Package COSE

Class Encrypt0Message

java.lang.Object

COSE.Attribute

COSE.Message

COSE.EncryptCommon

COSE.Encrypt0Message

public class Encrypt0Message
extends EncryptCommon

The Encrypt0Message object corresponds to the Encrypt COSE message structure. This message structure provides protected and unprotected attributes. The structure only allows for the use of a pre-distributed shared secret to be used to encrypt and decrypt the message.

Field Summary

Fields inherited from class COSE.EncryptCommon

context, rgbEncrypt

Fields inherited from class COSE.Message

emitContent, emitTag, messageTag, rgbContent

Fields inherited from class COSE.Attribute

DO_NOT_SEND, DontSendAttributes, externalData, objDontSend, objProtected, objUnprotected, PROTECTED, ProtectedAttributes, rgbProtected, UNPROTECTED, UnprotectedAttributes

Constructor Summary

Constructors

Constructor	Description
Encrypt0Message()	Create a Encrypt0Message object.
Encrypt0Message(boolean emitTag, boolean emitContent)	Create a Encrypt0Message object.

Method Summary

Modifier and Type	Method	Description
void	DecodeFromCBORObject(com.upokecenter.cbor.CBORObject obj)	Given a CBOR tree, parse the message.
byte[]	decrypt(byte[] rgbKey)	Decrypt the message using the passed in key.
protected com.upokecenter.cbor.CBORObject	EncodeCBORObject()	Internal function used to construct the CBORObject
void	encrypt(byte[] rgbKey)	Encrypt the message using the passed in key.

Methods inherited from class COSE.EncryptCommon

decryptWithKey, getEncryptedContent, ProcessCounterSignatures, setEncryptedContent, validate, validate

Methods inherited from class COSE.Message

addCountersignature, DecodeFromBytes, DecodeFromBytes, EncodeToBytes, EncodeToCBORObject, GetContent, getCountersign1, getCountersignerList, HasContent, SetContent, SetContent, setCountersign1

Methods inherited from class COSE.Attribute

addAttribute, addAttribute, addAttribute, AddProtected, AddProtected, AddProtected, AddUnprotected, AddUnprotected, AddUnprotected, findAttribute, findAttribute, findAttribute, findAttribute, getDoNotSendAttributes, getExternal, getProtectedAttributes, getUnprotectedAttributes, removeAttribute, removeAttribute, setExternal

Methods inherited from class java.lang.Object

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

Constructor Detail

Encrypt0Message

public Encrypt0Message()

Create a Encrypt0Message object. This object corresponds to the encrypt message format in COSE. The leading CBOR tag will be emitted. The message content will be emitted.

Encrypt0Message

public Encrypt0Message(boolean emitTag,
                       boolean emitContent)

Create a Encrypt0Message object. This object corresponds to the encrypt message format in COSE.

Parameters:

emitTag - is the leading CBOR tag emitted

emitContent - is the content emitted

Method Detail

DecodeFromCBORObject

public void DecodeFromCBORObject(com.upokecenter.cbor.CBORObject obj)
                          throws CoseException

Description copied from class: Message

Given a CBOR tree, parse the message. This is an abstract function that is implemented for each different supported COSE message.

Specified by:

DecodeFromCBORObject in class Message

Parameters:

obj - CBORObject to be converted to a message.

Throws:

CoseException - Internal COSE Exception

EncodeCBORObject

protected com.upokecenter.cbor.CBORObject EncodeCBORObject()
                                                    throws CoseException

Internal function used to construct the CBORObject

Specified by:

EncodeCBORObject in class Message

Returns:

the constructed CBORObject

Throws:

CoseException - if the content has not yet been encrypted

decrypt

public byte[] decrypt(byte[] rgbKey)
               throws CoseException

Decrypt the message using the passed in key.

Parameters:

rgbKey - key for decryption

Returns:

the decrypted content

Throws:

CoseException - - Error during decryption

encrypt

public void encrypt(byte[] rgbKey)
             throws CoseException,
                    IllegalStateException

Encrypt the message using the passed in key.

Parameters:

rgbKey - key used for encryption

Throws:

CoseException - - Error during decryption

IllegalStateException - - Error during decryption