return pkiReq;
}
public Hashtable makeFingerPrints(CRSPKIMessage req) {
Hashtable fingerprints = new Hashtable();
MessageDigest md;
String[] hashes = new String[] {"MD2", "MD5", "SHA1"};
PKCS10 p10 = (PKCS10)req.getP10();
for (int i=0;i<hashes.length;i++) {
try {
md = MessageDigest.getInstance(hashes[i]);
md.update(p10.getCertRequestInfo());
fingerprints.put(hashes[i],md.digest());
}
catch (NoSuchAlgorithmException nsa) {}
}
if (fingerprints != null) {
req.put(IRequest.FINGERPRINTS,fingerprints);
}
return fingerprints;
}
// Take a look to see if the request was successful, and fill
// in the response message
private X509CertImpl makeResponseFromRequest(CRSPKIMessage crsReq, CRSPKIMessage crsResp,
IRequest pkiReq)
{
X509CertImpl issuedCert=null;
RequestStatus status = pkiReq.getRequestStatus();
String profileId = pkiReq.getExtDataInString("profileId");
if (profileId != null) {
CMS.debug("CRSEnrollment: Found profile request");
X509CertImpl cert =
pkiReq.getExtDataInCert(IEnrollProfile.REQUEST_ISSUED_CERT);
if (cert == null) {
CMS.debug("CRSEnrollment: No certificate has been found");
} else {
CMS.debug("CRSEnrollment: Found certificate");
}
crsResp.setPKIStatus(crsResp.mStatus_SUCCESS);
return cert;
}
if ( status.equals(RequestStatus.COMPLETE)) {
Integer success = pkiReq.getExtDataInInteger(IRequest.RESULT);
if (success.equals(IRequest.RES_SUCCESS)) {
// The cert was issued, lets send it back to the router
X509CertImpl[] issuedCertBuf =
pkiReq.getExtDataInCertArray(IRequest.ISSUED_CERTS);
if (issuedCertBuf == null || issuedCertBuf.length == 0) {
// writeError("Internal Error: Bad operation",httpReq,httpResp);
CMS.debug( "CRSEnrollment::makeResponseFromRequest() - " +
"Bad operation" );
return null;
}
issuedCert = issuedCertBuf[0];
crsResp.setPKIStatus(crsResp.mStatus_SUCCESS);
}
else { // status is not 'success' - there must've been a problem
crsResp.setPKIStatus(crsResp.mStatus_FAILURE);
crsResp.setFailInfo(crsResp.mFailInfo_badAlg);
}
}
else if (status.equals(RequestStatus.REJECTED_STRING) ||
status.equals(RequestStatus.CANCELED_STRING)) {
crsResp.setPKIStatus(crsResp.mStatus_FAILURE);
crsResp.setFailInfo(crsResp.mFailInfo_badRequest);
}
else { // not complete
crsResp.setPKIStatus(crsResp.mStatus_PENDING);
}
return issuedCert;
}
/**
* This needs to be re-written to log the messages to the system log, since there
* will be no visual webpage feedback for the user. (he's using a router)
*/
private void writeError(String errMsg, HttpServletRequest httpReq,
HttpServletResponse httpResp)
throws IOException
{
}
protected String hashPassword(String pwd) {
String salt = "lala123";
byte[] pwdDigest = mSHADigest.digest((salt+pwd).getBytes());
String b64E = com.netscape.osutil.OSUtil.BtoA(pwdDigest);
return "{SHA}"+b64E;
}
/**
* Make the CRSPKIMESSAGE response
*/
private void processCertRep(CryptoContext cx,
X509CertImpl issuedCert,
CRSPKIMessage crsResp,
CRSPKIMessage crsReq)
throws CRSFailureException {
byte[] msgdigest = null;
byte[] encryptedDesKey = null;
try {
if (issuedCert != null) {
SymmetricKey sk;
SymmetricKey skinternal;
KeyGenAlgorithm kga = KeyGenAlgorithm.DES;
EncryptionAlgorithm ea = EncryptionAlgorithm.DES_CBC;
if (mEncryptionAlgorithm != null && mEncryptionAlgorithm.equals("DES3")) {
kga = KeyGenAlgorithm.DES3;
ea = EncryptionAlgorithm.DES3_CBC;
}
// 1. Make the Degenerated PKCS7 with the recipient's certificate in it
byte toBeEncrypted[] =
crsResp.makeSignedRep(1, // version
issuedCert.getEncoded()
);
// 2. Encrypt the above byte array with a new random DES key
sk = cx.getDESKeyGenerator().generate();
skinternal = cx.getInternalToken().getKeyGenerator(kga).clone(sk);
byte[] padded = Cipher.pad(toBeEncrypted, ea.getBlockSize());
// This should be changed to generate proper DES IV.
