Package com.kheops.util

Class RsaCipher

java.lang.Object

com.kheops.util.RsaCipher

All Implemented Interfaces:

DecryptionCipher, EncryptionCipher

public class RsaCipher
extends Object
implements EncryptionCipher, DecryptionCipher

Field Summary

Fields

Modifier and Type	Field	Description
static final String	PRIVATE_KEY_FILENAME
static final String	PUBLIC_KEY_FILENAME

Constructor Summary

Constructors

Constructor	Description
RsaCipher(File keyDirectory)

Method Summary

Modifier and Type	Method	Description
byte[]	decrypt(byte[] data)	Decrypts the specified data.
byte[]	encrypt(byte[] data)	Encrypts the specified data.
byte[]	encrypt(byte[] data, PublicKey publicKey)
byte[]	getPublicKey()
void	init()	Initializes the cipher instance.

Methods inherited from class java.lang.Object

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

Field Details

PRIVATE_KEY_FILENAME

public static final String PRIVATE_KEY_FILENAME

See Also:

• Constant Field Values

PUBLIC_KEY_FILENAME

public static final String PUBLIC_KEY_FILENAME

See Also:

• Constant Field Values

Constructor Details

RsaCipher

public RsaCipher(File keyDirectory)

Method Details

init

public void init()
          throws Exception

Description copied from interface: EncryptionCipher

Initializes the cipher instance.

Specified by:

init in interface DecryptionCipher

Specified by:

init in interface EncryptionCipher

Throws:

Exception

decrypt

public byte[] decrypt(byte[] data)
               throws GeneralSecurityException

Description copied from interface: DecryptionCipher

Decrypts the specified data.

Specified by:

decrypt in interface DecryptionCipher

Parameters:

data - the data to decrypt.

Returns:

a new byte array that contains decrypted data.

Throws:

GeneralSecurityException

encrypt

public byte[] encrypt(byte[] data)
               throws GeneralSecurityException

Description copied from interface: EncryptionCipher

Encrypts the specified data.

Specified by:

encrypt in interface EncryptionCipher

Parameters:

data - the data to encrypt.

Returns:

a new byte array that contains encrypted data.

Throws:

GeneralSecurityException

encrypt

public byte[] encrypt(byte[] data,
 PublicKey publicKey)
               throws GeneralSecurityException

Throws:

GeneralSecurityException

getPublicKey

public byte[] getPublicKey()