certService/src/main/java/org/onap/oom/certservice/cmpv2client/impl/CreateCertRequest.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  *  Copyright (C) 2020 Nordix Foundation.
   4  * ================================================================================
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  *
  17  * SPDX-License-Identifier: Apache-2.0
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.oom.certservice.cmpv2client.impl;
  22
  23 import static org.onap.oom.certservice.cmpv2client.impl.CmpUtil.createRandomBytes;
  24 import static org.onap.oom.certservice.cmpv2client.impl.CmpUtil.createRandomInt;
  25 import static org.onap.oom.certservice.cmpv2client.impl.CmpUtil.generatePkiHeader;
  26
  27 import java.security.KeyPair;
  28 import java.util.Date;
  29
  30 import org.bouncycastle.asn1.ASN1Integer;
  31 import org.bouncycastle.asn1.cmp.PKIBody;
  32 import org.bouncycastle.asn1.cmp.PKIHeader;
  33 import org.bouncycastle.asn1.cmp.PKIMessage;
  34 import org.bouncycastle.asn1.crmf.CertReqMessages;
  35 import org.bouncycastle.asn1.crmf.CertReqMsg;
  36 import org.bouncycastle.asn1.crmf.CertRequest;
  37 import org.bouncycastle.asn1.crmf.CertTemplateBuilder;
  38 import org.bouncycastle.asn1.crmf.ProofOfPossession;
  39 import org.bouncycastle.asn1.x500.X500Name;
  40 import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
  41 import org.bouncycastle.asn1.x509.GeneralName;
  42 import org.bouncycastle.asn1.x509.SubjectPublicKeyInfo;
  43 import org.bouncycastle.operator.DefaultSignatureAlgorithmIdentifierFinder;
  44 import org.onap.oom.certservice.cmpv2client.exceptions.CmpClientException;
  45
  46 /**
  47  * Implementation of the CmpClient Interface conforming to RFC4210 (Certificate Management Protocol
  48  * (CMP)) and RFC4211 (Certificate Request Message Format (CRMF)) standards.
  49  */
  50 class CreateCertRequest {
  51
  52     private X500Name issuerDn;
  53     private X500Name subjectDn;
  54     private GeneralName[] sansArray;
  55     private KeyPair subjectKeyPair;
  56     private Date notBefore;
  57     private Date notAfter;
  58     private String initAuthPassword;
  59     private String senderKid;
  60
  61     private static final int ITERATIONS = createRandomInt(1000);
  62     private static final byte[] SALT = createRandomBytes();
  63     private final int certReqId = createRandomInt(Integer.MAX_VALUE);
  64     private final AlgorithmIdentifier signingAlgorithm = new DefaultSignatureAlgorithmIdentifierFinder()
  65             .find("SHA256withRSA");
  66
  67     public void setIssuerDn(X500Name issuerDn) {
  68         this.issuerDn = issuerDn;
  69     }
  70
  71     public void setSubjectDn(X500Name subjectDn) {
  72         this.subjectDn = subjectDn;
  73     }
  74
  75     public void setSansArray(GeneralName[] sansArray) {
  76         this.sansArray = sansArray;
  77     }
  78
  79     public void setSubjectKeyPair(KeyPair subjectKeyPair) {
  80         this.subjectKeyPair = subjectKeyPair;
  81     }
  82
  83     public void setNotBefore(Date notBefore) {
  84         this.notBefore = notBefore;
  85     }
  86
  87     public void setNotAfter(Date notAfter) {
  88         this.notAfter = notAfter;
  89     }
  90
  91     public void setInitAuthPassword(String initAuthPassword) {
  92         this.initAuthPassword = initAuthPassword;
  93     }
  94
  95     public void setSenderKid(String senderKid) {
  96         this.senderKid = senderKid;
  97     }
  98
  99     /**
 100      * Method to create {@link PKIMessage} from {@link CertRequest},{@link ProofOfPossession}, {@link
 101      * CertReqMsg}, {@link CertReqMessages}, {@link PKIHeader} and {@link PKIBody}.
 102      *
 103      * @return {@link PKIMessage}
 104      */
 105     public PKIMessage generateCertReq() throws CmpClientException {
 106         final CertTemplateBuilder certTemplateBuilder =
 107                 new CertTemplateBuilder()
 108                         .setIssuer(issuerDn)
 109                         .setSubject(subjectDn)
 110                         .setExtensions(CmpMessageHelper.generateExtension(sansArray))
 111                         .setValidity(CmpMessageHelper.generateOptionalValidity(notBefore, notAfter))
 112                         .setVersion(2)
 113                         .setSerialNumber(new ASN1Integer(0L))
 114                         .setSigningAlg(signingAlgorithm)
 115                         .setPublicKey(
 116                                 SubjectPublicKeyInfo.getInstance(subjectKeyPair.getPublic().getEncoded()));
 117
 118         final CertRequest certRequest = new CertRequest(certReqId, certTemplateBuilder.build(), null);
 119         final ProofOfPossession proofOfPossession =
 120                 CmpMessageHelper.generateProofOfPossession(certRequest, subjectKeyPair);
 121
 122         final CertReqMsg certReqMsg = new CertReqMsg(certRequest, proofOfPossession, null);
 123         final CertReqMessages certReqMessages = new CertReqMessages(certReqMsg);
 124
 125         final PKIHeader pkiHeader =
 126                 generatePkiHeader(
 127                         subjectDn,
 128                         issuerDn,
 129                         CmpMessageHelper.protectionAlgoIdentifier(ITERATIONS, SALT),
 130                         senderKid);
 131         final PKIBody pkiBody = new PKIBody(PKIBody.TYPE_INIT_REQ, certReqMessages);
 132
 133         return CmpMessageHelper.protectPkiMessage(
 134                 pkiHeader, pkiBody, initAuthPassword, ITERATIONS, SALT);
 135     }
 136 }