pack-priv final Class OpenSSLX509Certificate

Implements abstract java.security.cert.X509Certificate.checkValidity.

Doc from java.security.cert.X509Certificate.checkValidity.

Checks that the certificate is currently valid. It is if the current date and time are within the validity period given in the certificate.

The validity period consists of two date/time values: the first and last dates (and times) on which the certificate is valid. It is defined in ASN.1 as:

validity             Validity

Validity ::= SEQUENCE {
    notBefore      CertificateValidityDate,
    notAfter       CertificateValidityDate }

CertificateValidityDate ::= CHOICE {
    utcTime        UTCTime,
    generalTime    GeneralizedTime }

Annotations

@Override

Exceptions

CertificateExpiredException:

if the certificate has expired.

CertificateNotYetValidException:

if the certificate is not yet valid.

Implements abstract java.security.cert.X509Certificate.checkValidity.

Doc from java.security.cert.X509Certificate.checkValidity.

Checks that the given date is within the certificate's validity period. In other words, this determines whether the certificate would be valid at the given date/time.

Parameters

date:Date

the Date to check against to see if this certificate is valid at that date/time.

Annotations

@Override

Exceptions

CertificateExpiredException:

if the certificate has expired with respect to the date supplied.

CertificateNotYetValidException:

if the certificate is not yet valid with respect to the date supplied.

Implements abstract java.security.cert.X509Certificate.getBasicConstraints.

Doc from java.security.cert.X509Certificate.getBasicConstraints.

Gets the certificate constraints path length from the critical BasicConstraints extension, (OID = 2.5.29.19).

The basic constraints extension identifies whether the subject of the certificate is a Certificate Authority (CA) and how deep a certification path may exist through that CA. The pathLenConstraint field (see below) is meaningful only if cA is set to TRUE. In this case, it gives the maximum number of CA certificates that may follow this certificate in a certification path. A value of zero indicates that only an end-entity certificate may follow in the path.

The ASN.1 definition for this is:

BasicConstraints ::= SEQUENCE {
    cA                  BOOLEAN DEFAULT FALSE,
    pathLenConstraint   INTEGER (0..MAX) OPTIONAL }

Returns:int

the value of pathLenConstraint if the BasicConstraints extension is present in the certificate and the subject of the certificate is a CA, otherwise -1. If the subject of the certificate is a CA and pathLenConstraint does not appear, Integer.MAX_VALUE is returned to indicate that there is no limit to the allowed length of the certification path.

Annotations

@Override

Implements java.security.cert.X509Extension.getCriticalExtensionOIDs.

Doc from java.security.cert.X509Extension.getCriticalExtensionOIDs.

Gets a Set of the OID strings for the extension(s) marked CRITICAL in the certificate/CRL managed by the object implementing this interface. Here is sample code to get a Set of critical extensions from an X509Certificate and print the OIDs:

X509Certificate cert = null;
try (InputStream inStrm = new FileInputStream("DER-encoded-Cert")) {
    CertificateFactory cf = CertificateFactory.getInstance("X.509");
    cert = (X509Certificate)cf.generateCertificate(inStrm);
}

Set<String> critSet = cert.getCriticalExtensionOIDs();
if (critSet != null && !critSet.isEmpty()) {
    System.out.println("Set of critical extensions:");
    for (String oid : critSet) {
        System.out.println(oid);
    }
}

Returns:Set<String>

a Set (or an empty Set if none are marked critical) of the extension OID strings for extensions that are marked critical. If there are no extensions present at all, then this method returns null.

Annotations

@Override

Implements abstract java.security.cert.Certificate.getEncoded.

Doc from java.security.cert.Certificate.getEncoded.

Returns the encoded form of this certificate. It is assumed that each certificate type would have only a single form of encoding; for example, X.509 certificates would be encoded as ASN.1 DER.

Returns:byte[]

the encoded form of this certificate

Annotations

@Override

Implements java.security.cert.X509Extension.getExtensionValue.

