org.universAAL.ri.api.manager.push

Class CryptUtil

java.lang.Object

org.universAAL.ri.api.manager.push.CryptUtil

public class CryptUtil
extends Object

A utility class for encrypting/decrypting strings

Constructor Summary

Constructors

Constructor and Description
CryptUtil()

Method Summary

Modifier and Type	Method and Description
static String	decrypt(String cipher) decrypt the parameter string with the shared key read during initialization
static String	decrypt(String cipher, SecretKey skey) decrypt the first parameter string with the shared key received as the second parameter
static String	encrypt(String clear) encrypt the parameter string with the shared key read during initialization
static String	encrypt(String clear, SecretKey skey) encrypt the first parameter string with the shared key received as the second parameter
static String	generateClientKey(String id)
static SecretKey	genKey(byte[] rawkey)
static String	init(String key) Initialization method - reads the shared key from the file system

Methods inherited from class java.lang.Object

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

Constructor Detail

CryptUtil

public CryptUtil()

Method Detail

init

public static String init(String key)
                   throws Exception

Initialization method - reads the shared key from the file system

Parameters:

String - key - full path to encryption key including file name

Throws:

Exception

decrypt

public static String decrypt(String cipher)
                      throws Exception

decrypt the parameter string with the shared key read during initialization

Parameters:

String - chiper - the string to decrypt

Returns:

the decrypted string

Throws:

Exception

decrypt

public static String decrypt(String cipher,
                             SecretKey skey)
                      throws Exception

decrypt the first parameter string with the shared key received as the second parameter

Parameters:

String - chiper - the string to decrypt

SecretKey - skey - the shared key

Returns:

the decrypted string

Throws:

Exception

encrypt

public static String encrypt(String clear)
                      throws Exception

encrypt the parameter string with the shared key read during initialization

Parameters:

String - clear - the string to encrypt

Returns:

the encrypted string

Throws:

Exception

encrypt

public static String encrypt(String clear,
                             SecretKey skey)
                      throws Exception

encrypt the first parameter string with the shared key received as the second parameter

Parameters:

String - clear - the string to encrypt

SecretKey - skey - the shared key

Returns:

the encrypted string

Throws:

Exception

genKey

public static SecretKey genKey(byte[] rawkey)
                        throws Exception

Throws:

Exception

generateClientKey

public static String generateClientKey(String id)
                                throws Exception

Throws:

Exception