com.jivesoftware.util
Class EncryptionUtil

java.lang.Object
  com.jivesoftware.util.EncryptionUtil

public class EncryptionUtil
extends java.lang.Object

A utility for encrypting strings using different algorithms. All strings are in hex format. The default algorithm for this class is Blowfish.

Constructor Summary

EncryptionUtil(java.lang.String key)
Creates a EncryptionUtil class that uses the algorithm specified by the jive proeprty jive.crypto.algorithm, if the property is not specified then "Blowfish/ECB/PKCS5Padding" will be used.

EncryptionUtil(java.lang.String key, java.lang.String algorithm)
Creates an encryption utility using the specified algorithm

Method Summary

java.lang.String	decryptString(java.lang.String cipherText) Decrypt the string using the cipher that this class was initialized with.
java.lang.String	encryptString(java.lang.String plainText) Encrypts the string using the cipher that this class was initialized with.
static java.lang.String	generateSecretKey() Generates a new secret key using the Blowfish algorithm unless there is another specified by the jive property jive.crypto.algorithm.
static java.lang.String	generateSecretKey(java.lang.String algorithm) Generates a new secret key using the specified algorithm.

Methods inherited from class java.lang.Object

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

Constructor Detail

EncryptionUtil

public EncryptionUtil(java.lang.String key)
               throws java.security.NoSuchAlgorithmException,
                      java.security.InvalidKeyException,
                      javax.crypto.NoSuchPaddingException

Creates a EncryptionUtil class that uses the algorithm specified by the jive proeprty jive.crypto.algorithm, if the property is not specified then "Blowfish/ECB/PKCS5Padding" will be used.

Parameters:

key - Secret key used for encryption/decryption

Throws:

java.security.NoSuchAlgorithmException

java.security.InvalidKeyException

javax.crypto.NoSuchPaddingException

EncryptionUtil

public EncryptionUtil(java.lang.String key,
                      java.lang.String algorithm)
               throws java.security.InvalidKeyException,
                      java.security.NoSuchAlgorithmException,
                      javax.crypto.NoSuchPaddingException

Creates an encryption utility using the specified algorithm

Parameters:

key - Secret key used for encryption/decryption

algorithm - The name of the algorithm (ie "Blowfish" or "DES").

Throws:

java.security.InvalidKeyException

java.security.NoSuchAlgorithmException

javax.crypto.NoSuchPaddingException

Method Detail

encryptString

public java.lang.String encryptString(java.lang.String plainText)
                               throws javax.crypto.BadPaddingException,
                                      javax.crypto.IllegalBlockSizeException

Encrypts the string using the cipher that this class was initialized with.

Parameters:

plainText - The string to encrypt.

Returns:

The encrypted string in hex format.

Throws:

javax.crypto.BadPaddingException

javax.crypto.IllegalBlockSizeException

decryptString

public java.lang.String decryptString(java.lang.String cipherText)
                               throws javax.crypto.IllegalBlockSizeException

Decrypt the string using the cipher that this class was initialized with.

Parameters:

cipherText - String in hex format.

Returns:

Decrypted string.

Throws:

javax.crypto.IllegalBlockSizeException

generateSecretKey

public static java.lang.String generateSecretKey()

Generates a new secret key using the Blowfish algorithm unless there is another specified by the jive property jive.crypto.algorithm.

Returns:

The new secret key.

generateSecretKey

public static java.lang.String generateSecretKey(java.lang.String algorithm)
                                          throws java.security.NoSuchAlgorithmException

Generates a new secret key using the specified algorithm.

Parameters:

algorithm - The encryption algorithm.

Returns:

The new secret key.

Throws:

java.security.NoSuchAlgorithmException - Thrown if the algorithm doesn't exist.