Doc from java.security.cert.X509Extension.getExtensionValue.

Gets the DER-encoded OCTET string for the extension value (extnValue) identified by the passed-in oid String. The oid string is represented by a set of nonnegative whole numbers separated by periods.

For example:

Parameters

oid:String

the Object Identifier value for the extension.

Returns:byte[]

the DER-encoded octet string of the extension value or null if it is not present.

Annotations

@Override

Implements abstract java.security.cert.X509Certificate.getIssuerDN.

Doc from java.security.cert.X509Certificate.getIssuerDN.

Gets the issuer (issuer distinguished name) value from the certificate. The issuer name identifies the entity that signed (and issued) the certificate.

The issuer name field contains an X.500 distinguished name (DN). The ASN.1 definition for this is:

issuer    Name

Name ::= CHOICE { RDNSequence }
RDNSequence ::= SEQUENCE OF RelativeDistinguishedName
RelativeDistinguishedName ::=
    SET OF AttributeValueAssertion

AttributeValueAssertion ::= SEQUENCE {
                              AttributeType,
                              AttributeValue }
AttributeType ::= OBJECT IDENTIFIER
AttributeValue ::= ANY

Returns:Principal

a Principal whose name is the issuer distinguished name.

Annotations

@Override

@Deprecated

Implements abstract java.security.cert.X509Certificate.getIssuerUniqueID.

Doc from java.security.cert.X509Certificate.getIssuerUniqueID.

Gets the issuerUniqueID value from the certificate. The issuer unique identifier is present in the certificate to handle the possibility of reuse of issuer names over time. RFC 5280 recommends that names not be reused and that conforming certificates not make use of unique identifiers. Applications conforming to that profile should be capable of parsing unique identifiers and making comparisons.

The ASN.1 definition for this is:

issuerUniqueID  [1]  IMPLICIT UniqueIdentifier OPTIONAL

UniqueIdentifier  ::=  BIT STRING

Returns:boolean[]

the issuer unique identifier or null if it is not present in the certificate.

Annotations

@Override

Implements abstract java.security.cert.X509Certificate.getKeyUsage.

Doc from java.security.cert.X509Certificate.getKeyUsage.

Gets a boolean array representing bits of the KeyUsage extension, (OID = 2.5.29.15). The key usage extension defines the purpose (e.g., encipherment, signature, certificate signing) of the key contained in the certificate. The ASN.1 definition for this is:

KeyUsage ::= BIT STRING {
    digitalSignature        (0),
    nonRepudiation          (1),
    keyEncipherment         (2),
    dataEncipherment        (3),
    keyAgreement            (4),
    keyCertSign             (5),
    cRLSign                 (6),
    encipherOnly            (7),
    decipherOnly            (8) }

Returns:boolean[]

the KeyUsage extension of this certificate, represented as an array of booleans. The order of KeyUsage values in the array is the same as in the above ASN.1 definition. The array will contain a value for each KeyUsage defined above. If the KeyUsage list encoded in the certificate is longer than the above list, it will not be truncated. Returns null if this certificate does not contain a KeyUsage extension.

Annotations

@Override

Implements java.security.cert.X509Extension.getNonCriticalExtensionOIDs.

Doc from java.security.cert.X509Extension.getNonCriticalExtensionOIDs.

Gets a Set of the OID strings for the extension(s) marked NON-CRITICAL in the certificate/CRL managed by the object implementing this interface. Here is sample code to get a Set of non-critical extensions from an X509CRL revoked certificate entry and print the OIDs:

CertificateFactory cf = null;
X509CRL crl = null;
try (InputStream inStrm = new FileInputStream("DER-encoded-CRL")) {
    cf = CertificateFactory.getInstance("X.509");
    crl = (X509CRL)cf.generateCRL(inStrm);
}

byte[] certData = <DER-encoded certificate data>
ByteArrayInputStream bais = new ByteArrayInputStream(certData);
X509Certificate cert = (X509Certificate)cf.generateCertificate(bais);
X509CRLEntry badCert =
             crl.getRevokedCertificate(cert.getSerialNumber());

if (badCert != null) {
    Set<String> nonCritSet = badCert.getNonCriticalExtensionOIDs();
    if (nonCritSet != null)
        for (String oid : nonCritSet) {
            System.out.println(oid);
        }
}

Returns:Set<String>

a Set (or an empty Set if none are marked non-critical) of the extension OID strings for extensions that are marked non-critical. If there are no extensions present at all, then this method returns null.

