org.bouncycastle.cms

Class CMSEnvelopedData

java.lang.Object

org.bouncycastle.cms.CMSEnvelopedData

Direct Known Subclasses:

SMIMEEnveloped

public class CMSEnvelopedData
extends Object

containing class for an CMS Enveloped Data object

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 Summary

Constructors

Constructor and Description
CMSEnvelopedData(byte[] envelopedData)
CMSEnvelopedData(org.bouncycastle.asn1.cms.ContentInfo contentInfo)
CMSEnvelopedData(InputStream envelopedData)

Method Summary

Methods

Modifier and Type	Method and Description
org.bouncycastle.asn1.cms.ContentInfo	getContentInfo() return the ContentInfo
byte[]	getEncoded() return the ASN.1 encoded representation of this object.
String	getEncryptionAlgOID() return the object identifier for the content encryption algorithm.
AlgorithmParameters	getEncryptionAlgorithmParameters(Provider provider) Return an AlgorithmParameters object giving the encryption parameters used to encrypt the message content.
AlgorithmParameters	getEncryptionAlgorithmParameters(String provider) Return an AlgorithmParameters object giving the encryption parameters used to encrypt the message content.
byte[]	getEncryptionAlgParams() return the ASN.1 encoded encryption algorithm parameters, or null if there aren't any.
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.

Methods inherited from class java.lang.Object

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

Constructor Detail

CMSEnvelopedData

public CMSEnvelopedData(byte[] envelopedData)
                 throws CMSException

Throws:

CMSException

CMSEnvelopedData

public CMSEnvelopedData(InputStream envelopedData)
                 throws CMSException

Throws:

CMSException

CMSEnvelopedData

public CMSEnvelopedData(org.bouncycastle.asn1.cms.ContentInfo contentInfo)

Method Detail

getEncryptionAlgOID

public String getEncryptionAlgOID()

return the object identifier for the content encryption algorithm.

getEncryptionAlgParams

public byte[] getEncryptionAlgParams()

return the ASN.1 encoded encryption algorithm parameters, or null if there aren't any.

getEncryptionAlgorithmParameters

public AlgorithmParameters getEncryptionAlgorithmParameters(String provider)
                                                     throws CMSException,
                                                            NoSuchProviderException

Return an AlgorithmParameters object giving the encryption parameters used to encrypt the message content.

Parameters:

provider - the provider to generate the parameters for.

Returns:

the parameters object, null if there is not one.

Throws:

CMSException - if the algorithm cannot be found, or the parameters can't be parsed.

NoSuchProviderException - if the provider cannot be found.

getEncryptionAlgorithmParameters

public AlgorithmParameters getEncryptionAlgorithmParameters(Provider provider)
                                                     throws CMSException

Return an AlgorithmParameters object giving the encryption parameters used to encrypt the message content.

Parameters:

provider - the provider to generate the parameters for.

Returns:

the parameters object, null if there is not one.

Throws:

CMSException - if the algorithm cannot be found, or the parameters can't be parsed.

getRecipientInfos

public RecipientInformationStore getRecipientInfos()

return a store of the intended recipients for this message

getContentInfo

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

return the ContentInfo

getUnprotectedAttributes

public org.bouncycastle.asn1.cms.AttributeTable getUnprotectedAttributes()

return a table of the unprotected attributes indexed by the OID of the attribute.

getEncoded

public byte[] getEncoded()
                  throws IOException

return the ASN.1 encoded representation of this object.

Throws:

IOException