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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.certsrv.base;
import java.lang.*;
import java.io.IOException;
import netscape.security.util.*;
import netscape.security.x509.*;
/**
*
* The <code>KeyGenInfo</code> represents the information generated by
* the KeyGen tag of the HTML forms. It provides the parsing and accessing
* mechanisms.<p>
*
* <pre>
* SignedPublicKeyAndChallenge ::= SEQUENCE {
* publicKeyAndChallenge PublicKeyAndChallenge,
* signatureAlgorithm AlgorithmIdentifier,
* signature BIT STRING
* }
*
* PublicKeyAndChallenge ::= SEQUENCE {
* spki SubjectPublicKeyInfo,
* challenge IA5STRING
* }
*</pre>
*
*
* @version $Revision$, $Date$
*/
public class KeyGenInfo {
/*==========================================================
* variables
*==========================================================*/
private String mSPKACString;
private byte mPKAC[];
private byte mSPKAC[];
private X509Key mSPKI;
private DerValue mDerSPKI;
private String mChallenge;
private DerValue mDerChallenge;
private byte mSignature[];
private AlgorithmId mAlgId;
/*==========================================================
* constructors
*==========================================================*/
/**
* Construct empty KeyGenInfo. Need to call decode function
* later to initialize.
*/
public KeyGenInfo() {
}
/**
* Construct KeyGenInfo using the SignedPublicKeyAndChallenge
* string representation.
*
* @param spkac SignedPublicKeyAndChallenge string representation
*/
public KeyGenInfo(String spkac)
throws IOException {
decode(spkac);
}
/*==========================================================
* public methods
*==========================================================*/
/**
* Initialize using the SPKAC string
*
* @param spkac SPKAC string from the end user
*/
public void decode(String spkac) throws IOException {
mSPKACString = spkac;
mSPKAC = base64Decode(spkac);
derDecode(mSPKAC);
}
/**
* Der encoded into buffer
*
* @return Der encoded buffer
*/
public byte[] encode() {
return mSPKAC;
}
/**
* Get SPKI in DerValue form
*
* @return SPKI in DerValue form
*/
public DerValue getDerSPKI() {
return mDerSPKI;
}
/**
* Get SPKI as X509Key
*
* @return SPKI in X509Key form
*/
public X509Key getSPKI() {
return mSPKI;
}
/**
* Get Challenge phrase in DerValue form
*
* @return Challenge in DerValue form. null if none.
*/
public DerValue getDerChallenge() {
return mDerChallenge;
}
/**
* Get Challenge phrase in string format
*
* @return challenge phrase. null if none.
*/
public String getChallenge() {
return mChallenge;
}
/**
* Get Signature
* @return signature
*/
public byte[] getSignature() {
return mSignature;
}
/**
* Get Algorithm ID
* @return the algorithm id
*/
public AlgorithmId getAlgorithmId() {
return mAlgId;
}
/**
* Validate Signature and Challenge Phrase
*
* @param challenge phrase; null if none
* @return true if validated; otherwise, false
*/
public boolean validateChallenge(String challenge) {
if (challenge != null) {
if (!challenge.equals(mChallenge)) {
return false;
}
}
return true;
}
/**
* String representation of KenGenInfo
*
* @return string representation of KeGenInfo
*/
public String toString() {
if (mSPKACString != null)
return mSPKACString;
return "";
}
/*==========================================================
* private methods
*==========================================================*/
private byte[] base64Decode(String spkac)
throws IOException {
return com.netscape.osutil.OSUtil.AtoB(spkac);
}
private void derDecode(byte spkac[])
throws IOException {
DerInputStream derIn = new DerInputStream(spkac);
/* get SPKAC Algorithm & Signature */
DerValue derSPKACContent[] = derIn.getSequence(3);
mAlgId = AlgorithmId.parse(derSPKACContent[1]);
mSignature = derSPKACContent[2].getBitString();
/* get PKAC SPKI & Challenge */
mPKAC = derSPKACContent[0].toByteArray();
derIn = new DerInputStream(mPKAC);
DerValue derPKACContent[] = derIn.getSequence(2);
mDerSPKI = derPKACContent[0];
mSPKI = X509Key.parse(derPKACContent[0]);
mDerChallenge = derPKACContent[1];
if (mDerChallenge.length() != 0)
mChallenge = derPKACContent[1].getIA5String();
}
}
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