Annotations

@Override

Implements abstract java.security.cert.X509Certificate.getNotAfter.

Doc from java.security.cert.X509Certificate.getNotAfter.

Gets the notAfter date from the validity period of the certificate. See getNotBefore for relevant ASN.1 definitions.

Returns:Date

the end date of the validity period.

Annotations

@Override

Implements abstract java.security.cert.X509Certificate.getNotBefore.

Doc from java.security.cert.X509Certificate.getNotBefore.

Gets the notBefore date from the validity period of the certificate. The relevant ASN.1 definitions are:

validity             Validity

Validity ::= SEQUENCE {
    notBefore      CertificateValidityDate,
    notAfter       CertificateValidityDate }

CertificateValidityDate ::= CHOICE {
    utcTime        UTCTime,
    generalTime    GeneralizedTime }

Returns:Date

the start date of the validity period.

Annotations

@Override

Implements abstract java.security.cert.Certificate.getPublicKey.

Doc from java.security.cert.Certificate.getPublicKey.

Gets the public key from this certificate.

Returns:PublicKey

the public key.

Annotations

@Override

Implements abstract java.security.cert.X509Certificate.getSerialNumber.

Doc from java.security.cert.X509Certificate.getSerialNumber.

Gets the serialNumber value from the certificate. The serial number is an integer assigned by the certification authority to each certificate. It must be unique for each certificate issued by a given CA (i.e., the issuer name and serial number identify a unique certificate). The ASN.1 definition for this is:

serialNumber     CertificateSerialNumber

CertificateSerialNumber  ::=  INTEGER

Returns:BigInteger

the serial number.

Annotations

@Override

Implements abstract java.security.cert.X509Certificate.getSigAlgName.

Doc from java.security.cert.X509Certificate.getSigAlgName.

Gets the signature algorithm name for the certificate signature algorithm. An example is the string "SHA256withRSA". The ASN.1 definition for this is:

signatureAlgorithm   AlgorithmIdentifier

AlgorithmIdentifier  ::=  SEQUENCE  {
    algorithm               OBJECT IDENTIFIER,
    parameters              ANY DEFINED BY algorithm OPTIONAL  }
                            -- contains a value of the type
                            -- registered for use with the
                            -- algorithm object identifier value

The algorithm name is determined from the algorithm OID string.

Returns:String

the signature algorithm name.

Annotations

@Override

Implements abstract java.security.cert.X509Certificate.getSigAlgOID.

Doc from java.security.cert.X509Certificate.getSigAlgOID.

Gets the signature algorithm OID string from the certificate. An OID is represented by a set of nonnegative whole numbers separated by periods. For example, the string "1.2.840.10040.4.3" identifies the SHA-1 with DSA signature algorithm defined in RFC 3279: Algorithms and Identifiers for the Internet X.509 Public Key Infrastructure Certificate and CRL Profile.

See getSigAlgName for relevant ASN.1 definitions.

Returns:String

the signature algorithm OID string.

Annotations

@Override

Implements abstract java.security.cert.X509Certificate.getSigAlgParams.

Doc from java.security.cert.X509Certificate.getSigAlgParams.

Gets the DER-encoded signature algorithm parameters from this certificate's signature algorithm. In most cases, the signature algorithm parameters are null; the parameters are usually supplied with the certificate's public key. If access to individual parameter values is needed then use AlgorithmParameters and instantiate with the name returned by getSigAlgName.

