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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2020 Nordix Foundation.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.oom.certservice.cmpv2client.impl;
import static org.onap.oom.certservice.cmpv2client.impl.CmpUtil.createRandomBytes;
import static org.onap.oom.certservice.cmpv2client.impl.CmpUtil.createRandomInt;
import static org.onap.oom.certservice.cmpv2client.impl.CmpUtil.generatePkiHeader;
import java.security.KeyPair;
import java.util.Date;
import java.util.List;
import org.bouncycastle.asn1.ASN1Integer;
import org.bouncycastle.asn1.cmp.PKIBody;
import org.bouncycastle.asn1.cmp.PKIHeader;
import org.bouncycastle.asn1.cmp.PKIMessage;
import org.bouncycastle.asn1.crmf.CertReqMessages;
import org.bouncycastle.asn1.crmf.CertReqMsg;
import org.bouncycastle.asn1.crmf.CertRequest;
import org.bouncycastle.asn1.crmf.CertTemplateBuilder;
import org.bouncycastle.asn1.crmf.ProofOfPossession;
import org.bouncycastle.asn1.x500.X500Name;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
import org.bouncycastle.operator.DefaultSignatureAlgorithmIdentifierFinder;
import org.onap.oom.certservice.cmpv2client.exceptions.CmpClientException;
/**
* Implementation of the CmpClient Interface conforming to RFC4210 (Certificate Management Protocol
* (CMP)) and RFC4211 (Certificate Request Message Format (CRMF)) standards.
*/
class CreateCertRequest {
private X500Name issuerDn;
private X500Name subjectDn;
private List<String> sansList;
private KeyPair subjectKeyPair;
private Date notBefore;
private Date notAfter;
private String initAuthPassword;
private String senderKid;
private static final int ITERATIONS = createRandomInt(1000);
private static final byte[] SALT = createRandomBytes();
private final int certReqId = createRandomInt(Integer.MAX_VALUE);
private final AlgorithmIdentifier signingAlgorithm = new DefaultSignatureAlgorithmIdentifierFinder()
.find("SHA256withRSA");
public void setIssuerDn(X500Name issuerDn) {
this.issuerDn = issuerDn;
}
public void setSubjectDn(X500Name subjectDn) {
this.subjectDn = subjectDn;
}
public void setSansList(List<String> sansList) {
this.sansList = sansList;
}
public void setSubjectKeyPair(KeyPair subjectKeyPair) {
this.subjectKeyPair = subjectKeyPair;
}
public void setNotBefore(Date notBefore) {
this.notBefore = notBefore;
}
public void setNotAfter(Date notAfter) {
this.notAfter = notAfter;
}
public void setInitAuthPassword(String initAuthPassword) {
this.initAuthPassword = initAuthPassword;
}
public void setSenderKid(String senderKid) {
this.senderKid = senderKid;
}
/**
* Method to create {@link PKIMessage} from {@link CertRequest},{@link ProofOfPossession}, {@link
* CertReqMsg}, {@link CertReqMessages}, {@link PKIHeader} and {@link PKIBody}.
*
* @return {@link PKIMessage}
*/
public PKIMessage generateCertReq() throws CmpClientException {
final CertTemplateBuilder certTemplateBuilder =
new CertTemplateBuilder()
.setIssuer(issuerDn)
.setSubject(subjectDn)
.setExtensions(CmpMessageHelper.generateExtension(sansList))
.setValidity(CmpMessageHelper.generateOptionalValidity(notBefore, notAfter))
.setVersion(2)
.setSerialNumber(new ASN1Integer(0L))
.setSigningAlg(signingAlgorithm)
.setPublicKey(
SubjectPublicKeyInfo.getInstance(subjectKeyPair.getPublic().getEncoded()));
final CertRequest certRequest = new CertRequest(certReqId, certTemplateBuilder.build(), null);
final ProofOfPossession proofOfPossession =
CmpMessageHelper.generateProofOfPossession(certRequest, subjectKeyPair);
final CertReqMsg certReqMsg = new CertReqMsg(certRequest, proofOfPossession, null);
final CertReqMessages certReqMessages = new CertReqMessages(certReqMsg);
final PKIHeader pkiHeader =
generatePkiHeader(
subjectDn,
issuerDn,
CmpMessageHelper.protectionAlgoIdentifier(ITERATIONS, SALT),
senderKid);
final PKIBody pkiBody = new PKIBody(PKIBody.TYPE_INIT_REQ, certReqMessages);
return CmpMessageHelper.protectPkiMessage(
pkiHeader, pkiBody, initAuthPassword, ITERATIONS, SALT);
}
}
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