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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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*
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/*
* $Id: KeyInfo.java,v 1.7 2005/05/10 16:35:34 mullan Exp $
*/
package javax.xml.crypto.dsig.keyinfo;
import java.util.List;
import javax.xml.crypto.MarshalException;
import javax.xml.crypto.XMLCryptoContext;
import javax.xml.crypto.XMLStructure;
A representation of the XML KeyInfo element as defined in
the
W3C Recommendation for XML-Signature Syntax and Processing.
A KeyInfo contains a list of XMLStructures, each of which contain information that enables the recipient(s) to obtain the key needed to validate an XML signature. The XML Schema Definition is defined as: <element name="KeyInfo" type="ds:KeyInfoType"/>
<complexType name="KeyInfoType" mixed="true">
<choice maxOccurs="unbounded">
<element ref="ds:KeyName"/>
<element ref="ds:KeyValue"/>
<element ref="ds:RetrievalMethod"/>
<element ref="ds:X509Data"/>
<element ref="ds:PGPData"/>
<element ref="ds:SPKIData"/>
<element ref="ds:MgmtData"/>
<any processContents="lax" namespace="##other"/>
<!-- (1,1) elements from (0,unbounded) namespaces -->
</choice>
<attribute name="Id" type="ID" use="optional"/>
</complexType>
A KeyInfo instance may be created by invoking one of the newKeyInfo methods of the KeyInfoFactory class, and passing it a list of one or more XMLStructures and an optional id parameter;
for example:
KeyInfoFactory factory = KeyInfoFactory.getInstance("DOM");
KeyInfo keyInfo = factory.newKeyInfo
(Collections.singletonList(factory.newKeyName("Alice"), "keyinfo-1"));
KeyInfo objects can also be marshalled to XML by invoking the marshal method.
Author: Sean Mullan, JSR 105 Expert Group See Also: Since: 1.6
/**
* A representation of the XML <code>KeyInfo</code> element as defined in
* the <a href="http://www.w3.org/TR/xmldsig-core/">
* W3C Recommendation for XML-Signature Syntax and Processing</a>.
* A <code>KeyInfo</code> contains a list of {@link XMLStructure}s, each of
* which contain information that enables the recipient(s) to obtain the key
* needed to validate an XML signature. The XML Schema Definition is defined as:
*
* <pre>
* <element name="KeyInfo" type="ds:KeyInfoType"/>
* <complexType name="KeyInfoType" mixed="true">
* <choice maxOccurs="unbounded">
* <element ref="ds:KeyName"/>
* <element ref="ds:KeyValue"/>
* <element ref="ds:RetrievalMethod"/>
* <element ref="ds:X509Data"/>
* <element ref="ds:PGPData"/>
* <element ref="ds:SPKIData"/>
* <element ref="ds:MgmtData"/>
* <any processContents="lax" namespace="##other"/>
* <!-- (1,1) elements from (0,unbounded) namespaces -->
* </choice>
* <attribute name="Id" type="ID" use="optional"/>
* </complexType>
* </pre>
*
* A <code>KeyInfo</code> instance may be created by invoking one of the
* {@link KeyInfoFactory#newKeyInfo newKeyInfo} methods of the
* {@link KeyInfoFactory} class, and passing it a list of one or more
* <code>XMLStructure</code>s and an optional id parameter;
* for example:
* <pre>
* KeyInfoFactory factory = KeyInfoFactory.getInstance("DOM");
* KeyInfo keyInfo = factory.newKeyInfo
* (Collections.singletonList(factory.newKeyName("Alice"), "keyinfo-1"));
* </pre>
*
* <p><code>KeyInfo</code> objects can also be marshalled to XML by invoking
* the {@link #marshal marshal} method.
*
* @author Sean Mullan
* @author JSR 105 Expert Group
* @since 1.6
* @see KeyInfoFactory#newKeyInfo(List)
* @see KeyInfoFactory#newKeyInfo(List, String)
*/
public interface KeyInfo extends XMLStructure {
Returns an unmodifiable
list containing the key information. Each entry of the list is an XMLStructure. If there is a public subclass representing the type of
XMLStructure, it is returned as an instance of that
class (ex: an X509Data element would be returned as an instance of X509Data).
Returns: an unmodifiable list of one or more XMLStructures
in this KeyInfo. Never returns null or an
empty list.
/**
* Returns an {@link java.util.Collections#unmodifiableList unmodifiable
* list} containing the key information. Each entry of the list is
* an {@link XMLStructure}.
*
* <p>If there is a public subclass representing the type of
* <code>XMLStructure</code>, it is returned as an instance of that
* class (ex: an <code>X509Data</code> element would be returned as an
* instance of {@link javax.xml.crypto.dsig.keyinfo.X509Data}).
*
* @return an unmodifiable list of one or more <code>XMLStructure</code>s
* in this <code>KeyInfo</code>. Never returns <code>null</code> or an
* empty list.
*/
List<XMLStructure> getContent();
Return the optional Id attribute of this KeyInfo, which
may be useful for referencing this KeyInfo from other
XML structures.
Returns: the Id attribute of this KeyInfo (may be
null if not specified)
/**
* Return the optional Id attribute of this <code>KeyInfo</code>, which
* may be useful for referencing this <code>KeyInfo</code> from other
* XML structures.
*
* @return the Id attribute of this <code>KeyInfo</code> (may be
* <code>null</code> if not specified)
*/
String getId();
Marshals the key info to XML.
Params: - parent – a mechanism-specific structure containing the parent node
that the marshalled key info will be appended to
- context – the
XMLCryptoContext containing additional
context (may be null if not applicable)
Throws: - ClassCastException – if the type of
parent or
context is not compatible with this key info - MarshalException – if the key info cannot be marshalled
- NullPointerException – if
parent is null
/**
* Marshals the key info to XML.
*
* @param parent a mechanism-specific structure containing the parent node
* that the marshalled key info will be appended to
* @param context the <code>XMLCryptoContext</code> containing additional
* context (may be null if not applicable)
* @throws ClassCastException if the type of <code>parent</code> or
* <code>context</code> is not compatible with this key info
* @throws MarshalException if the key info cannot be marshalled
* @throws NullPointerException if <code>parent</code> is <code>null</code>
*/
void marshal(XMLStructure parent, XMLCryptoContext context)
throws MarshalException;
}