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## org.bouncycastle.x509
Class AttributeCertificateHolder

    java.lang.Object
      org.bouncycastle.x509.AttributeCertificateHolder

All Implemented Interfaces:
  java.lang.Cloneable, java.security.cert.CertSelector, Selector

    public class AttributeCertificateHolder

extends java.lang.Object
implements java.security.cert.CertSelector, Selector

The Holder object.

              Holder ::= SEQUENCE {
                    baseCertificateID   [0] IssuerSerial OPTIONAL,
                             -- the issuer and serial number of
                             -- the holder's Public Key Certificate
                    entityName          [1] GeneralNames OPTIONAL,
                             -- the name of the claimant or role
                    objectDigestInfo    [2] ObjectDigestInfo OPTIONAL
                             -- used to directly authenticate the holder,
                             -- for example, an executable
              }

Constructor Summary
`AttributeCertificateHolder(int digestedObjectType, java.lang.String digestAlgorithm, java.lang.String otherObjectTypeID, byte[] objectDigest)` Constructs a holder for v2 attribute certificates with a hash value for some type of object.
`AttributeCertificateHolder(javax.security.auth.x500.X500Principal principal)`
`AttributeCertificateHolder(javax.security.auth.x500.X500Principal issuerName, java.math.BigInteger serialNumber)`
`AttributeCertificateHolder(java.security.cert.X509Certificate cert)`
`AttributeCertificateHolder(X509Principal principal)`
`AttributeCertificateHolder(X509Principal issuerName, java.math.BigInteger serialNumber)`

Method Summary
`java.lang.Object` | `clone()`
`boolean` | `equals(java.lang.Object obj)`
`java.lang.String` | `getDigestAlgorithm()` Returns the other object type ID if an object digest info is used.
`int` | `getDigestedObjectType()` Returns the digest object type if an object digest info is used.
`java.security.Principal[]` | `getEntityNames()` Return any principal objects inside the attribute certificate holder entity names field.
`java.security.Principal[]` | `getIssuer()` Return the principals associated with the issuer attached to this holder
`byte[]` | `getObjectDigest()` Returns the hash if an object digest info is used.
`java.lang.String` | `getOtherObjectTypeID()` Returns the digest algorithm ID if an object digest info is used.
`java.math.BigInteger` | `getSerialNumber()` Return the serial number associated with the issuer attached to this holder.
`int` | `hashCode()`
`boolean` | `match(java.security.cert.Certificate cert)`
`boolean` | `match(java.lang.Object obj)`

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

Constructor Detail

### AttributeCertificateHolder

    public AttributeCertificateHolder(X509Principal issuerName,
                                      java.math.BigInteger serialNumber)

### AttributeCertificateHolder

    public AttributeCertificateHolder(javax.security.auth.x500.X500Principal issuerName,
                                      java.math.BigInteger serialNumber)

### AttributeCertificateHolder

    public AttributeCertificateHolder(java.security.cert.X509Certificate cert)
                               throws java.security.cert.CertificateParsingException

Throws:
  `java.security.cert.CertificateParsingException`

### AttributeCertificateHolder

    public AttributeCertificateHolder(X509Principal principal)

### AttributeCertificateHolder

    public AttributeCertificateHolder(javax.security.auth.x500.X500Principal principal)

### AttributeCertificateHolder

    public AttributeCertificateHolder(int digestedObjectType,
                                      java.lang.String digestAlgorithm,
                                      java.lang.String otherObjectTypeID,
                                      byte[] objectDigest)

  Constructs a holder for v2 attribute certificates with a hash value for some type of object.

  `digestedObjectType` can be one of the following:

  - 0 - publicKey - A hash of the public key of the holder must be passed.
  - 1 - publicKeyCert - A hash of the public key certificate of the holder must be passed.
  - 2 - otherObjectDigest - A hash of some other object type must be passed. `otherObjectTypeID` must not be empty.

  This cannot be used if a v1 attribute certificate is used.

  Parameters:
    `digestedObjectType` - The digest object type.
    `digestAlgorithm` - The algorithm identifier for the hash.
    `otherObjectTypeID` - The object type ID if `digestedObjectType` is `otherObjectDigest`.
    `objectDigest` - The hash value.

Method Detail

### getDigestedObjectType

    public int getDigestedObjectType()

  Returns the digest object type if an object digest info is used.

  - 0 - publicKey - A hash of the public key of the holder must be passed.
  - 1 - publicKeyCert - A hash of the public key certificate of the holder must be passed.
  - 2 - otherObjectDigest - A hash of some other object type must be passed. `otherObjectTypeID` must not be empty.

  Returns:
    The digest object type or -1 if no object digest info is set.

### getDigestAlgorithm

    public java.lang.String getDigestAlgorithm()

  Returns the other object type ID if an object digest info is used.

  Returns:
    The other object type ID or `null` if no object digest info is set.

### getObjectDigest

    public byte[] getObjectDigest()

  Returns the hash if an object digest info is used.

  Returns:
    The hash or `null` if no object digest info is set.

### getOtherObjectTypeID

    public java.lang.String getOtherObjectTypeID()

  Returns the digest algorithm ID if an object digest info is used.

  Returns:
    The digest algorithm ID or `null` if no object digest info is set.

### getEntityNames

    public java.security.Principal[] getEntityNames()

  Return any principal objects inside the attribute certificate holder entity names field.

  Returns:
    an array of Principal objects (usually X500Principal), null if no entity names field is set.

### getIssuer

    public java.security.Principal[] getIssuer()

  Return the principals associated with the issuer attached to this holder

  Returns:
    an array of principals, null if no BaseCertificateID is set.

### getSerialNumber

    public java.math.BigInteger getSerialNumber()

  Return the serial number associated with the issuer attached to this holder.

  Returns:
    the certificate serial number, null if no BaseCertificateID is set.

### clone

    public java.lang.Object clone()

  Specified by:
    `clone` in interface `java.security.cert.CertSelector`
  Specified by:
    `clone` in interface `Selector`
  Overrides:
    `clone` in class `java.lang.Object`

### match

    public boolean match(java.security.cert.Certificate cert)

  Specified by:
    `match` in interface `java.security.cert.CertSelector`

### equals

    public boolean equals(java.lang.Object obj)

  Overrides:
    `equals` in class `java.lang.Object`

### hashCode

    public int hashCode()

  Overrides:
    `hashCode` in class `java.lang.Object`

### match

    public boolean match(java.lang.Object obj)

  Specified by:
    `match` in interface `Selector`

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