IT. Expert System.

Android Reference

X509CertImpl

org.apache.harmony.security.provider.cert

Class X509CertImpl

java.lang.Object
- java.security.cert.Certificate
- - java.security.cert.X509Certificate
  - - org.apache.harmony.security.provider.cert.X509CertImpl

All Implemented Interfaces:

Serializable, X509Extension
```
public final class X509CertImpl
extends X509Certificate
```
This class is an implementation of X509Certificate. It wraps the instance of org.apache.harmony.security.x509.Certificate built on the base of provided ASN.1 DER encoded form of Certificate structure (as specified in RFC 3280 http://www.ietf.org/rfc/rfc3280.txt).

See Also:
Certificate, X509Certificate, Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class java.security.cert.Certificate
  Certificate.CertificateRep

Constructor Summary

Constructors
Constructor and Description
`X509CertImpl(byte[] encoding)` Constructs the instance on the base of ASN.1 encoded form of X.509 certificate provided via array of bytes.
`X509CertImpl(Certificate certificate)` Constructs the instance on the base of existing Certificate object to be wrapped.
`X509CertImpl(InputStream in)` Constructs the instance on the base of ASN.1 encoded form of X.509 certificate provided via stream parameter.

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`checkValidity()` Checks whether the certificate is currently valid.
`void`	`checkValidity(Date date)` Checks whether the certificate is valid at the specified date.
`int`	`getBasicConstraints()` Returns the path length of the certificate constraints from the `BasicContraints` extension.
`Set<String>`	`getCriticalExtensionOIDs()` Returns the set of OIDs of the extension(s) marked as CRITICAL, that this implementation manages.
`byte[]`	`getEncoded()` Returns the encoded representation for this certificate.
`List<String>`	`getExtendedKeyUsage()` Returns a read-only list of OID strings representing the `ExtKeyUsageSyntax` field of the extended key usage extension.
`byte[]`	`getExtensionValue(String oid)` Returns the extension value as DER-encoded OCTET string for the specified OID.
`Collection<List<?>>`	`getIssuerAlternativeNames()` Returns a read-only list of the issuer alternative names from the `IssuerAltName` extension.
`Principal`	`getIssuerDN()` Returns the `issuer` (issuer distinguished name) as an implementation specific `Principal` object.
`boolean[]`	`getIssuerUniqueID()` Returns the `issuerUniqueID` from the certificate.
`X500Principal`	`getIssuerX500Principal()` Returns the `issuer` (issuer distinguished name) as an `X500Principal`.
`boolean[]`	`getKeyUsage()` Returns the `KeyUsage` extension as a `boolean` array.
`Set<String>`	`getNonCriticalExtensionOIDs()` Returns the set of OIDs of the extension(s) marked as NON-CRITICAL, that this implementation manages.
`Date`	`getNotAfter()` Returns the `notAfter` date of the validity period of the certificate.
`Date`	`getNotBefore()` Returns the `notBefore` date from the validity period of the certificate.
`PublicKey`	`getPublicKey()` Returns the public key corresponding to this certificate.
`BigInteger`	`getSerialNumber()` Returns the `serialNumber` of the certificate.
`String`	`getSigAlgName()` Returns the name of the algorithm for the certificate signature.
`String`	`getSigAlgOID()` Returns the OID of the signature algorithm from the certificate.
`byte[]`	`getSigAlgParams()` Returns the parameters of the signature algorithm in DER-encoded format.
`byte[]`	`getSignature()` Returns the raw signature bits from the certificate.
`Collection<List<?>>`	`getSubjectAlternativeNames()` Returns a read-only list of the subject alternative names from the `SubjectAltName` extension.
`Principal`	`getSubjectDN()` Returns the `subject` (subject distinguished name) as an implementation specific `Principal` object.
`boolean[]`	`getSubjectUniqueID()` Returns the `subjectUniqueID` from the certificate.
`X500Principal`	`getSubjectX500Principal()` Returns the `subject` (subject distinguished name) as an `X500Principal`.
`byte[]`	`getTBSCertificate()` Returns the `tbsCertificate` information from this certificate in DER-encoded format.
`int`	`getVersion()` Returns the certificates `version` (version number).
`boolean`	`hasUnsupportedCriticalExtension()` Returns whether this instance has an extension marked as CRITICAL that it cannot support.
`String`	`toString()` Returns a string containing a concise, human-readable description of the certificate.
`void`	`verify(PublicKey key)` Verifies that this certificate was signed with the given public key.
`void`	`verify(PublicKey key, String sigProvider)` Verifies that this certificate was signed with the given public key.

