Attribute (Bouncy Castle Library 1.68 API Specification)

java.lang.Object
- org.bouncycastle.asn1.ASN1Object
- - org.bouncycastle.asn1.cms.Attribute

All Implemented Interfaces:

ASN1Encodable, Encodable

Direct Known Subclasses:

SMIMECapabilitiesAttribute, SMIMEEncryptionKeyPreferenceAttribute
```
public class Attribute
extends ASN1Object
```
RFC 5652: Attribute is a pair of OID (as type identifier) + set of values.
```
 Attribute ::= SEQUENCE {
     attrType OBJECT IDENTIFIER,
     attrValues SET OF AttributeValue
 }
 
 AttributeValue ::= ANY
 
```
General rule on values is that same AttributeValue must not be included multiple times into the set. That is, if the value is a SET OF INTEGERs, then having same value repeated is wrong: (1, 1), but different values is OK: (1, 2). Normally the AttributeValue syntaxes are more complicated than that.
General rule of Attribute usage is that the Attributes containers must not have multiple Attribute:s with same attrType (OID) there.

Constructor Summary

Constructors
Constructor Description

Attribute(ASN1ObjectIdentifier attrType, ASN1Set attrValues)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`ASN1Encodable[]`	`getAttributeValues()`
`ASN1ObjectIdentifier`	`getAttrType()`
`ASN1Set`	`getAttrValues()`
`static Attribute`	`getInstance(java.lang.Object o)`	Return an Attribute object from the given object.
`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
  - Attribute
```
public Attribute(ASN1ObjectIdentifier attrType,
                 ASN1Set attrValues)
```
- Method Detail
  - getInstance
```
public static Attribute getInstance(java.lang.Object o)
```
    Return an Attribute object from the given object.
    Accepted inputs:
    
    null → null
    Attribute object
    ASN1Sequence input formats with Attribute structure inside
    Parameters:
    
    o - the object we want converted.
    
    Throws:
    
    java.lang.IllegalArgumentException - if the object cannot be converted.
  - getAttrType
```
public ASN1ObjectIdentifier getAttrType()
```
  - getAttrValues
```
public ASN1Set getAttrValues()
```
  - getAttributeValues
```
public ASN1Encodable[] getAttributeValues()
```
  - toASN1Primitive
```
public ASN1Primitive toASN1Primitive()
```
    Produce an object suitable for an ASN1OutputStream.
    
    Specified by:
    
    toASN1Primitive in interface ASN1Encodable
    
    Specified by:
    
    toASN1Primitive in class ASN1Object
    
    Returns:
    
    a primitive representation of this object.