oracle.security.crypto.cms

Class CMSOutputStream

java.lang.Object

java.io.OutputStream

java.io.FilterOutputStream

oracle.security.crypto.cms.CMSOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable

Direct Known Subclasses:

CMSAuthenticatedDataOutputStream, CMSCompressedDataOutputStream, CMSDigestedDataOutputStream, CMSEncryptedDataOutputStream, CMSEnvelopedDataOutputStream, CMSSignedDataOutputStream

public abstract class CMSOutputStream
extends java.io.FilterOutputStream

This abstract class is the superclass of all classes that implement an output stream filter for creating CMS Objects. A CMSOutputStream writes its output in the form of a CMS ContentInfo structure in one pass, eliminating the necessity to accumulate all of the input data before writing any output.

In the case where a CMSOutputConnector is provided instead of a CMSOutputStream, only the exposed content i.e. the Content field of the ContentInfo structure minus the explicit [0] tag is written to the underlying output stream.

IMPORTANT: This class generates large CMS Objects more efficiently (Java VM memory usage) than the CMSContentInfo class.

See Also:

CMSContentInfo.output(java.io.OutputStream), CMSOutputConnector

Field Summary

Fields inherited from class java.io.FilterOutputStream

out

Constructor Summary

Constructors

Constructor and Description
CMSOutputStream(java.io.OutputStream out) Creates a CMSOutputStream object.

Method Summary

Modifier and Type	Method and Description
abstract ASN1ObjectID	getExposedContentType() Returns the content type of the data that is output to the underlying output stream.
abstract void	terminate() Ensures that the CMS Object has been written completely.

Methods inherited from class java.io.FilterOutputStream

close, flush, write, write, write

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CMSOutputStream

public CMSOutputStream(java.io.OutputStream out)

Creates a CMSOutputStream object.

Parameters:

out - The underlying output stream.

Method Detail

getExposedContentType

public abstract ASN1ObjectID getExposedContentType()

Returns the content type of the data that is output to the underlying output stream.

Returns:

The content type identifier.

terminate

public abstract void terminate()
                        throws java.io.IOException

Ensures that the CMS Object has been written completely.

Must be called after all the content enclosed by the CMS Object has been written.

Throws:

java.io.IOException - An I/O error occurred.