com.kheops.util

Class RsaCipher

java.lang.Object

com.kheops.util.RsaCipher

All Implemented Interfaces:

DecryptionCipher, EncryptionCipher

public class RsaCipher
extends java.lang.Object
implements EncryptionCipher, DecryptionCipher

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	PRIVATE_KEY_FILENAME
static java.lang.String	PUBLIC_KEY_FILENAME

Constructor Summary

Constructors

Constructor and Description
RsaCipher(java.io.File keyDirectory)

Method Summary

Modifier and Type	Method and Description
byte[]	decrypt(byte[] data) Decrypts the specified data.
byte[]	encrypt(byte[] data) Encrypts the specified data.
byte[]	encrypt(byte[] data, java.security.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 Detail

PRIVATE_KEY_FILENAME

public static final java.lang.String PRIVATE_KEY_FILENAME

See Also:

Constant Field Values

PUBLIC_KEY_FILENAME

public static final java.lang.String PUBLIC_KEY_FILENAME

See Also:

Constant Field Values

Constructor Detail

RsaCipher

public RsaCipher(java.io.File keyDirectory)

Method Detail

init

public void init()
          throws java.lang.Exception

Description copied from interface: EncryptionCipher

Initializes the cipher instance.

Specified by:

init in interface DecryptionCipher

Specified by:

init in interface EncryptionCipher

Throws:

java.lang.Exception

decrypt

public byte[] decrypt(byte[] data)
               throws java.security.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:

java.security.GeneralSecurityException

encrypt

public byte[] encrypt(byte[] data)
               throws java.security.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:

java.security.GeneralSecurityException

encrypt

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

Throws:

java.security.GeneralSecurityException

getPublicKey

public byte[] getPublicKey()