Methods inherited from class java.security.cert.Certificate
equals, getType, hashCode, writeReplace

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - X509CertImpl
```
public X509CertImpl(InputStream in)
             throws CertificateException
```
    Constructs the instance on the base of ASN.1 encoded form of X.509 certificate provided via stream parameter.
    
    Parameters:
    in - input stream containing ASN.1 encoded form of certificate.
    
    Throws:
    
    CertificateException - if some decoding problems occur.
  - X509CertImpl
```
public X509CertImpl(Certificate certificate)
```
    Constructs the instance on the base of existing Certificate object to be wrapped.
  - X509CertImpl
```
public X509CertImpl(byte[] encoding)
             throws IOException
```
    Constructs the instance on the base of ASN.1 encoded form of X.509 certificate provided via array of bytes.
    
    Parameters:
    encoding - byte array containing ASN.1 encoded form of certificate.
    
    Throws:
    
    IOException - if some decoding problems occur.
- Method Detail
  - checkValidity
```
public void checkValidity()
                   throws CertificateExpiredException,
                          CertificateNotYetValidException
```
    Description copied from class: X509Certificate
    Checks whether the certificate is currently valid.
    The validity defined in ASN.1:
```
 validity             Validity

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

 CertificateValidityDate ::= CHOICE {
      utcTime         UTCTime,
      generalTime     GeneralizedTime }
 
```
    Specified by:
    
    checkValidity in class X509Certificate
    
    Throws:
    
    CertificateExpiredException - if the certificate has expired.
    
    CertificateNotYetValidException - if the certificate is not yet valid.
  - checkValidity
```
public void checkValidity(Date date)
                   throws CertificateExpiredException,
                          CertificateNotYetValidException
```
    Description copied from class: X509Certificate
    
    Checks whether the certificate is valid at the specified date.
    
    Specified by:
    
    checkValidity in class X509Certificate
    
    Parameters:
    date - the date to check the validity against.
    
    Throws:
    
    CertificateExpiredException - if the certificate has expired.
    
    CertificateNotYetValidException - if the certificate is not yet valid.
    See Also:
    X509Certificate.checkValidity()
  - getVersion
```
public int getVersion()
```
    Description copied from class: X509Certificate
    Returns the certificates version (version number).
    The version defined is ASN.1:
```
 Version ::=  INTEGER  {  v1(0), v2(1), v3(2)  }
 
```
    Specified by:
    
    getVersion in class X509Certificate
    
    Returns:
    the version number.
  - getSerialNumber
```
public BigInteger getSerialNumber()
```
    Description copied from class: X509Certificate
    Returns the serialNumber of the certificate.
    The ASN.1 definition of serialNumber:
```
 CertificateSerialNumber  ::=  INTEGER
 
```
    Specified by:
    
    getSerialNumber in class X509Certificate
    
    Returns:
    the serial number.
  - getIssuerDN
```
public Principal getIssuerDN()
```
    Description copied from class: X509Certificate
    Returns the issuer (issuer distinguished name) as an implementation specific Principal object.
    The ASN.1 definition of issuer:
```
  issuer      Name

  Name ::= CHOICE {
      RDNSequence }

    RDNSequence ::= SEQUENCE OF RelativeDistinguishedName

    RelativeDistinguishedName ::= SET OF AttributeTypeAndValue

    AttributeTypeAndValue ::= SEQUENCE {
      type     AttributeType,
      value    AttributeValue }

    AttributeType ::= OBJECT IDENTIFIER

    AttributeValue ::= ANY DEFINED BY AttributeType
 
```
    replaced by: X509Certificate.getIssuerX500Principal().
    Specified by:
    
    getIssuerDN in class X509Certificate
    
    Returns:
    the issuer as an implementation specific Principal.
  - getIssuerX500Principal
```
public X500Principal getIssuerX500Principal()
```
    Description copied from class: X509Certificate
    
    Returns the issuer (issuer distinguished name) as an X500Principal.
    
