Class CMSCompressedData

java.lang.Object

org.bouncycastle.cms.CMSCompressedData

All Implemented Interfaces:

org.bouncycastle.util.Encodable

public class CMSCompressedData
extends Object
implements org.bouncycastle.util.Encodable

containing class for an CMS Compressed Data object

    CMSCompressedData cd = new CMSCompressedData(inputStream);

    process(cd.getContent(new ZlibExpanderProvider()));

Constructor Summary

Constructors

Constructor	Description
CMSCompressedData(byte[] compressedData)	Create a CMSCompressedData object from its encoding.
CMSCompressedData(InputStream compressedData)	Create a CMSCompressedData object from a stream.
CMSCompressedData(org.bouncycastle.asn1.cms.ContentInfo contentInfo)	Create a CMSCompressedData object from an already-parsed ContentInfo.

Method Summary

Modifier and Type	Method	Description
org.bouncycastle.asn1.ASN1ObjectIdentifier	getCompressedContentType()
byte[]	getContent(InputExpanderProvider expanderProvider)	Return the uncompressed content.
CMSTypedStream	getContentStream(InputExpanderProvider expanderProvider)
org.bouncycastle.asn1.ASN1ObjectIdentifier	getContentType()
byte[]	getEncoded()	return the ASN.1 encoded representation of this object.
org.bouncycastle.asn1.cms.ContentInfo	toASN1Structure()	return the ContentInfo

Methods inherited from class Object

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

Constructor Details

CMSCompressedData

public CMSCompressedData(byte[] compressedData)
                  throws CMSException

Create a CMSCompressedData object from its encoding.

Parameters:

compressedData - the complete encoding of the CompressedData structure (a CMS ContentInfo). The array must hold the entire encoding and nothing extra - trailing bytes beyond the CompressedData are not permitted.

Throws:

CMSException - if the encoding cannot be parsed as a CompressedData.

CMSCompressedData

public CMSCompressedData(InputStream compressedData)
                  throws CMSException

Create a CMSCompressedData object from a stream.

Parameters:

compressedData - a stream positioned at the start of the CompressedData encoding (a CMS ContentInfo).

Throws:

CMSException - if the encoding cannot be parsed as a CompressedData.

CMSCompressedData

public CMSCompressedData(org.bouncycastle.asn1.cms.ContentInfo contentInfo)
                  throws CMSException

Create a CMSCompressedData object from an already-parsed ContentInfo.

Parameters:

contentInfo - the ContentInfo carrying the CompressedData.

Throws:

CMSException - if the ContentInfo does not hold a well-formed CompressedData.

Method Details

getContentType

public org.bouncycastle.asn1.ASN1ObjectIdentifier getContentType()

getCompressedContentType

public org.bouncycastle.asn1.ASN1ObjectIdentifier getCompressedContentType()

getContentStream

public CMSTypedStream getContentStream(InputExpanderProvider expanderProvider)
                                throws CMSException

Throws:

CMSException

getContent

public byte[] getContent(InputExpanderProvider expanderProvider)
                  throws CMSException

Return the uncompressed content.

Parameters:

expanderProvider - a provider of expander algorithm implementations.

Returns:

the uncompressed content

Throws:

CMSException - if there is an exception un-compressing the data.

toASN1Structure

public org.bouncycastle.asn1.cms.ContentInfo toASN1Structure()

return the ContentInfo

getEncoded

public byte[] getEncoded()
                  throws IOException

return the ASN.1 encoded representation of this object.

Specified by:

getEncoded in interface org.bouncycastle.util.Encodable

Throws:

IOException