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Oracle Security Developer Tools CMS Java API Reference 10g (10.1.4.0.1) B28170-01 |
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java.lang.Object
java.io.OutputStream
java.io.FilterOutputStream
oracle.security.crypto.cms.CMSOutputStream
oracle.security.crypto.cms.CMSCompressedDataOutputStream
A CMSCompressedDataOutputStream
writes its output in the form of a CMS digested-data
structure, generating the message digest in the process.
Specifically, the effect of using this class is as if the following process took place:
digested-data
.except that the actual process is done in one pass, eliminating the necessity to accumulate all of the input data before writing any output.
In the case where a <ocde>CMSConnector 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 digested-data Objects more efficiently (Java VM memory usage) than the CMSCompressedDataContentInfo
class.
CMSOutputStream
, CMSCompressedDataContentInfo
, CMSCompressedDataOutputConnector
Field Summary |
Fields inherited from class java.io.FilterOutputStream |
out |
Constructor Summary | |
CMSCompressedDataOutputStream(CMSOutputConnector conn, oracle.security.crypto.core.AlgorithmIdentifier digestAlgID, oracle.security.crypto.asn1.ASN1ObjectID contentType) Creates a CMSCompressedDataOutputStream . |
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CMSCompressedDataOutputStream(java.io.OutputStream out, oracle.security.crypto.core.AlgorithmIdentifier compressionAlgID, oracle.security.crypto.asn1.ASN1ObjectID contentType) Creates a CMSCompressedDataOutputStream . |
Method Summary | |
void |
close() |
oracle.security.crypto.asn1.ASN1ObjectID |
getExposedContentType() Returns the content type of the data that is output to the underlying output stream. |
void |
terminate() Finish writing the CMS compressed-data structure. |
void |
write(byte[] b, int off, int len) |
void |
write(int ch) |
Methods inherited from class java.io.FilterOutputStream |
flush, write |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public CMSCompressedDataOutputStream(java.io.OutputStream out, oracle.security.crypto.core.AlgorithmIdentifier compressionAlgID, oracle.security.crypto.asn1.ASN1ObjectID contentType) throws oracle.security.crypto.core.AlgorithmIdentifierException
CMSCompressedDataOutputStream
.out
- The underlying output stream.compressionAlgID
- The compression algorithm.contentType
- The encapsulated content type.oracle.security.crypto.core.AlgorithmIdentifierException
- Digest algorithm is not supported.public CMSCompressedDataOutputStream(CMSOutputConnector conn, oracle.security.crypto.core.AlgorithmIdentifier digestAlgID, oracle.security.crypto.asn1.ASN1ObjectID contentType) throws oracle.security.crypto.core.AlgorithmIdentifierException
CMSCompressedDataOutputStream
.conn
- The underlying output connector.digestAlgID
- The message digest algorithm.contentType
- The encapsulated content type.oracle.security.crypto.core.AlgorithmIdentifierException
- Digest algorithm is not supported.Method Detail |
public void terminate() throws java.io.IOException
compressed-data
structure.
This method must be called after the content has been completely written.
terminate
in class CMSOutputStream
java.io.IOException
- An I/O error occurred.public void write(int ch) throws java.io.IOException
java.io.IOException
public void write(byte[] b, int off, int len) throws java.io.IOException
java.io.IOException
public void close() throws java.io.IOException
java.io.IOException
public oracle.security.crypto.asn1.ASN1ObjectID getExposedContentType()
getExposedContentType
in class CMSOutputStream
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Oracle Security Developer Tools CMS Java API Reference 10g (10.1.4.0.1) B28170-01 |
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