    Overrides:
    
    getIssuerX500Principal in class X509Certificate
    
    Returns:
    the issuer (issuer distinguished name).
  - getSubjectDN
```
public Principal getSubjectDN()
```
    Description copied from class: X509Certificate
    Returns the subject (subject distinguished name) as an implementation specific Principal object.
    The ASN.1 definition of subject:
```
 subject      Name

  Name ::= CHOICE {
      RDNSequence }

    RDNSequence ::= SEQUENCE OF RelativeDistinguishedName

    RelativeDistinguishedName ::= SET OF AttributeTypeAndValue

    AttributeTypeAndValue ::= SEQUENCE {
      type     AttributeType,
      value    AttributeValue }

    AttributeType ::= OBJECT IDENTIFIER

    AttributeValue ::= ANY DEFINED BY AttributeType
 
```
    replaced by: X509Certificate.getSubjectX500Principal().
    Specified by:
    
    getSubjectDN in class X509Certificate
    
    Returns:
    the subject (subject distinguished name).
  - getSubjectX500Principal
```
public X500Principal getSubjectX500Principal()
```
    Description copied from class: X509Certificate
    
    Returns the subject (subject distinguished name) as an X500Principal.
    
    Overrides:
    
    getSubjectX500Principal in class X509Certificate
    
    Returns:
    the subject (subject distinguished name)
  - getNotBefore
```
public Date getNotBefore()
```
    Description copied from class: X509Certificate
    
    Returns the notBefore date from the validity period of the certificate.
    
    Specified by:
    
    getNotBefore in class X509Certificate
    
    Returns:
    the start of the validity period.
  - getNotAfter
```
public Date getNotAfter()
```
    Description copied from class: X509Certificate
    
    Returns the notAfter date of the validity period of the certificate.
    
    Specified by:
    
    getNotAfter in class X509Certificate
    
    Returns:
    the end of the validity period.
  - getTBSCertificate
```
public byte[] getTBSCertificate()
                         throws CertificateEncodingException
```
    Description copied from class: X509Certificate
    
    Returns the tbsCertificate information from this certificate in DER-encoded format.
    
    Specified by:
    
    getTBSCertificate in class X509Certificate
    
    Returns:
    the DER-encoded certificate information.
    
    Throws:
    
    CertificateEncodingException - if an error occurs in encoding
  - getSignature
```
public byte[] getSignature()
```
    Description copied from class: X509Certificate
    
    Returns the raw signature bits from the certificate.
    
    Specified by:
    
    getSignature in class X509Certificate
    
    Returns:
    the raw signature bits from the certificate.
  - getSigAlgName
```
public String getSigAlgName()
```
    Description copied from class: X509Certificate
    
    Returns the name of the algorithm for the certificate signature.
    
    Specified by:
    
    getSigAlgName in class X509Certificate
    
    Returns:
    the signature algorithm name.
  - getSigAlgOID
```
public String getSigAlgOID()
```
    Description copied from class: X509Certificate
    
    Returns the OID of the signature algorithm from the certificate.
    
    Specified by:
    
    getSigAlgOID in class X509Certificate
    
    Returns:
    the OID of the signature algorithm.
  - getSigAlgParams
```
public byte[] getSigAlgParams()
```
    Description copied from class: X509Certificate
    
    Returns the parameters of the signature algorithm in DER-encoded format.
    
    Specified by:
    
    getSigAlgParams in class X509Certificate
    
    Returns:
    the parameters of the signature algorithm, or null if none are used.
  - getIssuerUniqueID
```
public boolean[] getIssuerUniqueID()
```
    Description copied from class: X509Certificate
    
    Returns the issuerUniqueID from the certificate.
    
    Specified by:
    
    getIssuerUniqueID in class X509Certificate
    
    Returns:
    the issuerUniqueID or null if there's none in the certificate.
  - getSubjectUniqueID
```
public boolean[] getSubjectUniqueID()
```
    Description copied from class: X509Certificate
    
    Returns the subjectUniqueID from the certificate.
    
    Specified by:
    
    getSubjectUniqueID in class X509Certificate
    
    Returns:
    the subjectUniqueID or null if there's none in the certificate.
  - getKeyUsage
```
public boolean[] getKeyUsage()
```
    Description copied from class: X509Certificate
    Returns the KeyUsage extension as a boolean array.
    The ASN.1 definition of KeyUsage:
```
 KeyUsage ::= BIT STRING {
      digitalSignature        (0),
      nonRepudiation          (1),
      keyEncipherment         (2),
      dataEncipherment        (3),
      keyAgreement            (4),
      keyCertSign             (5),
      cRLSign                 (6),
      encipherOnly            (7),
      decipherOnly            (8) }

 
```
    Specified by:
    
    getKeyUsage in class X509Certificate
    
    Returns:
    the KeyUsage extension or null if there's none in the certificate.
  - getExtendedKeyUsage
```
public List<String> getExtendedKeyUsage()
                                 throws CertificateParsingException
```
    Description copied from class: X509Certificate
    
    Returns a read-only list of OID strings representing the ExtKeyUsageSyntax field of the extended key usage extension.
    