Cipher cipher = cx.getInternalToken().getCipherContext(ea);
IVParameterSpec desIV =
new IVParameterSpec(new byte[]{
(byte)0xff, (byte)0x00,
(byte)0xff, (byte)0x00,
(byte)0xff, (byte)0x00,
(byte)0xff, (byte)0x00 } );
cipher.initEncrypt(sk,desIV);
byte[] encryptedData = cipher.doFinal(padded);
crsResp.makeEncryptedContentInfo(desIV.getIV(),encryptedData, mEncryptionAlgorithm);
// 3. Extract the recipient's public key
PublicKey rcpPK = crsReq.getSignerPublicKey();
// 4. Encrypt the DES key with the public key
// we have to move the key onto the interal token.
//skinternal = cx.getInternalKeyStorageToken().cloneKey(sk);
skinternal = cx.getInternalToken().cloneKey(sk);
KeyWrapper kw = cx.getInternalKeyWrapper();
kw.initWrap(rcpPK, null);
encryptedDesKey = kw.wrap(skinternal);
crsResp.setRcpIssuerAndSerialNumber(crsReq.getSgnIssuerAndSerialNumber());
crsResp.makeRecipientInfo(0, encryptedDesKey );
}
byte[] ed = crsResp.makeEnvelopedData(0);
// 7. Make Digest of SignedData Content
MessageDigest md = MessageDigest.getInstance(mHashAlgorithm);
msgdigest = md.digest(ed);
crsResp.setMsgDigest(msgdigest);
}
catch (Exception e) {
throw new CRSFailureException("Failed to create inner response to CEP message: "+e.getMessage());
}
// 5. Make a RecipientInfo
// The issuer name & serial number here, should be that of
// the EE's self-signed Certificate
// [I can get it from the req blob, but later, I should
// store the recipient's self-signed certificate with the request
// so I can get at it later. I need to do this to support
// 'PENDING']
try {
// 8. Make Authenticated Attributes
// we can just pull the transaction ID out of the request.
// Later, we will have to put it out of the Request queue,
// so we can support PENDING
crsResp.setTransactionID(crsReq.getTransactionID());
// recipientNonce and SenderNonce have already been set
crsResp.makeAuthenticatedAttributes();
// crsResp.makeAuthenticatedAttributes_old();
// now package up the rest of the SignerInfo
{
byte[] signingcertbytes = cx.getSigningCert().getEncoded();
Certificate.Template sgncert_t = new Certificate.Template();
Certificate sgncert =
(Certificate) sgncert_t.decode(new ByteArrayInputStream(signingcertbytes));
IssuerAndSerialNumber sgniasn =
new IssuerAndSerialNumber(sgncert.getInfo().getIssuer(),
sgncert.getInfo().getSerialNumber());
crsResp.setSgnIssuerAndSerialNumber(sgniasn);
// 10. Make SignerInfo
crsResp.makeSignerInfo(1, cx.getPrivateKey(), mHashAlgorithm);
// 11. Make SignedData
crsResp.makeSignedData(1, signingcertbytes, mHashAlgorithm);
crsResp.debug();
}
}
catch (Exception e) {
throw new CRSFailureException("Failed to create outer response to CEP request: "+e.getMessage());
}
// if debugging, dump out the response into a file
}
class CryptoContext {
private CryptoManager cm;
private CryptoToken internalToken;
private CryptoToken internalKeyStorageToken;
private KeyGenerator DESkg;
private Enumeration externalTokens = null;
private org.mozilla.jss.crypto.X509Certificate signingCert;
private org.mozilla.jss.crypto.PrivateKey signingCertPrivKey;
private int signingCertKeySize = 0;
class CryptoContextException extends Exception {
public CryptoContextException() { super(); }
public CryptoContextException(String s) { super(s); }
}
public CryptoContext(String encryptionAlgorithm)
throws CryptoContextException
{
try {
KeyGenAlgorithm kga = KeyGenAlgorithm.DES;
if (encryptionAlgorithm != null && encryptionAlgorithm.equals("DES3")) {
kga = KeyGenAlgorithm.DES3;
}
cm = CryptoManager.getInstance();
internalToken = cm.getInternalCryptoToken();
internalKeyStorageToken = cm.getInternalKeyStorageToken();
