com.virgilsecurity.crypto

Class VirgilTinyCipher

java.lang.Object

com.virgilsecurity.crypto.VirgilTinyCipher

All Implemented Interfaces:

AutoCloseable

public class VirgilTinyCipher
extends Object
implements AutoCloseable

This class aim is to minimize encryption output.

Author:

Andrii Iakovenko

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	VirgilTinyCipher.PackageSize

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	swigCMemOwn

Constructor Summary

Constructors

Modifier	Constructor and Description
	VirgilTinyCipher() Create a new instance of VirgilTinyCipher
	VirgilTinyCipher(long packageSize) Create a new instance of VirgilTinyCipher
protected	VirgilTinyCipher(long cPtr, boolean cMemoryOwn)

Method Summary

Modifier and Type	Method and Description
void	addPackage(byte[] pkg) Add package.
void	close()
byte[]	decrypt(byte[] recipientPrivateKey) Decrypt accumulated packages.
byte[]	decrypt(byte[] recipientPrivateKey, byte[] recipientPrivateKeyPassword) Decrypt accumulated packages.
void	delete()
void	encrypt(byte[] data, byte[] recipientPublicKey) Encrypt data with given public key.
void	encryptAndSign(byte[] data, byte[] recipientPublicKey, byte[] senderPrivateKey) Encrypt data with given public key and sign package.
void	encryptAndSign(byte[] data, byte[] recipientPublicKey, byte[] senderPrivateKey, byte[] senderPrivateKeyPassword) Encrypt data with given public key and sign package.
protected void	finalize()
protected static long	getCPtr(VirgilTinyCipher obj)
byte[]	getPackage(long index) Return specific package.
long	getPackageCount() Return total package count.
boolean	isPackagesAccumulated() Define whether all packages was accumulated or not.
void	reset() Prepare cipher for the next encryption.
byte[]	verifyAndDecrypt(byte[] senderPublicKey, byte[] recipientPrivateKey) Verify accumulated packages and then decrypt it.
byte[]	verifyAndDecrypt(byte[] senderPublicKey, byte[] recipientPrivateKey, byte[] recipientPrivateKeyPassword) Verify accumulated packages and then decrypt it.

Methods inherited from class java.lang.Object

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

Field Detail

swigCMemOwn

protected transient boolean swigCMemOwn

Constructor Detail

VirgilTinyCipher

protected VirgilTinyCipher(long cPtr,
                           boolean cMemoryOwn)

VirgilTinyCipher

public VirgilTinyCipher(long packageSize)

Create a new instance of VirgilTinyCipher

Parameters:

packageSize - maximum number of bytes in one package.

VirgilTinyCipher

public VirgilTinyCipher()

Create a new instance of VirgilTinyCipher

Method Detail

getCPtr

protected static long getCPtr(VirgilTinyCipher obj)

finalize

protected void finalize()

Overrides:

finalize in class Object

delete

public void delete()

close

public void close()

Specified by:

close in interface AutoCloseable

reset

public void reset()

Prepare cipher for the next encryption.

SHOULD be used before the next encryption.

encrypt

public void encrypt(byte[] data,
                    byte[] recipientPublicKey)

Encrypt data with given public key.

Parameters:

data - data to be encrypted.

recipientPublicKey - recipient public key.

encryptAndSign

public void encryptAndSign(byte[] data,
                           byte[] recipientPublicKey,
                           byte[] senderPrivateKey,
                           byte[] senderPrivateKeyPassword)

Encrypt data with given public key and sign package.

Parameters:

data - the data to be encrypted.

recipientPublicKey - the recipient public key.

senderPrivateKey - the sender private key protected with password.

senderPrivateKeyPassword - the sender private key password.

encryptAndSign

public void encryptAndSign(byte[] data,
                           byte[] recipientPublicKey,
                           byte[] senderPrivateKey)

Encrypt data with given public key and sign package.

Parameters:

data - the data to be encrypted.

recipientPublicKey - the recipient public key.

senderPrivateKey - the sender private key.

getPackageCount

public long getPackageCount()

Return total package count.

Package count is known when encryption process is completed.

Returns:

the total package count.

getPackage

public byte[] getPackage(long index)

Return specific package.

Return package with specific index.

Packages are available when encryption process is completed.

Parameters:

index - package index.

Returns:

the specific package.

addPackage

public void addPackage(byte[] pkg)

Add package.

Accumulate packages before decryption.

Parameters:

pkg - the package to be accumulated

isPackagesAccumulated

public boolean isPackagesAccumulated()

Define whether all packages was accumulated or not.

Returns:

true if all packages was successfully accumulated, false otherwise.

decrypt

public byte[] decrypt(byte[] recipientPrivateKey,
                      byte[] recipientPrivateKeyPassword)

Decrypt accumulated packages.

Parameters:

recipientPrivateKey - recipient private key.

recipientPrivateKeyPassword - recipient private key password.

Returns:

Decrypted data.

decrypt

public byte[] decrypt(byte[] recipientPrivateKey)

Decrypt accumulated packages.

Parameters:

recipientPrivateKey - recipient private key.

Returns:

Decrypted data.

verifyAndDecrypt

public byte[] verifyAndDecrypt(byte[] senderPublicKey,
                               byte[] recipientPrivateKey,
                               byte[] recipientPrivateKeyPassword)

Verify accumulated packages and then decrypt it.

Parameters:

senderPublicKey - sender public key.

recipientPrivateKey - recipient private key.

recipientPrivateKeyPassword - recipient private key password.

Returns:

Decrypted data.

verifyAndDecrypt

public byte[] verifyAndDecrypt(byte[] senderPublicKey,
                               byte[] recipientPrivateKey)

Verify accumulated packages and then decrypt it.

Parameters:

senderPublicKey - sender public key.

recipientPrivateKey - recipient private key.

Returns:

Decrypted data.