    Overrides:
    
    getExtendedKeyUsage in class X509Certificate
    
    Returns:
    the extended key usage extension, or null if there's none in the certificate.
    
    Throws:
    
    CertificateParsingException - if the extension decoding fails.
  - getBasicConstraints
```
public int getBasicConstraints()
```
    Description copied from class: X509Certificate
    
    Returns the path length of the certificate constraints from the BasicContraints extension.
    
    Specified by:
    
    getBasicConstraints in class X509Certificate
    
    Returns:
    the path length of the certificate constraints if the extension is present or -1 if the extension is not present. Integer.MAX_VALUE if there's not limit.
  - getSubjectAlternativeNames
```
public Collection<List<?>> getSubjectAlternativeNames()
                                               throws CertificateParsingException
```
    Description copied from class: X509Certificate
    Returns a read-only list of the subject alternative names from the SubjectAltName extension.
    The ASN.1 definition of SubjectAltName:
```
 SubjectAltName ::= GeneralNames

 GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName

 GeneralName ::= CHOICE {
      otherName                       [0]     AnotherName,
      rfc822Name                      [1]     IA5String,
      dNSName                         [2]     IA5String,
      x400Address                     [3]     ORAddress,
      directoryName                   [4]     Name,
      ediPartyName                    [5]     EDIPartyName,
      uniformResourceIdentifier       [6]     IA5String,
      iPAddress                       [7]     OCTET STRING,
      registeredID                    [8]     OBJECT IDENTIFIER }

 
```
    Overrides:
    
    getSubjectAlternativeNames in class X509Certificate
    
    Returns:
    the subject alternative names or null if there are none in the certificate.
    
    Throws:
    
    CertificateParsingException - if decoding of the extension fails.
  - getIssuerAlternativeNames
```
public Collection<List<?>> getIssuerAlternativeNames()
                                              throws CertificateParsingException
```
    Description copied from class: X509Certificate
    Returns a read-only list of the issuer alternative names from the IssuerAltName extension.
    The ASN.1 definition of IssuerAltName:
```
 IssuerAltName ::= GeneralNames

 GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName

 GeneralName ::= CHOICE {
      otherName                       [0]     AnotherName,
      rfc822Name                      [1]     IA5String,
      dNSName                         [2]     IA5String,
      x400Address                     [3]     ORAddress,
      directoryName                   [4]     Name,
      ediPartyName                    [5]     EDIPartyName,
      uniformResourceIdentifier       [6]     IA5String,
      iPAddress                       [7]     OCTET STRING,
      registeredID                    [8]     OBJECT IDENTIFIER }

 
```
    Overrides:
    
    getIssuerAlternativeNames in class X509Certificate
    
    Returns:
    the issuer alternative names of null if there are none in the certificate.
    
    Throws:
    
    CertificateParsingException - if decoding of the extension fails.
    See Also:
    method documentation for more information.
  - getEncoded
```
public byte[] getEncoded()
                  throws CertificateEncodingException
```
    Description copied from class: Certificate
    
    Returns the encoded representation for this certificate.
    
    Specified by:
    
    getEncoded in class Certificate
    
    Returns:
    the encoded representation for this certificate.
    
    Throws:
    
    CertificateEncodingException - if the encoding fails.
  - getPublicKey
```
public PublicKey getPublicKey()
```
    Description copied from class: Certificate
    
    Returns the public key corresponding to this certificate.
    
    Specified by:
    
    getPublicKey in class Certificate
    
    Returns:
    the public key corresponding to this certificate.
  - toString
```
public String toString()
```
    Description copied from class: Certificate
    
    Returns a string containing a concise, human-readable description of the certificate.
    
    Specified by:
    
    toString in class Certificate
    
    Returns:
    a printable representation for the certificate.
  - verify
```
public void verify(PublicKey key)
            throws CertificateException,
                   NoSuchAlgorithmException,
                   InvalidKeyException,
                   NoSuchProviderException,
                   SignatureException
```
    Description copied from class: Certificate
    
    Verifies that this certificate was signed with the given public key.
    
