keyinfofactory.java

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    }

    /**
     * Returns the type of the XML processing mechanism and representation
     * supported by this <code>KeyInfoFactory</code> (ex: "DOM")
     *
     * @return the XML processing mechanism type supported by this
     *    <code>KeyInfoFactory</code>
     */
    public final String getMechanismType() {
        return mechanismType;
    }

    /**
     * Returns the provider of this <code>KeyInfoFactory</code>.
     *
     * @return the provider of this <code>KeyInfoFactory</code>
     */
    public final Provider getProvider() {
	return provider;
    }

    /**
     * Creates a <code>KeyInfo</code> containing the specified list of
     * key information types.
     *
     * @param content a list of one or more {@link XMLStructure}s representing 
     *    key information types. The list is defensively copied to protect
     *    against subsequent modification.
     * @return a <code>KeyInfo</code>
     * @throws NullPointerException if <code>content</code> is <code>null</code>
     * @throws IllegalArgumentException if <code>content</code> is empty
     * @throws ClassCastException if <code>content</code> contains any entries
     *    that are not of type {@link XMLStructure}
     */
    public abstract KeyInfo newKeyInfo(List content);

    /**
     * Creates a <code>KeyInfo</code> containing the specified list of key
     * information types and optional id. The
     * <code>id</code> parameter represents the value of an XML
     * <code>ID</code> attribute and is useful for referencing
     * the <code>KeyInfo</code> from other XML structures. 
     *
     * @param content a list of one or more {@link XMLStructure}s representing 
     *    key information types. The list is defensively copied to protect
     *    against subsequent modification.
     * @param id the value of an XML <code>ID</code> (may be <code>null</code>)
     * @return a <code>KeyInfo</code>
     * @throws NullPointerException if <code>content</code> is <code>null</code>
     * @throws IllegalArgumentException if <code>content</code> is empty
     * @throws ClassCastException if <code>content</code> contains any entries
     *    that are not of type {@link XMLStructure}
     */
    public abstract KeyInfo newKeyInfo(List content, String id);

    /**
     * Creates a <code>KeyName</code> from the specified name.
     *
     * @param name the name that identifies the key
     * @return a <code>KeyName</code>
     * @throws NullPointerException if <code>name</code> is <code>null</code>
     */
    public abstract KeyName newKeyName(String name);

    /**
     * Creates a <code>KeyValue</code> from the specified public key.
     *
     * @param key the public key
     * @return a <code>KeyValue</code>
     * @throws KeyException if the <code>key</code>'s algorithm is not 
     *    recognized or supported by this <code>KeyInfoFactory</code>
     * @throws NullPointerException if <code>key</code> is <code>null</code>
     */
    public abstract KeyValue newKeyValue(PublicKey key) throws KeyException;

    /**
     * Creates a <code>PGPData</code> from the specified PGP public key
     * identifier.
     *
     * @param keyId a PGP public key identifier as defined in <a href=
     *    "http://www.ietf.org/rfc/rfc2440.txt">RFC 2440</a>, section 11.2.
     *    The array is cloned to protect against subsequent modification.
     * @return a <code>PGPData</code>
     * @throws NullPointerException if <code>keyId</code> is <code>null</code>
     * @throws IllegalArgumentException if the key id is not in the correct
     *    format
     */
    public abstract PGPData newPGPData(byte[] keyId);

    /**
     * Creates a <code>PGPData</code> from the specified PGP public key
     * identifier, and optional key material packet and list of external 
     * elements.
     *
     * @param keyId a PGP public key identifier as defined in <a href=
     *    "http://www.ietf.org/rfc/rfc2440.txt">RFC 2440</a>, section 11.2.
     *    The array is cloned to protect against subsequent modification.
     * @param keyPacket a PGP key material packet as defined in <a href=
     *    "http://www.ietf.org/rfc/rfc2440.txt">RFC 2440</a>, section 5.5.
     *    The array is cloned to protect against subsequent modification. May 
     *    be <code>null</code>.
     * @param other a list of {@link XMLStructure}s representing elements from
     *    an external namespace. The list is defensively copied to protect
     *    against subsequent modification. May be <code>null</code> or empty.
     * @return a <code>PGPData</code>
     * @throws NullPointerException if <code>keyId</code> is <code>null</code>
     * @throws IllegalArgumentException if the <code>keyId</code> or 
     *    <code>keyPacket</code> is not in the correct format. For 
     *    <code>keyPacket</code>, the format of the packet header is 
     *    checked and the tag is verified that it is of type key material. The
     *    contents and format of the packet body are not checked.
     * @throws ClassCastException if <code>other</code> contains any
     *    entries that are not of type {@link XMLStructure}
     */
    public abstract PGPData newPGPData(byte[] keyId, byte[] keyPacket,
	List other);

    /**
     * Creates a <code>PGPData</code> from the specified PGP key material
     * packet and optional list of external elements.
     *
     * @param keyPacket a PGP key material packet as defined in <a href=
     *    "http://www.ietf.org/rfc/rfc2440.txt">RFC 2440</a>, section 5.5.
     *    The array is cloned to protect against subsequent modification.
     * @param other a list of {@link XMLStructure}s representing elements from
     *    an external namespace. The list is defensively copied to protect 
     *    against subsequent modification. May be <code>null</code> or empty.
     * @return a <code>PGPData</code>
     * @throws NullPointerException if <code>keyPacket</code> is 
     *    <code>null</code>
     * @throws IllegalArgumentException if <code>keyPacket</code> is not in the 
     *    correct format. For <code>keyPacket</code>, the format of the packet 
     *    header is checked and the tag is verified that it is of type key 
     *    material. The contents and format of the packet body are not checked.
     * @throws ClassCastException if <code>other</code> contains any
     *    entries that are not of type {@link XMLStructure}
     */
    public abstract PGPData newPGPData(byte[] keyPacket, List other);

