A representation of the XML
KeyValue element as defined in the
W3C Recommendation for XML-Signature Syntax and Processing. A
KeyValue object contains a single public key that may be useful in validating the signature. The XML schema definition is defined as:
<element name="KeyValue" type="ds:KeyValueType"/>
<complexType name="KeyValueType" mixed="true">
<choice>
<element ref="ds:DSAKeyValue"/>
<element ref="ds:RSAKeyValue"/>
<any namespace="##other" processContents="lax"/>
</choice>
</complexType>
<element name="DSAKeyValue" type="ds:DSAKeyValueType"/>
<complexType name="DSAKeyValueType">
<sequence>
<sequence minOccurs="0">
<element name="P" type="ds:CryptoBinary"/>
<element name="Q" type="ds:CryptoBinary"/>
</sequence>
<element name="G" type="ds:CryptoBinary" minOccurs="0"/>
<element name="Y" type="ds:CryptoBinary"/>
<element name="J" type="ds:CryptoBinary" minOccurs="0"/>
<sequence minOccurs="0">
<element name="Seed" type="ds:CryptoBinary"/>
<element name="PgenCounter" type="ds:CryptoBinary"/>
</sequence>
</sequence>
</complexType>
<element name="RSAKeyValue" type="ds:RSAKeyValueType"/>
<complexType name="RSAKeyValueType">
<sequence>
<element name="Modulus" type="ds:CryptoBinary"/>
<element name="Exponent" type="ds:CryptoBinary"/>
</sequence>
</complexType>
A
KeyValue instance may be created by invoking the
newKeyValue method of the
KeyInfoFactory class, and passing it a
PublicKey representing the value of the public key. Here is an example of creating a
KeyValue from a
DSAPublicKey of a
Certificate stored in a
KeyStore:
KeyStore keyStore = KeyStore.getInstance(KeyStore.getDefaultType());
PublicKey dsaPublicKey = keyStore.getCertificate("myDSASigningCert").getPublicKey();
KeyInfoFactory factory = KeyInfoFactory.getInstance("DOM");
KeyValue keyValue = factory.newKeyValue(dsaPublicKey);
This class returns the
DSAKeyValue and
RSAKeyValue elements as objects of type
DSAPublicKey and
RSAPublicKey, respectively. Note that not all of the fields in the schema are accessible as parameters of these types.
