kz.gamma.cms
Class RecipientInformation

java.lang.Object
  kz.gamma.cms.RecipientInformation

Direct Known Subclasses:

KEKRecipientInformation, KeyAgreeRecipientInformation, KeyTransRecipientInformation, PasswordRecipientInformation

public abstract class RecipientInformation
extends java.lang.Object

Field Summary

protected java.io.InputStream	_data
protected AlgorithmIdentifier	_encAlg
protected AlgorithmIdentifier	_keyEncAlg
protected RecipientId	_rid
private static ASN1Null	asn1Null

Constructor Summary

protected

RecipientInformation(AlgorithmIdentifier encAlg, AlgorithmIdentifier keyEncAlg, java.io.InputStream data)

Method Summary

private byte[]	encodeObj(DEREncodable obj)
byte[]	getContent(java.security.Key key, java.lang.String provider)
protected CMSTypedStream	getContentFromSessionKey(java.security.Key sKey, java.lang.String provider)
abstract CMSTypedStream	getContentStream(java.security.Key key, java.lang.String provider)
java.lang.String	getKeyEncryptionAlgOID() return the object identifier for the key encryption algorithm.
java.security.AlgorithmParameters	getKeyEncryptionAlgorithmParameters(java.lang.String provider) Return an AlgorithmParameters object giving the encryption parameters used to encrypt the key this recipient holds.
byte[]	getKeyEncryptionAlgParams() return the ASN.1 encoded key encryption algorithm parameters, or null if there aren't any.
RecipientId	getRID()

Methods inherited from class java.lang.Object

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

Field Detail

asn1Null

private static final ASN1Null asn1Null

_rid

protected RecipientId _rid

_encAlg

protected AlgorithmIdentifier _encAlg

_keyEncAlg

protected AlgorithmIdentifier _keyEncAlg

_data

protected java.io.InputStream _data

Constructor Detail

RecipientInformation

protected RecipientInformation(AlgorithmIdentifier encAlg,
                               AlgorithmIdentifier keyEncAlg,
                               java.io.InputStream data)

Method Detail

getRID

public RecipientId getRID()

encodeObj

private byte[] encodeObj(DEREncodable obj)
                  throws java.io.IOException

Throws:

java.io.IOException

getKeyEncryptionAlgOID

public java.lang.String getKeyEncryptionAlgOID()

return the object identifier for the key encryption algorithm.

Returns:

OID for key encryption algorithm.

getKeyEncryptionAlgParams

public byte[] getKeyEncryptionAlgParams()

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

Returns:

ASN.1 encoding of key encryption algorithm parameters.

getKeyEncryptionAlgorithmParameters

public java.security.AlgorithmParameters getKeyEncryptionAlgorithmParameters(java.lang.String provider)
                                                                      throws CMSException,
                                                                             java.security.NoSuchProviderException

Return an AlgorithmParameters object giving the encryption parameters used to encrypt the key this recipient holds.

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.

java.security.NoSuchProviderException - if the provider cannot be found.

getContentFromSessionKey

protected CMSTypedStream getContentFromSessionKey(java.security.Key sKey,
                                                  java.lang.String provider)
                                           throws CMSException,
                                                  java.security.NoSuchProviderException

Throws:

CMSException

java.security.NoSuchProviderException

getContent

public byte[] getContent(java.security.Key key,
                         java.lang.String provider)
                  throws CMSException,
                         java.security.NoSuchProviderException

Throws:

CMSException

java.security.NoSuchProviderException

getContentStream

public abstract CMSTypedStream getContentStream(java.security.Key key,
                                                java.lang.String provider)
                                         throws CMSException,
                                                java.security.NoSuchProviderException

Throws:

CMSException

java.security.NoSuchProviderException