com.virgilsecurity.sdk.crypto

Class ChunkCipher

java.lang.Object

com.virgilsecurity.sdk.crypto.CipherBase

com.virgilsecurity.sdk.crypto.ChunkCipher

All Implemented Interfaces:

AutoCloseable

public class ChunkCipher
extends CipherBase

This class provides the functionality of a cryptographic cipher for encryption and decryption by chunks.

Author:

Andrii Iakovenko

Field Summary

Fields

Modifier and Type	Field and Description
static int	PREFERRED_CHUNK_SIZE

Fields inherited from class com.virgilsecurity.sdk.crypto.CipherBase

cipher

Constructor Summary

Constructors

Constructor and Description
ChunkCipher() Create a new instance of ChunkCipher

Method Summary

Modifier and Type	Method and Description
void	finish() Finish data processing.
byte[]	process(byte[] data) Process chunk.
long	startDecryptionWithKey(Recipient recipient, PrivateKey privateKey) Start decryption with private key.
long	startDecryptionWithKey(Recipient recipient, PrivateKey privateKey, Password privateKeyPassword) Start decryption with private key.
long	startDecryptionWithPassword(Password password) Start decryption with password.
long	startEncryption() Start encryption.
long	startEncryption(long preferredChunkSize) Start encryption.

Methods inherited from class com.virgilsecurity.sdk.crypto.CipherBase

addKeyRecipient, addKeyRecipient, addPasswordRecipient, addPasswordRecipient, close, customParams, defineContentInfoSize, getContentInfo, removeAllRecipients, removeKeyRecipient, removePasswordRecipient, setContentInfo

Methods inherited from class java.lang.Object

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

Field Detail

PREFERRED_CHUNK_SIZE

public static final int PREFERRED_CHUNK_SIZE

Constructor Detail

ChunkCipher

public ChunkCipher()

Create a new instance of ChunkCipher

Method Detail

startEncryption

public long startEncryption(long preferredChunkSize)

Start encryption.

Parameters:

preferredChunkSize - the preferred chunk size.

Returns:

startEncryption

public long startEncryption()

Start encryption.

Returns:

startDecryptionWithKey

public long startDecryptionWithKey(Recipient recipient,
                                   PrivateKey privateKey,
                                   Password privateKeyPassword)

Start decryption with private key.

Parameters:

recipient - the key recipient.

privateKey - the private key of recipient.

privateKeyPassword - the password of private key.

Returns:

startDecryptionWithKey

public long startDecryptionWithKey(Recipient recipient,
                                   PrivateKey privateKey)

Start decryption with private key.

Parameters:

recipient - the key recipient.

privateKey - the private key of recipient.

Returns:

startDecryptionWithPassword

public long startDecryptionWithPassword(Password password)

Start decryption with password.

Parameters:

password - the password.

Returns:

process

public byte[] process(byte[] data)

Process chunk.

Parameters:

data - the data to be processed.

Returns:

the result of chunk processing.

finish

public void finish()

Finish data processing.