/**
* Instanciate value if any from the serialized version. This instanciation must not be performed
* in a dedicated classloader to avoid ClassCastException with the user's code.
*
* @param cl the classloader where to instanciate the object. Can be null : object is instanciated
* in the default caller classloader.
* @return the value if no exception has been thown.
* @throws ClassNotFoundException
* @throws IOException
*/
private Serializable instanciateValue(ClassLoader cl) throws IOException, ClassNotFoundException {
if (this.serializedValue != null && this.value == null) {
this.value =
(Serializable) ByteToObjectConverter.ObjectStream.convert(this.serializedValue, cl);
}
return this.value;
}
/**
* Decrypts the encapsulated credentials
*
* @see org.ow2.proactive.authentication.crypto.KeyPairUtil#decrypt(String, String, String,
* byte[])
* @param privKey the private key
* @return the credential data containing the clear data:login, password and key
* @throws KeyException decryption failure, malformed data
*/
public CredData decrypt(PrivateKey privKey) throws KeyException {
byte[] data = null;
byte[] aesClear = null;
// recover clear AES key using the private key
try {
aesClear = KeyPairUtil.decrypt(this.algorithm, privKey, this.cipher, this.aes);
} catch (KeyException e) {
throw new KeyException("Could not decrypt symmetric key", e);
}
// recover clear credentials using the AES key
try {
data = KeyUtil.decrypt(new SecretKeySpec(aesClear, AES_ALGO), AES_CIPHER, this.data);
} catch (KeyException e) {
throw new KeyException("Could not decrypt data", e);
}
// deserialize clear credentials and obtain login & password
try {
return (CredData) ByteToObjectConverter.ObjectStream.convert(data);
} catch (Exception e) {
throw new KeyException(e.getMessage());
}
}
/**
* Instanciate thrown exception if any from the serialized version. This instanciation must not be
* performed in a dedicated classloader to avoid ClassCastException with the user's code.
*
* @param cl the classloader where to instanciate the object. Can be null : object is instanciated
* in the default caller classloader.
* @return the exception that has been thrown if any.
* @throws ClassNotFoundException
* @throws IOException
*/
private Throwable instanciateException(ClassLoader cl)
throws IOException, ClassNotFoundException {
if (this.serializedException != null && this.exception == null) {
this.exception =
(Throwable) ByteToObjectConverter.ObjectStream.convert(this.serializedException, cl);
}
return this.exception;
}
