com.jalios.util
Class StringEncrypter

java.lang.Object
  com.jalios.util.StringEncrypter

public class StringEncrypter
extends Object

Encrypts and decrypts string using Java Cryptography Extension (JCE)

Version:

$Revision: 33675 $

Author:

Javid Jamae - http://www.devx.com/Java/10MinuteSolution/21385

Nested Class Summary

static class

StringEncrypter.EncryptionException Exception Wrapper for any error that might occur during the encryption or decryption process.

Field Summary

static String	DES_ENCRYPTION_SCHEME DES encryption scheme.
static String	DESEDE_ENCRYPTION_SCHEME DES3 (DESede) encryption scheme.
static String	REVISION

Constructor Summary

StringEncrypter(String encryptionScheme, String encryptionKey)
Create a new StringEncrypter using the specified encryption scheme and key.

Method Summary

String	decrypt(String encryptedString) Decrypt the specified string using this StringEncrypter.
String	encrypt(String unencryptedString) Encrypt the specified string using this StringEncrypter.

Methods inherited from class java.lang.Object

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

Field Detail

REVISION

public static final String REVISION

See Also:

Constant Field Values

DESEDE_ENCRYPTION_SCHEME

public static final String DESEDE_ENCRYPTION_SCHEME

DES3 (DESede) encryption scheme.

See Also:

Constant Field Values

DES_ENCRYPTION_SCHEME

public static final String DES_ENCRYPTION_SCHEME

DES encryption scheme.

See Also:

Constant Field Values

Constructor Detail

StringEncrypter

public StringEncrypter(String encryptionScheme,
                       String encryptionKey)
                throws StringEncrypter.EncryptionException

Create a new StringEncrypter using the specified encryption scheme and key.

Parameters:

encryptionScheme - an encryption scheme from one of the following : DESEDE_ENCRYPTION_SCHEME or DES_ENCRYPTION_SCHEME

encryptionKey - the key to use for the encrypter, must be a valid string of 24 or more characters, must not be null.

Throws:

IllegalArgumentException - if encryptionKey is null or less than 24 characters

StringEncrypter.EncryptionException

Method Detail

encrypt

public String encrypt(String unencryptedString)
               throws StringEncrypter.EncryptionException

Encrypt the specified string using this StringEncrypter.

Parameters:

unencryptedString - the string to encrypt, must not be null or empty.

Returns:

the encrypted string.

Throws:

IllegalArgumentException - if unencryptedString is null or empty

StringEncrypter.EncryptionException

decrypt

public String decrypt(String encryptedString)
               throws StringEncrypter.EncryptionException

Decrypt the specified string using this StringEncrypter.

Parameters:

encryptedString - the string to decrypt, must not be null or empty.

Returns:

the decrypted string.

Throws:

IllegalArgumentException - if encryptedString is null or empty

StringEncrypter.EncryptionException