DESkg = internalToken.getKeyGenerator(kga);
signingCert = cm.findCertByNickname(ca.getNickname());
signingCertPrivKey = cm.findPrivKeyByCert(signingCert);
byte[] encPubKeyInfo = signingCert.getPublicKey().getEncoded();
SEQUENCE.Template outer = SEQUENCE.getTemplate();
outer.addElement( ANY.getTemplate() ); // algid
outer.addElement( BIT_STRING.getTemplate() );
SEQUENCE outerSeq = (SEQUENCE) ASN1Util.decode(outer, encPubKeyInfo);
BIT_STRING bs = (BIT_STRING) outerSeq.elementAt(1);
byte[] encPubKey = bs.getBits();
if( bs.getPadCount() != 0) {
throw new CryptoContextException("Internal error: Invalid Public key. Not an integral number of bytes.");
}
SEQUENCE.Template inner = new SEQUENCE.Template();
inner.addElement( INTEGER.getTemplate());
inner.addElement( INTEGER.getTemplate());
SEQUENCE pubKeySeq = (SEQUENCE) ASN1Util.decode(inner, encPubKey);
INTEGER modulus = (INTEGER) pubKeySeq.elementAt(0);
signingCertKeySize = modulus.bitLength();
try {
FileOutputStream fos = new FileOutputStream("pubkey.der");
fos.write(signingCert.getPublicKey().getEncoded());
fos.close();
} catch (Exception e) {}
}
catch (InvalidBERException e) {
throw new CryptoContextException("Internal Error: Bad internal Certificate Representation. Not a valid RSA-signed certificate");
}
catch (CryptoManager.NotInitializedException e) {
throw new CryptoContextException("Crypto Manager not initialized");
}
catch (NoSuchAlgorithmException e) {
throw new CryptoContextException("Cannot create DES key generator");
}
catch (ObjectNotFoundException e) {
throw new CryptoContextException("Certificate not found"+ca.getNickname());
}
catch (TokenException e) {
throw new CryptoContextException("Problem with Crypto Token: "+e.getMessage());
}
}
public KeyGenerator getDESKeyGenerator() {
return DESkg;
}
public CryptoToken getInternalToken() {
return internalToken;
}
public void setExternalTokens( Enumeration tokens ) {
externalTokens = tokens;
}
public Enumeration getExternalTokens() {
return externalTokens;
}
public CryptoToken getInternalKeyStorageToken() {
return internalKeyStorageToken;
}
public CryptoManager getCryptoManager() {
return cm;
}
public KeyWrapper getKeyWrapper()
throws CryptoContextException {
try {
return signingCertPrivKey.getOwningToken().getKeyWrapper(KeyWrapAlgorithm.RSA);
}
catch (TokenException e) {
throw new CryptoContextException("Problem with Crypto Token: "+e.getMessage());
}
catch (NoSuchAlgorithmException e) {
throw new CryptoContextException(e.getMessage());
}
}
public KeyWrapper getInternalKeyWrapper()
throws CryptoContextException {
try {
return getInternalToken().getKeyWrapper(KeyWrapAlgorithm.RSA);
}
catch (TokenException e) {
throw new CryptoContextException("Problem with Crypto Token: "+e.getMessage());
}
catch (NoSuchAlgorithmException e) {
throw new CryptoContextException(e.getMessage());
}
}
public org.mozilla.jss.crypto.PrivateKey getPrivateKey() {
return signingCertPrivKey;
}
public org.mozilla.jss.crypto.X509Certificate getSigningCert() {
return signingCert;
}
}
/* General failure. The request/response cannot be processed. */
class CRSFailureException extends Exception {
public CRSFailureException() { super(); }
public CRSFailureException(String s) { super(s); }
}
class CRSInvalidSignatureException extends Exception {
public CRSInvalidSignatureException() { super(); }
public CRSInvalidSignatureException(String s) { super(s); }
}
class CRSPolicyException extends Exception {
public CRSPolicyException() { super(); }
public CRSPolicyException(String s) { super(s); }
}
}
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