org.keycloak.authentication.authenticators.x509.CertificateValidator クラス

org.keycloak.authentication.authenticators.x509.CertificateValidator 連携図

クラス
class	BouncyCastleOCSPChecker
class	CertificateValidatorBuilder
class	CRLFileLoader
class	CRLLoaderImpl
class	CRLLoaderProxy
enum	KeyUsageBits
class	LdapContext
class	OCSPChecker

公開メンバ関数
	CertificateValidator ()
CertificateValidator	validateKeyUsage () throws GeneralSecurityException
CertificateValidator	validateExtendedKeyUsage () throws GeneralSecurityException
CertificateValidator	checkRevocationStatus () throws GeneralSecurityException

限定公開メンバ関数
	CertificateValidator (X509Certificate[] certChain, int keyUsageBits, List< String > extendedKeyUsage, boolean cRLCheckingEnabled, boolean cRLDPCheckingEnabled, CRLLoaderImpl crlLoader, boolean oCSPCheckingEnabled, OCSPChecker ocspChecker)

変数
X509Certificate []	_certChain
int	_keyUsageBits
List< String >	_extendedKeyUsage
boolean	_crlCheckingEnabled
boolean	_crldpEnabled
CRLLoaderImpl	_crlLoader
boolean	_ocspEnabled
OCSPChecker	ocspChecker

非公開メンバ関数
void	checkRevocationUsingOCSP (X509Certificate[] certs) throws GeneralSecurityException

静的非公開メンバ関数
static void	validateKeyUsage (X509Certificate[] certs, int expected) throws GeneralSecurityException
static void	validateExtendedKeyUsage (X509Certificate[] certs, List< String > expectedEKU) throws GeneralSecurityException
static void	checkRevocationStatusUsingCRL (X509Certificate[] certs, CRLLoaderImpl crLoader) throws GeneralSecurityException
static List< String >	getCRLDistributionPoints (X509Certificate cert)
static void	checkRevocationStatusUsingCRLDistributionPoints (X509Certificate[] certs) throws GeneralSecurityException

静的非公開変数類
static final ServicesLogger	logger = ServicesLogger.LOGGER

詳解

著者

Peter Nalyvayko

バージョン

Revision

1

日付

7/30/2016

構築子と解体子

CertificateValidator() [1/2]

org.keycloak.authentication.authenticators.x509.CertificateValidator.CertificateValidator ( )

inline

                                  {

    }

CertificateValidator() [2/2]

org.keycloak.authentication.authenticators.x509.CertificateValidator.CertificateValidator ( X509Certificate []  certChain, int  keyUsageBits, List< String >  extendedKeyUsage, boolean  cRLCheckingEnabled, boolean  cRLDPCheckingEnabled, CRLLoaderImpl  crlLoader, boolean  oCSPCheckingEnabled, OCSPChecker  ocspChecker  )

inlineprotected

                                                            {
        _certChain = certChain;
        _keyUsageBits = keyUsageBits;
        _extendedKeyUsage = extendedKeyUsage;
        _crlCheckingEnabled = cRLCheckingEnabled;
        _crldpEnabled = cRLDPCheckingEnabled;
        _crlLoader = crlLoader;
        _ocspEnabled = oCSPCheckingEnabled;
        this.ocspChecker = ocspChecker;

        if (ocspChecker == null)
            throw new IllegalArgumentException("ocspChecker");
    }

関数詳解

checkRevocationStatus()

CertificateValidator org.keycloak.authentication.authenticators.x509.CertificateValidator.checkRevocationStatus ( ) throws GeneralSecurityException

inline

                                                                                        {
        if (!(_crlCheckingEnabled || _ocspEnabled)) {
            return this;
        }
        if (_crlCheckingEnabled) {
            if (!_crldpEnabled) {
                checkRevocationStatusUsingCRL(_certChain, _crlLoader /*"crl.pem"*/);
            } else {
                checkRevocationStatusUsingCRLDistributionPoints(_certChain);
            }
        }
        if (_ocspEnabled) {
            checkRevocationUsingOCSP(_certChain);
        }
        return this;
    }

