OCSP responder to serve status check for itself using latest CRL #4504
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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) 2023 Red Hat, Inc. | ||
| // All rights reserved. | ||
| // --- END COPYRIGHT BLOCK --- | ||
| package com.netscape.cms.ocsp; | ||
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| import java.io.IOException; | ||
| import java.security.cert.CertificateException; | ||
| import java.security.cert.X509CRLEntry; | ||
| import java.util.Arrays; | ||
| import java.util.Enumeration; | ||
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| import org.mozilla.jss.crypto.X509Certificate; | ||
| import org.mozilla.jss.netscape.security.x509.AuthorityKeyIdentifierExtension; | ||
| import org.mozilla.jss.netscape.security.x509.KeyIdentifier; | ||
| import org.mozilla.jss.netscape.security.x509.PKIXExtensions; | ||
| import org.mozilla.jss.netscape.security.x509.SubjectKeyIdentifierExtension; | ||
| import org.mozilla.jss.netscape.security.x509.X509CRLImpl; | ||
| import org.mozilla.jss.netscape.security.x509.X509CertImpl; | ||
| import org.mozilla.jss.ssl.SSLCertificateApprovalCallback; | ||
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| import com.netscape.certsrv.base.EBaseException; | ||
| import com.netscape.certsrv.dbs.crldb.ICRLIssuingPointRecord; | ||
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| public class CRLLdapValidator implements SSLCertificateApprovalCallback { | ||
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| public static org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(CRLLdapValidator.class); | ||
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| private LDAPStore crlStore; | ||
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| public CRLLdapValidator(LDAPStore crlStore) { | ||
| super(); | ||
| this.crlStore = crlStore; | ||
| } | ||
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| @Override | ||
| public boolean approve(X509Certificate certificate, ValidityStatus currentStatus) { | ||
| logger.info("CRLLdapValidator: validate of peer's certificate for the connection " + certificate.getSubjectDN()); | ||
| ICRLIssuingPointRecord pt = null; | ||
| try { | ||
| X509CertImpl peerCert = new X509CertImpl(certificate.getEncoded()); | ||
| Enumeration<ICRLIssuingPointRecord> eCRL = crlStore.searchAllCRLIssuingPointRecord(-1); | ||
| AuthorityKeyIdentifierExtension aPeeExt = (AuthorityKeyIdentifierExtension) peerCert.getExtension(PKIXExtensions.AuthorityKey_Id.toString()); | ||
| if(aPeeExt == null) { | ||
| logger.error("CRLLdapValidator: the certificate has not Authority Key Identifier Extension. CRL verification cannot be done."); | ||
| return false; | ||
| } | ||
| while (eCRL.hasMoreElements() && pt == null) { | ||
| ICRLIssuingPointRecord tPt = eCRL.nextElement(); | ||
| logger.debug("CRLLdapValidator: CRL check issuer " + tPt.getId()); | ||
| X509CertImpl caCert = new X509CertImpl(tPt.getCACert()); | ||
| try { | ||
| SubjectKeyIdentifierExtension sCaExt = (SubjectKeyIdentifierExtension) caCert.getExtension(PKIXExtensions.SubjectKey_Id.toString()); | ||
| if(sCaExt == null) { | ||
| logger.error("CRLLdapValidator: signing certificate missing Subject Key Identifier. Skip CA " + caCert.getName()); | ||
| continue; | ||
| } | ||
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| KeyIdentifier sCaKeyId = (KeyIdentifier) sCaExt.get(SubjectKeyIdentifierExtension.KEY_ID); | ||
| KeyIdentifier aPeerKeyId = (KeyIdentifier) aPeeExt.get(AuthorityKeyIdentifierExtension.KEY_ID); | ||
| if(Arrays.equals(sCaKeyId.getIdentifier(), aPeerKeyId.getIdentifier())) { | ||
| pt = tPt; | ||
| } | ||
| } catch (IOException e) { | ||
| logger.error("CRLLdapValidator: problem extracting key from SKI/AKI"); | ||
| } | ||
| } | ||
| } catch (EBaseException | CertificateException e) { | ||
| logger.error("CRLLdapValidator: problem find CRL issuing point. " + e.getMessage(), e); | ||
| return false; | ||
| } | ||
| if (pt == null) { | ||
| logger.error("CRLLdapValidator: CRL issuing point not found for " + certificate.getIssuerDN()); | ||
| return false; | ||
| } | ||
| try { | ||
| X509CRLImpl crl = new X509CRLImpl(pt.getCRL()); | ||
| X509CRLEntry crlentry = crl.getRevokedCertificate(certificate.getSerialNumber()); | ||
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| if (crlentry == null) { | ||
| if (crlStore.isNotFoundGood()) { | ||
| return true; | ||
| } | ||
| } | ||
| } catch (Exception e) { | ||
| logger.error("CRLLdapValidator: crl check error. " + e.getMessage(), e); | ||
| } | ||
| logger.error("CRLLdapValidator: peer certificate not valid"); | ||
| return false; | ||
| } | ||
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| } |
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The option
ocsp.store.ldapStore.validateConnCertWithCRLenables the revocation verification of peer certificates using the CRL stored in the LDAP shared with the CA.When it is set to
true(default value), the peer certificate of all the outcome connections from the OCSP subsystem are verified with the CRL.If the option
auths.revocationChecking.enabledis also set totruethe peer certificate ot all the income connections to the OCSP subsystem are verified with the CRL.There was a problem hiding this comment.
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How about put the info right here in the code where PROP_VALIDATE_CONNECTION_WITH_CRL = "validateConnCertWithCRL" is assigned? Comments in code are longer lasting and provide info others later. I will also be using it for the doc changes.