    /**
     * Creates a <code>RetrievalMethod</code> from the specified URI.
     *
     * @param uri the URI that identifies the <code>KeyInfo</code> information 
     *    to be retrieved
     * @return a <code>RetrievalMethod</code>
     * @throws NullPointerException if <code>uri</code> is <code>null</code>
     * @throws IllegalArgumentException if <code>uri</code> is not RFC 2396
     *    compliant
     */
    public abstract RetrievalMethod newRetrievalMethod(String uri);

    /**
     * Creates a <code>RetrievalMethod</code> from the specified parameters.
     *
     * @param uri the URI that identifies the <code>KeyInfo</code> information 
     *    to be retrieved
     * @param type a URI that identifies the type of <code>KeyInfo</code> 
     *    information to be retrieved (may be <code>null</code>)
     * @param transforms a list of {@link Transform}s. The list is defensively
     *    copied to protect against subsequent modification. May be 
     *    <code>null</code> or empty.
     * @return a <code>RetrievalMethod</code>
     * @throws NullPointerException if <code>uri</code> is <code>null</code>
     * @throws IllegalArgumentException if <code>uri</code> is not RFC 2396
     *    compliant
     * @throws ClassCastException if <code>transforms</code> contains any
     *    entries that are not of type {@link Transform}
     */
    public abstract RetrievalMethod newRetrievalMethod(String uri, String type,
	List transforms);

    /**
     * Creates a <code>X509Data</code> containing the specified list of
     * X.509 content.
     *
     * @param content a list of one or more X.509 content types. Valid types are
     *    {@link String} (subject names), <code>byte[]</code> (subject key ids),
     *    {@link java.security.cert.X509Certificate}, {@link X509CRL},
     *    or {@link XMLStructure} ({@link X509IssuerSerial}
     *    objects or elements from an external namespace). Subject names are 
     *    distinguished names in RFC 2253 String format. Implementations MUST 
     *    support the attribute type keywords defined in RFC 2253 (CN, L, ST, 
     *    O, OU, C, STREET, DC and UID). Implementations MAY support additional 
     *    keywords. The list is defensively copied to protect against 
     *    subsequent modification.
     * @return a <code>X509Data</code>
     * @throws NullPointerException if <code>content</code> is <code>null</code>
     * @throws IllegalArgumentException if <code>content</code> is empty, or
     *    if a subject name is not RFC 2253 compliant or one of the attribute 
     *    type keywords is not recognized.
     * @throws ClassCastException if <code>content</code> contains any entries
     *    that are not of one of the valid types mentioned above
     */
    public abstract X509Data newX509Data(List content);

    /**
     * Creates an <code>X509IssuerSerial</code> from the specified X.500 issuer
     * distinguished name and serial number.
     *
     * @param issuerName the issuer's distinguished name in RFC 2253 String
     *    format. Implementations MUST support the attribute type keywords 
     *    defined in RFC 2253 (CN, L, ST, O, OU, C, STREET, DC and UID). 
     *    Implementations MAY support additional keywords.
     * @param serialNumber the serial number
     * @return an <code>X509IssuerSerial</code>
     * @throws NullPointerException if <code>issuerName</code> or 
     *    <code>serialNumber</code> are <code>null</code>
     * @throws IllegalArgumentException if the issuer name is not RFC 2253
     *    compliant or one of the attribute type keywords is not recognized.
     */
    public abstract X509IssuerSerial newX509IssuerSerial
        (String issuerName, BigInteger serialNumber);

    /**
     * Indicates whether a specified feature is supported.
     *
     * @param feature the feature name (as an absolute URI)
     * @return <code>true</code> if the specified feature is supported,
     *    <code>false</code> otherwise
     * @throws NullPointerException if <code>feature</code> is <code>null</code>
     */
    public abstract boolean isFeatureSupported(String feature);

    /**
     * Returns a reference to the <code>URIDereferencer</code> that is used by 
     * default to dereference URIs in {@link RetrievalMethod} objects.
     *
     * @return a reference to the default <code>URIDereferencer</code>
     */
    public abstract URIDereferencer getURIDereferencer();

    /**
     * Unmarshals a new <code>KeyInfo</code> instance from a 
     * mechanism-specific <code>XMLStructure</code> (ex: {@link DOMStructure}) 
     * instance.
     *
     * @param xmlStructure a mechanism-specific XML structure from which to 
     *   unmarshal the keyinfo from
     * @return the <code>KeyInfo</code>
     * @throws NullPointerException if <code>xmlStructure</code> is 
     *   <code>null</code>
     * @throws ClassCastException if the type of <code>xmlStructure</code> is
     *   inappropriate for this factory
     * @throws MarshalException if an unrecoverable exception occurs during 
     *   unmarshalling
     */
    public abstract KeyInfo unmarshalKeyInfo(XMLStructure xmlStructure)
	throws MarshalException;
}