CertHash (Bouncy Castle Library 1.68 API Specification)

java.lang.Object
- org.bouncycastle.asn1.ASN1Object
- - org.bouncycastle.asn1.isismtt.ocsp.CertHash

All Implemented Interfaces:

ASN1Encodable, Encodable
```
public class CertHash
extends ASN1Object
```
ISIS-MTT PROFILE: The responder may include this extension in a response to send the hash of the requested certificate to the responder. This hash is cryptographically bound to the certificate and serves as evidence that the certificate is known to the responder (i.e. it has been issued and is present in the directory). Hence, this extension is a means to provide a positive statement of availability as described in T8.[8]. As explained in T13.[1], clients may rely on this information to be able to validate signatures after the expiry of the corresponding certificate. Hence, clients MUST support this extension. If a positive statement of availability is to be delivered, this extension syntax and OID MUST be used.
```
     CertHash ::= SEQUENCE {
       hashAlgorithm AlgorithmIdentifier,
       certificateHash OCTET STRING
     }
 
```

Constructor Summary

Constructors
Constructor Description

CertHash(AlgorithmIdentifier hashAlgorithm, byte[] certificateHash)
Constructor from a given details.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`byte[]`	`getCertificateHash()`
`AlgorithmIdentifier`	`getHashAlgorithm()`
`static CertHash`	`getInstance(java.lang.Object obj)`
`ASN1Primitive`	`toASN1Primitive()`	Produce an object suitable for an ASN1OutputStream.

Methods inherited from class org.bouncycastle.asn1.ASN1Object
encodeTo, encodeTo, equals, getEncoded, getEncoded, hasEncodedTagValue, hashCode

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

- Constructor Detail
  - CertHash
```
public CertHash(AlgorithmIdentifier hashAlgorithm,
                byte[] certificateHash)
```
    Constructor from a given details.
    
    Parameters:
    
    hashAlgorithm - The hash algorithm identifier.
    
    certificateHash - The hash of the whole DER encoding of the certificate.
- Method Detail
  - getInstance
```
public static CertHash getInstance(java.lang.Object obj)
```
  - getHashAlgorithm
```
public AlgorithmIdentifier getHashAlgorithm()
```
  - getCertificateHash
```
public byte[] getCertificateHash()
```
  - toASN1Primitive
```
public ASN1Primitive toASN1Primitive()
```
    Produce an object suitable for an ASN1OutputStream.
    Returns:
    CertHash ::= SEQUENCE { hashAlgorithm AlgorithmIdentifier, certificateHash OCTET STRING }
    Specified by:
    
    toASN1Primitive in interface ASN1Encodable
    
    Specified by:
    
    toASN1Primitive in class ASN1Object
    
    Returns:
    
    a DERObject