See getSigAlgName for relevant ASN.1 definitions.

Returns:byte[]

the DER-encoded signature algorithm parameters, or null if no parameters are present.

Annotations

@Override

Implements abstract java.security.cert.X509Certificate.getSignature.

Doc from java.security.cert.X509Certificate.getSignature.

Gets the signature value (the raw signature bits) from the certificate. The ASN.1 definition for this is:

signature     BIT STRING

Returns:byte[]

the signature.

Annotations

@Override

Implements abstract java.security.cert.X509Certificate.getSubjectDN.

Doc from java.security.cert.X509Certificate.getSubjectDN.

Gets the subject (subject distinguished name) value from the certificate. If the subject value is empty, then the getName() method of the returned Principal object returns an empty string ("").

The ASN.1 definition for this is:

subject    Name

See getIssuerDN for Name and other relevant definitions.

Returns:Principal

a Principal whose name is the subject name.

Annotations

@Override

@Deprecated

Implements abstract java.security.cert.X509Certificate.getSubjectUniqueID.

Doc from java.security.cert.X509Certificate.getSubjectUniqueID.

Gets the subjectUniqueID value from the certificate.

The ASN.1 definition for this is:

subjectUniqueID  [2]  IMPLICIT UniqueIdentifier OPTIONAL

UniqueIdentifier  ::=  BIT STRING

Returns:boolean[]

the subject unique identifier or null if it is not present in the certificate.

Annotations

@Override

Implements abstract java.security.cert.X509Certificate.getTBSCertificate.

Doc from java.security.cert.X509Certificate.getTBSCertificate.

Gets the DER-encoded certificate information, the tbsCertificate from this certificate. This can be used to verify the signature independently.

Returns:byte[]

the DER-encoded certificate information.

Annotations

@Override

Exceptions

CertificateEncodingException:

if an encoding error occurs.

Implements abstract java.security.cert.X509Certificate.getVersion.

Doc from java.security.cert.X509Certificate.getVersion.

Gets the version (version number) value from the certificate. The ASN.1 definition for this is:

version  [0] EXPLICIT Version DEFAULT v1

Version ::=  INTEGER  {  v1(0), v2(1), v3(2)  }

Returns:int

the version number, i.e. 1, 2 or 3.

Annotations

@Override

Implements java.security.cert.X509Extension.hasUnsupportedCriticalExtension.

Doc from java.security.cert.X509Extension.hasUnsupportedCriticalExtension.

Check if there is a critical extension that is not supported.

Returns:boolean

true if a critical extension is found that is not supported, otherwise false.

Annotations

@Override

Implements abstract java.security.cert.Certificate.toString.

Doc from java.security.cert.Certificate.toString.

Returns a string representation of this certificate.

Returns:String

a string representation of this certificate.

Annotations

@Override

Implements abstract java.security.cert.Certificate.verify.

Doc from java.security.cert.Certificate.verify.

Verifies that this certificate was signed using the private key that corresponds to the specified public key.

Parameters

key:PublicKey

the PublicKey used to carry out the verification.

Annotations

@Override

Exceptions

CertificateException:

on encoding errors.

NoSuchAlgorithmException:

on unsupported signature algorithms.

InvalidKeyException:

on incorrect key.

NoSuchProviderException:

if there's no default provider.

SignatureException:

on signature errors.

Implements abstract java.security.cert.Certificate.verify.

Doc from java.security.cert.Certificate.verify.

Verifies that this certificate was signed using the private key that corresponds to the specified public key. This method uses the signature verification engine supplied by the specified provider.

Parameters

key:PublicKey

the PublicKey used to carry out the verification.

sigProvider:String

the name of the signature provider.

Annotations

@Override

Exceptions

CertificateException:

on encoding errors.

NoSuchAlgorithmException:

on unsupported signature algorithms.

InvalidKeyException:

on incorrect key.

NoSuchProviderException:

on incorrect provider.

SignatureException:

on signature errors.