checkRevocationStatusUsingCRL()

static void org.keycloak.authentication.authenticators.x509.CertificateValidator.checkRevocationStatusUsingCRL ( X509Certificate []  certs, CRLLoaderImpl  crLoader  ) throws GeneralSecurityException

inlinestaticprivate

                                                                                                                                       {
        Collection<X509CRL> crlColl = crLoader.getX509CRLs();
        if (crlColl != null && crlColl.size() > 0) {
            for (X509CRL it : crlColl) {
                if (it.isRevoked(certs[0])) {
                    String message = String.format("Certificate has been revoked, certificate's subject: %s", certs[0].getSubjectDN().getName());
                    logger.debug(message);
                    throw new GeneralSecurityException(message);
                }
            }
        }
    }

checkRevocationStatusUsingCRLDistributionPoints()

static void org.keycloak.authentication.authenticators.x509.CertificateValidator.checkRevocationStatusUsingCRLDistributionPoints ( X509Certificate []  certs ) throws GeneralSecurityException

inlinestaticprivate

                                                                                                                                 {

        List<String> distributionPoints = getCRLDistributionPoints(certs[0]);
        if (distributionPoints == null || distributionPoints.size() == 0) {
            throw new GeneralSecurityException("Could not find any CRL distribution points in the certificate, unable to check the certificate revocation status using CRL/DP.");
        }
        for (String dp : distributionPoints) {
            logger.tracef("CRL Distribution point: \"%s\"", dp);
            checkRevocationStatusUsingCRL(certs, new CRLFileLoader(dp));
        }
    }

checkRevocationUsingOCSP()

void org.keycloak.authentication.authenticators.x509.CertificateValidator.checkRevocationUsingOCSP ( X509Certificate []  certs ) throws GeneralSecurityException

inlineprivate

                                                                                                   {

        if (certs.length < 2) {
            // OCSP requires a responder certificate to verify OCSP
            // signed response.
            String message = "OCSP requires a responder certificate. OCSP cannot be used to verify the revocation status of self-signed certificates.";
            throw new GeneralSecurityException(message);
        }

        for (X509Certificate cert : certs) {
            logger.debugf("Certificate: %s", cert.getSubjectDN().getName());
        }

        OCSPUtils.OCSPRevocationStatus rs = ocspChecker.check(certs[0], certs[1]);

        if (rs == null) {
            throw new GeneralSecurityException("Unable to check client revocation status using OCSP");
        }

        if (rs.getRevocationStatus() == OCSPUtils.RevocationStatus.UNKNOWN) {
            throw new GeneralSecurityException("Unable to determine certificate's revocation status.");
        }
        else if (rs.getRevocationStatus() == OCSPUtils.RevocationStatus.REVOKED) {

            StringBuilder sb = new StringBuilder();
            sb.append("Certificate's been revoked.");
            sb.append("\n");
            sb.append(rs.getRevocationReason().toString());
            sb.append("\n");
            sb.append(String.format("Revoked on: %s",rs.getRevocationTime().toString()));

            throw new GeneralSecurityException(sb.toString());
        }
    }

getCRLDistributionPoints()

static List<String> org.keycloak.authentication.authenticators.x509.CertificateValidator.getCRLDistributionPoints ( X509Certificate  cert )

inlinestaticprivate

                                                                               {
        try {
            return CRLUtils.getCRLDistributionPoints(cert);
        }
        catch(IOException e) {
            logger.error(e.getMessage());
        }
        return new ArrayList<>();
    }

validateExtendedKeyUsage() [1/2]

static void org.keycloak.authentication.authenticators.x509.CertificateValidator.validateExtendedKeyUsage ( X509Certificate []  certs, List< String >  expectedEKU  ) throws GeneralSecurityException

inlinestaticprivate

                                                                                                                                    {
        if (expectedEKU == null || expectedEKU.size() == 0) {
            logger.debug("Extended Key Usage validation is not enabled.");
            return;
        }
        List<String> extendedKeyUsage = certs[0].getExtendedKeyUsage();
        if (extendedKeyUsage == null) {
            String message = "Extended key usage extension is expected, but unavailable";
            throw new GeneralSecurityException(message);
        }

        boolean isCritical = false;
        Set critSet = certs[0].getCriticalExtensionOIDs();
        if (critSet != null) {
            isCritical = critSet.contains("2.5.29.37");
        }

