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Oracle Security Developer Tools CMS Java API Reference 11g (11.1.1) E10667-02 |
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java.lang.Object
java.io.OutputStream
java.io.FilterOutputStream
oracle.security.crypto.cms.CMSOutputStream
oracle.security.crypto.cms.CMSCompressedDataOutputStream
public class 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 |
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Fields inherited from class java.io.FilterOutputStream |
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out |
Constructor Summary | |
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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 | |
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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 |
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flush, write |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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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 |
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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
write
in class java.io.FilterOutputStream
java.io.IOException
public void write(byte[] b, int off, int len) throws java.io.IOException
write
in class java.io.FilterOutputStream
java.io.IOException
public void close() throws java.io.IOException
close
in interface java.io.Closeable
close
in class java.io.FilterOutputStream
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 11g (11.1.1) E10667-02 |
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