SimpleKeyInfoReferenceEncryptedKeyResolver (OpenSAML :: XML Security API 4.0.1 API)

java.lang.Object
- org.opensaml.xmlsec.encryption.support.AbstractEncryptedKeyResolver
- - org.opensaml.xmlsec.encryption.support.SimpleKeyInfoReferenceEncryptedKeyResolver

All Implemented Interfaces:

EncryptedKeyResolver
```
public class SimpleKeyInfoReferenceEncryptedKeyResolver
extends AbstractEncryptedKeyResolver
```
Implementation of EncryptedKeyResolver which finds EncryptedKey elements by dereferencing KeyInfoReference children of the KeyInfo of the EncryptedData context. The URI attribute value must be a same-document fragment identifier (via ID attribute). Processing of external resources is not supported. Furthermore, the target of the reference must itself contain either an EncryptedKey or a subsequent KeyInfoReference, up to a depth limit. Other forms of resolution cannot be mixed together with this one.

Field Summary

Fields
Modifier and Type Field Description

private int depthLimit
Number of times to follow a reference before failing.

private org.slf4j.Logger log
Class logger.

Constructor Summary

Constructors
Constructor	Description
`SimpleKeyInfoReferenceEncryptedKeyResolver()`	Constructor.
`SimpleKeyInfoReferenceEncryptedKeyResolver(String recipient)`	Constructor.
`SimpleKeyInfoReferenceEncryptedKeyResolver(Set<String> recipients)`	Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected KeyInfo`	`dereferenceURI(KeyInfoReference ref)`	Dereference the URI attribute of the specified retrieval method into a KeyInfo.
`int`	`getDepthLimit()`	Gets the reference depth limit.
`Iterable<EncryptedKey>`	`resolve(EncryptedData encryptedData)`	Resolve the EncryptedKey elements containing the data encryption key used to encrypt the specified EncryptedData element.
`protected Iterable<EncryptedKey>`	`resolveKeyInfo(KeyInfo keyInfo, int limit)`	Turn a KeyInfo into an EncryptedKey collection.
`void`	`setDepthLimit(int limit)`	Sets the reference depth limit, to a minimum of 1.

Methods inherited from class org.opensaml.xmlsec.encryption.support.AbstractEncryptedKeyResolver
getRecipients, matchCarriedKeyName, matchDataReference, matchRecipient

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

Field Detail
- log
```
@Nonnull
private final org.slf4j.Logger log
```
  Class logger.
- depthLimit
```
private int depthLimit
```
  Number of times to follow a reference before failing.

Constructor Detail

SimpleKeyInfoReferenceEncryptedKeyResolver
```
public SimpleKeyInfoReferenceEncryptedKeyResolver()
```
Constructor.

SimpleKeyInfoReferenceEncryptedKeyResolver

public SimpleKeyInfoReferenceEncryptedKeyResolver(@Nullable
                                                  Set<String> recipients)

Constructor.

Parameters:: recipients - the set of recipients

SimpleKeyInfoReferenceEncryptedKeyResolver

public SimpleKeyInfoReferenceEncryptedKeyResolver(@Nullable
                                                  String recipient)

Constructor.

Parameters:: recipient - the recipient

Method Detail
- getDepthLimit
```
public int getDepthLimit()
```
  Gets the reference depth limit.
  
  Returns:
  
  the depth limit
- setDepthLimit
```
public void setDepthLimit(int limit)
```
  Sets the reference depth limit, to a minimum of 1.
  
  Parameters:
  
  limit - limit to set
- resolve
```
@Nonnull
public Iterable<EncryptedKey> resolve(@Nonnull
                                      EncryptedData encryptedData)
```
  Resolve the EncryptedKey elements containing the data encryption key used to encrypt the specified EncryptedData element.
  
  Parameters:
  
  encryptedData - the EncryptedData element context in which to resolve
  
  Returns:
  
  an iterable of EncryptedKey elements
- resolveKeyInfo
```
@Nonnull
protected Iterable<EncryptedKey> resolveKeyInfo(@Nullable
                                                KeyInfo keyInfo,
                                                int limit)
```
  Turn a KeyInfo into an EncryptedKey collection.
  
  Parameters:
  
  keyInfo - KeyInfo to process
  
  limit - depth of references to follow
  
  Returns:
  
  encrypted keys
- dereferenceURI
```
@Nullable
protected KeyInfo dereferenceURI(@Nonnull
                                 KeyInfoReference ref)
```
  Dereference the URI attribute of the specified retrieval method into a KeyInfo.
  
  Parameters:
  
  ref - the KeyInfoReference to process
  
  Returns:
  
  the dereferenced KeyInfo