        List<String> ekuList = new LinkedList<>();
        extendedKeyUsage.forEach(s -> ekuList.add(s.toLowerCase()));

        for (String eku : expectedEKU) {
            if (!ekuList.contains(eku.toLowerCase())) {
                String message = String.format("Extended Key Usage \'%s\' is missing.", eku);
                if (isCritical) {
                    throw new GeneralSecurityException(message);
                }
                logger.warn(message);
            }
        }
    }

validateExtendedKeyUsage() [2/2]

CertificateValidator org.keycloak.authentication.authenticators.x509.CertificateValidator.validateExtendedKeyUsage ( ) throws GeneralSecurityException

inline

                                                                                           {
        validateExtendedKeyUsage(_certChain, _extendedKeyUsage);
        return this;
    }

validateKeyUsage() [1/2]

static void org.keycloak.authentication.authenticators.x509.CertificateValidator.validateKeyUsage ( X509Certificate []  certs, int  expected  ) throws GeneralSecurityException

inlinestaticprivate

                                                                                                                {
        boolean[] keyUsageBits = certs[0].getKeyUsage();
        if (keyUsageBits == null) {
            if (expected != 0) {
                String message = "Key usage extension is expected, but unavailable.";
                throw new GeneralSecurityException(message);
            }
            return;
        }

        boolean isCritical = false;
        Set critSet = certs[0].getCriticalExtensionOIDs();
        if (critSet != null) {
            isCritical = critSet.contains("2.5.29.15");
        }

        int n = expected;

        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < keyUsageBits.length; i++, n >>= 1) {
            boolean value = keyUsageBits[i];
            if ((n & 1) == 1 && !value) {
                String message = String.format("Key Usage bit \'%s\' is not set.", CertificateValidator.KeyUsageBits.fromValue(i).getName());
                if (sb.length() > 0) sb.append("\n");
                sb.append(message);

                logger.warn(message);
            }
        }
        if (sb.length() > 0) {
            if (isCritical) {
                throw new GeneralSecurityException(sb.toString());
            }
        }
    }

validateKeyUsage() [2/2]

CertificateValidator org.keycloak.authentication.authenticators.x509.CertificateValidator.validateKeyUsage ( ) throws GeneralSecurityException

inline

                                                                                   {
        validateKeyUsage(_certChain, _keyUsageBits);
        return this;
    }

メンバ詳解

_certChain

X509Certificate [] org.keycloak.authentication.authenticators.x509.CertificateValidator._certChain

package

_crlCheckingEnabled

boolean org.keycloak.authentication.authenticators.x509.CertificateValidator._crlCheckingEnabled

package

_crldpEnabled

boolean org.keycloak.authentication.authenticators.x509.CertificateValidator._crldpEnabled

package

_crlLoader

CRLLoaderImpl org.keycloak.authentication.authenticators.x509.CertificateValidator._crlLoader

package

_extendedKeyUsage

List<String> org.keycloak.authentication.authenticators.x509.CertificateValidator._extendedKeyUsage

package

_keyUsageBits

int org.keycloak.authentication.authenticators.x509.CertificateValidator._keyUsageBits

package

_ocspEnabled

boolean org.keycloak.authentication.authenticators.x509.CertificateValidator._ocspEnabled

package

logger

final ServicesLogger org.keycloak.authentication.authenticators.x509.CertificateValidator.logger = ServicesLogger.LOGGER

staticprivate

ocspChecker

OCSPChecker org.keycloak.authentication.authenticators.x509.CertificateValidator.ocspChecker

package

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このクラス詳解は次のファイルから抽出されました:

• D:/AppData/doxygen/keycloak/src/keycloak/src/main/java/org/keycloak/authentication/authenticators/x509/CertificateValidator.java