    Specified by:
    
    verify in class Certificate
    
    Parameters:
    key - PublicKey public key for which verification should be performed.
    
    Throws:
    
    CertificateException - if encoding errors are detected.
    
    NoSuchAlgorithmException - if an unsupported algorithm is detected.
    
    InvalidKeyException - if an invalid key is detected.
    
    NoSuchProviderException - if there is no default provider.
    
    SignatureException - if signature errors are detected.
  - verify
```
public void verify(PublicKey key,
          String sigProvider)
            throws CertificateException,
                   NoSuchAlgorithmException,
                   InvalidKeyException,
                   NoSuchProviderException,
                   SignatureException
```
    Description copied from class: Certificate
    
    Verifies that this certificate was signed with the given public key. It Uses the signature algorithm given by the provider.
    
    Specified by:
    
    verify in class Certificate
    
    Parameters:
    key - PublicKey public key for which verification should be performed.
    sigProvider - String the name of the signature provider.
    
    Throws:
    
    CertificateException - if encoding errors are detected.
    
    NoSuchAlgorithmException - if an unsupported algorithm is detected.
    
    InvalidKeyException - if an invalid key is detected.
    
    NoSuchProviderException - if the specified provider does not exists.
    
    SignatureException - if signature errors are detected.
  - getNonCriticalExtensionOIDs
```
public Set<String> getNonCriticalExtensionOIDs()
```
    Description copied from interface: X509Extension
    
    Returns the set of OIDs of the extension(s) marked as NON-CRITICAL, that this implementation manages.
    
    Returns:
    the set of extension OIDs marked as NON-CRITIAL, an empty set if none are marked as NON-.CRITICAL, or null if no extensions are present.
  - getCriticalExtensionOIDs
```
public Set<String> getCriticalExtensionOIDs()
```
    Description copied from interface: X509Extension
    
    Returns the set of OIDs of the extension(s) marked as CRITICAL, that this implementation manages.
    
    Returns:
    the set of extension OIDs marked as CRITIAL, an empty set if none are marked as CRITICAL, or null if no extensions are present.
  - getExtensionValue
```
public byte[] getExtensionValue(String oid)
```
    Description copied from interface: X509Extension
    
    Returns the extension value as DER-encoded OCTET string for the specified OID.
    
    Parameters:
    oid - the object identifier to get the extension value for.
    
    Returns:
    the extension value as DER-encoded OCTET string, or null if no extension for the specified OID can be found.
  - hasUnsupportedCriticalExtension
```
public boolean hasUnsupportedCriticalExtension()
```
    Description copied from interface: X509Extension
    
    Returns whether this instance has an extension marked as CRITICAL that it cannot support.
    
    Returns:
    true if an unsupported CRITICAL extension is present, false otherwise.

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IT. Expert System.

Android Reference

X509CertImpl

Class X509CertImpl

Nested Class Summary

Nested classes/interfaces inherited from class java.security.cert.Certificate

Constructor Summary

Method Summary

Methods inherited from class java.security.cert.Certificate

Methods inherited from class java.lang.Object

Constructor Detail

X509CertImpl

X509CertImpl

X509CertImpl

Method Detail

checkValidity

checkValidity

getVersion

getSerialNumber

getIssuerDN

getIssuerX500Principal

getSubjectDN

getSubjectX500Principal

getNotBefore

getNotAfter

getTBSCertificate

getSignature

getSigAlgName

getSigAlgOID

getSigAlgParams

getIssuerUniqueID

getSubjectUniqueID

getKeyUsage

getExtendedKeyUsage

getBasicConstraints

getSubjectAlternativeNames

getIssuerAlternativeNames

getEncoded

getPublicKey

toString

verify

verify

getNonCriticalExtensionOIDs

getCriticalExtensionOIDs

getExtensionValue

hasUnsupportedCriticalExtension

Android Reference

Java basics

Java Enterprise Edition (EE)

Java Standard Edition (SE)

SQL

HTML

PHP

CSS

Java Script

MYSQL

JQUERY

VBS

REGEX

C

C++

C#

Design patterns

RFC (standard status)

RFC (proposed standard status)

RFC (draft standard status)

RFC (informational status)

RFC (experimental status)

RFC (best current practice status)

RFC (historic status)

RFC (unknown status)

IT dictionary