org.apache.fulcrum.jce.crypto
Class CryptoUtil

java.lang.Object
  org.apache.fulcrum.jce.crypto.CryptoUtil

public final class CryptoUtil
extends java.lang.Object

Helper class to provde generic functions to work with CryptoStreams. The code uses parts from Markus Hahn's Blowfish library found at http://blowfishj.sourceforge.net/

Author:

Siegfried Goeschl , Markus Hahn

Constructor Summary

CryptoUtil()

Method Summary

static void	copy(java.io.InputStream is, java.io.OutputStream os) Pumps the input stream to the output stream.
static void	decrypt(CryptoStreamFactory factory, java.lang.Object source, java.lang.Object target, char[] password) Copies from a source to a target object using decryption and a caller-suppier CryptoStreamFactory.
static void	decrypt(java.lang.Object source, java.lang.Object target, char[] password) Copies from a source to a target object using decryption.
static java.lang.String	decryptString(CryptoStreamFactory factory, java.lang.String cipherText, char[] password) Decrypts an encrypted string into the plain text.
static java.lang.String	decryptString(java.lang.String cipherText, char[] password) Decrypts an encrypted string into the plain text.
static void	encrypt(CryptoStreamFactory factory, java.lang.Object source, java.lang.Object target, char[] password) Copies from a source to a target object using encryption and a caller supplied CryptoStreamFactory.
static void	encrypt(java.lang.Object source, java.lang.Object target, char[] password) Copies from a source to a target object using encryption
static java.lang.String	encryptString(CryptoStreamFactory factory, java.lang.String plainText, char[] password) Encrypts a string into a hex string.
static java.lang.String	encryptString(java.lang.String plainText, char[] password) Encrypts a string into a hex string.
static CryptoStreamFactory	getCryptoStreamFactory()

Methods inherited from class java.lang.Object

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

Constructor Detail

CryptoUtil

public CryptoUtil()

Method Detail

encrypt

public static void encrypt(java.lang.Object source,
                           java.lang.Object target,
                           char[] password)
                    throws java.security.GeneralSecurityException,
                           java.io.IOException

Copies from a source to a target object using encryption

Parameters:

source - the source object

target - the target object

password - the password to use for encryption

Throws:

java.security.GeneralSecurityException - accessing JCE failed

java.io.IOException - accessing the souce failed

encrypt

public static void encrypt(CryptoStreamFactory factory,
                           java.lang.Object source,
                           java.lang.Object target,
                           char[] password)
                    throws java.security.GeneralSecurityException,
                           java.io.IOException

Copies from a source to a target object using encryption and a caller supplied CryptoStreamFactory.

Parameters:

factory - the factory to create the crypto streams

source - the source object

target - the target object

password - the password to use for encryption

Throws:

java.security.GeneralSecurityException - accessing JCE failed

java.io.IOException - accessing the souce failed

decrypt

public static void decrypt(java.lang.Object source,
                           java.lang.Object target,
                           char[] password)
                    throws java.security.GeneralSecurityException,
                           java.io.IOException

Copies from a source to a target object using decryption.

Parameters:

source - the source object

target - the target object

password - the password to use for decryption

Throws:

java.security.GeneralSecurityException - accessing JCE failed

java.io.IOException - accessing the souce failed

decrypt

public static void decrypt(CryptoStreamFactory factory,
                           java.lang.Object source,
                           java.lang.Object target,
                           char[] password)
                    throws java.security.GeneralSecurityException,
                           java.io.IOException

Copies from a source to a target object using decryption and a caller-suppier CryptoStreamFactory.

Parameters:

factory - the factory to create the crypto streams

source - the source object

target - the target object

password - the password to use for decryption

Throws:

java.security.GeneralSecurityException - accessing JCE failed

java.io.IOException - accessing the souce failed

encryptString

public static java.lang.String encryptString(java.lang.String plainText,
                                             char[] password)
                                      throws java.security.GeneralSecurityException,
                                             java.io.IOException

Encrypts a string into a hex string.

Parameters:

plainText - the plain text to be encrypted

password - the password for encryption

Returns:

the encrypted string

Throws:

java.security.GeneralSecurityException - accessing JCE failed

java.io.IOException - accessing the souce failed

encryptString

public static java.lang.String encryptString(CryptoStreamFactory factory,
                                             java.lang.String plainText,
                                             char[] password)
                                      throws java.security.GeneralSecurityException,
                                             java.io.IOException

Encrypts a string into a hex string.

Parameters:

factory - the factory to create the crypto streams

plainText - the plain text to be encrypted

password - the password for encryption

Returns:

the encrypted string

Throws:

java.security.GeneralSecurityException - accessing JCE failed

java.io.IOException - accessing the souce failed

decryptString

public static java.lang.String decryptString(java.lang.String cipherText,
                                             char[] password)
                                      throws java.security.GeneralSecurityException,
                                             java.io.IOException

Decrypts an encrypted string into the plain text. The encrypted string must be a hex string created by encryptString.

Parameters:

cipherText - the encrypted text to be decrypted

password - the password for decryption

Returns:

the decrypted string

Throws:

java.security.GeneralSecurityException - accessing JCE failed

java.io.IOException - accessing the souce failed

decryptString

public static java.lang.String decryptString(CryptoStreamFactory factory,
                                             java.lang.String cipherText,
                                             char[] password)
                                      throws java.security.GeneralSecurityException,
                                             java.io.IOException

Decrypts an encrypted string into the plain text. The encrypted string must be a hex string created by encryptString.

Parameters:

factory - the factory to create the crypto streams

cipherText - the encrypted text to be decrypted

password - the password for decryption

Returns:

the decrypted string

Throws:

java.security.GeneralSecurityException - accessing JCE failed

java.io.IOException - accessing the souce failed

copy

public static void copy(java.io.InputStream is,
                        java.io.OutputStream os)
                 throws java.io.IOException

Pumps the input stream to the output stream.

Parameters:

is - the source input stream

os - the target output stream

Throws:

java.io.IOException - the copying failed

getCryptoStreamFactory

public static CryptoStreamFactory getCryptoStreamFactory()

Returns:

the CryptoStreamFactory to be used