public class CMSEnvelopedDataParser extends CMSContentInfoParser
Note: that because we are in a streaming mode only one recipient can be tried and it is important that the methods on the parser are called in the appropriate order.
Example of use - assuming the first recipient matches the private key we have.
CMSEnvelopedDataParser ep = new CMSEnvelopedDataParser(inputStream);
RecipientInformationStore recipients = ep.getRecipientInfos();
Collection c = recipients.getRecipients();
Iterator it = c.iterator();
if (it.hasNext())
{
RecipientInformation recipient = (RecipientInformation)it.next();
CMSTypedStream recData = recipient.getContentStream(new JceKeyTransEnvelopedRecipient(privateKey).setProvider("BC"));
processDataStream(recData.getContentStream());
}
Note: this class does not introduce buffering - if you are processing large files you should create
the parser with:
CMSEnvelopedDataParser ep = new CMSEnvelopedDataParser(new BufferedInputStream(inputStream, bufSize));
where bufSize is a suitably large buffer size._contentInfo, _data| Constructor | Description |
|---|---|
CMSEnvelopedDataParser(byte[] envelopedData) |
|
CMSEnvelopedDataParser(java.io.InputStream envelopedData) |
| Modifier and Type | Method | Description |
|---|---|---|
org.bouncycastle.asn1.x509.AlgorithmIdentifier |
getContentEncryptionAlgorithm() |
Return the content encryption algorithm details for the data in this object.
|
java.lang.String |
getEncryptionAlgOID() |
return the object identifier for the content encryption algorithm.
|
byte[] |
getEncryptionAlgParams() |
return the ASN.1 encoded encryption algorithm parameters, or null if
there aren't any.
|
OriginatorInformation |
getOriginatorInfo() |
Return the originator information associated with this message if present.
|
RecipientInformationStore |
getRecipientInfos() |
return a store of the intended recipients for this message
|
org.bouncycastle.asn1.cms.AttributeTable |
getUnprotectedAttributes() |
return a table of the unprotected attributes indexed by
the OID of the attribute.
|
closepublic CMSEnvelopedDataParser(byte[] envelopedData)
throws CMSException,
java.io.IOException
CMSExceptionjava.io.IOExceptionpublic CMSEnvelopedDataParser(java.io.InputStream envelopedData)
throws CMSException,
java.io.IOException
CMSExceptionjava.io.IOExceptionpublic java.lang.String getEncryptionAlgOID()
public byte[] getEncryptionAlgParams()
public org.bouncycastle.asn1.x509.AlgorithmIdentifier getContentEncryptionAlgorithm()
public OriginatorInformation getOriginatorInfo()
public RecipientInformationStore getRecipientInfos()
public org.bouncycastle.asn1.cms.AttributeTable getUnprotectedAttributes()
throws java.io.IOException
java.io.IOException