public class CMSEnvelopedData extends Object implements Encodable
Example of use - assuming the first recipient matches the private key we have.
CMSEnvelopedData ed = new CMSEnvelopedData(inputStream); RecipientInformationStore recipients = ed.getRecipientInfos(); Collection c = recipients.getRecipients(); Iterator it = c.iterator(); if (it.hasNext()) { RecipientInformation recipient = (RecipientInformation)it.next(); byte[] recData = recipient.getContent(new JceKeyTransEnvelopedRecipient(privateKey).setProvider("BC")); processData(recData); }
Constructor and Description |
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CMSEnvelopedData(byte[] envelopedData) |
CMSEnvelopedData(ContentInfo contentInfo)
Construct a CMSEnvelopedData object from a content info object.
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CMSEnvelopedData(InputStream envelopedData) |
Modifier and Type | Method and Description |
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AlgorithmIdentifier |
getContentEncryptionAlgorithm()
Return the content encryption algorithm details for the data in this object.
|
byte[] |
getEncoded()
return the ASN.1 encoded representation of this object.
|
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
|
AttributeTable |
getUnprotectedAttributes()
return a table of the unprotected attributes indexed by
the OID of the attribute.
|
ContentInfo |
toASN1Structure()
return the ContentInfo
|
public CMSEnvelopedData(byte[] envelopedData) throws CMSException
CMSException
public CMSEnvelopedData(InputStream envelopedData) throws CMSException
CMSException
public CMSEnvelopedData(ContentInfo contentInfo) throws CMSException
contentInfo
- the contentInfo containing the CMS EnvelopedData object.CMSException
- in the case where malformed content is encountered.public OriginatorInformation getOriginatorInfo()
public AlgorithmIdentifier getContentEncryptionAlgorithm()
public String getEncryptionAlgOID()
public byte[] getEncryptionAlgParams()
public RecipientInformationStore getRecipientInfos()
public ContentInfo toASN1Structure()
public AttributeTable getUnprotectedAttributes()
public byte[] getEncoded() throws IOException
getEncoded
in interface Encodable
IOException
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