Package org.bouncycastle.cms

Class CMSAuthEnvelopedDataStreamGenerator

java.lang.Object

org.bouncycastle.cms.CMSEnvelopedGenerator

org.bouncycastle.cms.CMSAuthEnvelopedGenerator

org.bouncycastle.cms.CMSAuthEnvelopedDataStreamGenerator

public class CMSAuthEnvelopedDataStreamGenerator
extends CMSAuthEnvelopedGenerator

Generate authenticated enveloped CMS data with streaming support.

When using this generator, note:

• The returned OutputStream must be closed to finalize encryption and authentication
• Closing the returned stream does not close the underlying OutputStream passed to open()
• Callers are responsible for closing the underlying OutputStream separately

Field Summary

Fields inherited from class org.bouncycastle.cms.CMSAuthEnvelopedGenerator

AES128_CCM, AES128_GCM, AES192_CCM, AES192_GCM, AES256_CCM, AES256_GCM, authAttrsGenerator, ChaCha20Poly1305, originatorInfo, unauthAttrsGenerator

Fields inherited from class org.bouncycastle.cms.CMSEnvelopedGenerator

AES128_CBC, AES128_WRAP, AES192_CBC, AES192_WRAP, AES256_CBC, AES256_WRAP, CAMELLIA128_CBC, CAMELLIA128_WRAP, CAMELLIA192_CBC, CAMELLIA192_WRAP, CAMELLIA256_CBC, CAMELLIA256_WRAP, CAST5_CBC, DES_EDE3_CBC, DES_EDE3_WRAP, ECDH_SHA1KDF, ECMQV_SHA1KDF, ECMQV_SHA224KDF, ECMQV_SHA256KDF, ECMQV_SHA384KDF, ECMQV_SHA512KDF, IDEA_CBC, RC2_CBC, SEED_CBC, SEED_WRAP, unprotectedAttributeGenerator

Constructor Summary

Constructors

Constructor	Description
CMSAuthEnvelopedDataStreamGenerator()

Method Summary

Modifier and Type	Method	Description
protected OutputStream	open(OutputStream out, org.bouncycastle.asn1.ASN1EncodableVector recipientInfos, OutputAEADEncryptor encryptor)
OutputStream	open(OutputStream out, OutputAEADEncryptor encryptor)	generate an enveloped object that contains an CMS Enveloped Data object using the given encryptor.
protected OutputStream	open(org.bouncycastle.asn1.ASN1ObjectIdentifier dataType, OutputStream out, org.bouncycastle.asn1.ASN1EncodableVector recipientInfos, OutputAEADEncryptor encryptor)
void	setBEREncodeRecipients(boolean berEncodeRecipientSet)	Use a BER Set to store the recipient information
void	setBufferSize(int bufferSize)	Set the underlying string size for encapsulated data

Methods inherited from class org.bouncycastle.cms.CMSAuthEnvelopedGenerator

addRecipientInfoGenerator, setAuthenticatedAttributeGenerator, setOriginatorInfo, setUnauthenticatedAttributeGenerator

Methods inherited from class org.bouncycastle.cms.CMSEnvelopedGenerator

setUnprotectedAttributeGenerator

Methods inherited from class java.lang.Object

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

Constructor Details

CMSAuthEnvelopedDataStreamGenerator

public CMSAuthEnvelopedDataStreamGenerator()

Method Details

setBufferSize

public void setBufferSize(int bufferSize)

Set the underlying string size for encapsulated data

Parameters:

bufferSize - length of octet strings to buffer the data.

setBEREncodeRecipients

public void setBEREncodeRecipients(boolean berEncodeRecipientSet)

Use a BER Set to store the recipient information

open

protected OutputStream open(org.bouncycastle.asn1.ASN1ObjectIdentifier dataType,
 OutputStream out,
 org.bouncycastle.asn1.ASN1EncodableVector recipientInfos,
 OutputAEADEncryptor encryptor)
                     throws IOException

Throws:

IOException

open

protected OutputStream open(OutputStream out,
 org.bouncycastle.asn1.ASN1EncodableVector recipientInfos,
 OutputAEADEncryptor encryptor)
                     throws CMSException

Throws:

CMSException

open

public OutputStream open(OutputStream out,
 OutputAEADEncryptor encryptor)
                  throws CMSException,
IOException

generate an enveloped object that contains an CMS Enveloped Data object using the given encryptor.

Stream handling note: Closing the returned stream finalizes the CMS structure but does not close the underlying output stream. The caller remains responsible for managing the lifecycle of out.

Parameters:

out - the output stream to write the CMS structure to

encryptor - the cipher to use for encryption

Returns:

an output stream that writes encrypted and authenticated content

Throws:

CMSException

IOException