oracle.security.crypto.cms
Class CMSEnvelopedDataInputStream

java.lang.Object
java.io.InputStream
java.io.FilterInputStream
oracle.security.crypto.cms.CMSInputStream
oracle.security.crypto.cms.CMSEnvelopedDataInputStream

public class CMSEnvelopedDataInputStream

extends CMSInputStream

A CMSEnvelopedDataInputStream is used to read enveloped-data CMS objects.

A CMSEnvelopedDataInputStream is essentially a input stream filter that unwraps the CMS enveloped-data structure from the data read in.

IMPORTANT: This class processes large CMS enveloped-data Objects more efficiently (Java VM memory usage) than the CMSEnvelopedDataContentInfo class.

See Also:

CMSInputConnector, CMSEnvelopedDataInputConnector, CMSEnvelopedDataContentInfo

Field Summary

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

CMSEnvelopedDataInputStream(CMSInputConnector conn, PrivateKey recipientPrivateKey, oracle.security.crypto.cert.X509 recipientCert)
Creates a CMSEnvelopedDataInputStream.

CMSEnvelopedDataInputStream(CMSInputConnector conn, SymmetricKey keyEncryptionKey)
Creates a CMSEnvelopedDataInputStream.

CMSEnvelopedDataInputStream(java.io.InputStream in, PrivateKey recipientPrivateKey, oracle.security.crypto.cert.X509 recipientCert)
Creates a CMSEnvelopedDataInputStream.

CMSEnvelopedDataInputStream(java.io.InputStream in, SymmetricKey keyEncryptionKey)
Creates a CMSEnvelopedDataInputStream.

Method Summary

int	available()
AlgorithmIdentifier	getContentEncryptionAlgID() Returns the content encryption algorithm.
ASN1ObjectID	getEnclosedContentType() Returns the content type of the encrypted content.
OriginatorInfo	getOrginatorInfo() Returns the OriginatorInfo.
oracle.security.crypto.cert.AttributeSet	getUnprotectedAttribs() Returns the unprotected attributes.
ASN1Integer	getVersion() Deprecated. As of Phaos CMS 2.0.1, replaced by getVersionNumber()
java.math.BigInteger	getVersionNumber() Returns the version number of this CMS Object.
void	mark(int readlimit) Not supported.
boolean	markSupported() Always returns false</false>.
int	read()
int	read(byte[] buffer, int offset, int len)
void	reset() Not supported.
long	skip(long n)
void	terminate() Finish reading the enveloped-data structure.

Methods inherited from class java.io.FilterInputStream

close, read

Methods inherited from class java.lang.Object

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

Constructor Detail

CMSEnvelopedDataInputStream

public CMSEnvelopedDataInputStream(java.io.InputStream in,
                                   PrivateKey recipientPrivateKey,
                                   oracle.security.crypto.cert.X509 recipientCert)

Creates a CMSEnvelopedDataInputStream.

Parameters:

in - The underlying input stream.

recipientPrivateKey - The private key of the recipient.

recipientCert - The recipient's certificate.

CMSEnvelopedDataInputStream

public CMSEnvelopedDataInputStream(CMSInputConnector conn,
                                   PrivateKey recipientPrivateKey,
                                   oracle.security.crypto.cert.X509 recipientCert)

Creates a CMSEnvelopedDataInputStream.

Parameters:

conn - The underlying input connector.

recipientPrivateKey - The private key of the recipient.

recipientCert - The recipient's certificate.

CMSEnvelopedDataInputStream

public CMSEnvelopedDataInputStream(java.io.InputStream in,
                                   SymmetricKey keyEncryptionKey)

Creates a CMSEnvelopedDataInputStream.

Parameters:

in - The underlying input stream.

keyEncryptionKey - The key used for key encipherment.

CMSEnvelopedDataInputStream

public CMSEnvelopedDataInputStream(CMSInputConnector conn,
                                   SymmetricKey keyEncryptionKey)

Creates a CMSEnvelopedDataInputStream.

Parameters:

keyEncryptionKey - The key used for key encipherment.

Method Detail

terminate

public void terminate()
               throws java.io.IOException

Finish reading the enveloped-data structure.

This method must be called only after all the enclosed data has been read.

Specified by:

terminate in class CMSInputStream

Throws:

java.io.IOException - If the encoding is incorrect or an I/O error occurs.

read

public int read()
         throws java.io.IOException

Throws:

java.io.IOException

read

public int read(byte[] buffer,
                int offset,
                int len)
         throws java.io.IOException

Throws:

java.io.IOException

available

public int available()
              throws java.io.IOException

Throws:

java.io.IOException

skip

public long skip(long n)
          throws java.io.IOException

Throws:

java.io.IOException

markSupported

public boolean markSupported()

Always returns false</false>.

Returns:

false

mark

public void mark(int readlimit)

Not supported.

reset

public void reset()
           throws java.io.IOException

Not supported.

Throws:

java.io.IOException - always

getVersionNumber

public java.math.BigInteger getVersionNumber()
                                      throws java.io.IOException

Returns the version number of this CMS Object.

Returns:

The version number as an ASN1Integer.

Throws:

java.io.IOException - An I/O error occurred or the input is incorrectly encoded.

getVersion

public ASN1Integer getVersion()
                       throws java.io.IOException

Deprecated. As of Phaos CMS 2.0.1, replaced by getVersionNumber()

Returns the version number of this CMS Object.

Returns:

The version number.

Throws:

java.io.IOException - If the encoding is incorrect or an I/O error occurs.

getOrginatorInfo

public OriginatorInfo getOrginatorInfo()
                                throws java.io.IOException

Returns the OriginatorInfo.

Returns:

The OriginatorInfo.

Throws:

java.io.IOException - If the encoding is incorrect or an I/O error occurs.

getUnprotectedAttribs

public oracle.security.crypto.cert.AttributeSet getUnprotectedAttribs()
                                                               throws java.io.IOException

Returns the unprotected attributes.

Returns:

The unprotected attributes.

Throws:

java.io.IOException - If the encoding is incorrect or an I/O error occurs.

getEnclosedContentType

public ASN1ObjectID getEnclosedContentType()
                                    throws java.io.IOException

Returns the content type of the encrypted content.

Specified by:

getEnclosedContentType in class CMSInputStream

Returns:

The content type object identifier.

Throws:

java.io.IOException - If the encoding is incorrect or an I/O error occurs.

getContentEncryptionAlgID

public AlgorithmIdentifier getContentEncryptionAlgID()
                                              throws java.io.IOException

Returns the content encryption algorithm.

Returns:

The encryption algorithm identifier.

Throws:

java.io.IOException - If the encoding is incorrect or an I/O error occurs.