csbase.server.services.administrationservice

Class FileCrypto

java.lang.Object

csbase.server.services.administrationservice.FileCrypto

public class FileCrypto
extends java.lang.Object

A classe FileCrypto oferece métodos para criptografar e descriptografar arquivos a partir de uma senha.

Constructor Summary

Constructors

Constructor and Description
FileCrypto()

Method Summary

Methods

Modifier and Type	Method and Description
static java.lang.String	decrypt(java.lang.String password, byte[] word) Recupera uma String criptografada.
static byte[]	encrypt(java.lang.String password, java.lang.String word) Gera uma String criptografada, a partir de uma senha.
protected static javax.crypto.Cipher	generateCipher(java.lang.String password, int mode) Gera um objeto Cipher (usado nas operações de criptografia), a partir de uma senha.
static void	main(java.lang.String[] args)

Methods inherited from class java.lang.Object

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

Constructor Detail

FileCrypto

public FileCrypto()

Method Detail

main

public static void main(java.lang.String[] args)

generateCipher

protected static javax.crypto.Cipher generateCipher(java.lang.String password,
                                 int mode)
                                             throws java.security.NoSuchAlgorithmException,
                                                    javax.crypto.NoSuchPaddingException,
                                                    java.security.InvalidKeyException,
                                                    java.security.spec.InvalidKeySpecException,
                                                    java.security.InvalidAlgorithmParameterException

Gera um objeto Cipher (usado nas operações de criptografia), a partir de uma senha.

Parameters:

password - senha utilizada na geração de chave de cripto.

mode - define o mode de operação do cipher (criptografar ou descriptografar)

Returns:

.

Throws:

java.security.NoSuchAlgorithmException - .

javax.crypto.NoSuchPaddingException - .

java.security.InvalidKeyException - .

java.security.spec.InvalidKeySpecException - .

java.security.InvalidAlgorithmParameterException - .

encrypt

public static byte[] encrypt(java.lang.String password,
             java.lang.String word)
                      throws java.security.NoSuchAlgorithmException,
                             javax.crypto.NoSuchPaddingException,
                             java.security.InvalidKeyException,
                             java.security.spec.InvalidKeySpecException,
                             java.security.InvalidAlgorithmParameterException,
                             java.io.InvalidClassException,
                             java.io.NotSerializableException,
                             javax.crypto.IllegalBlockSizeException,
                             javax.crypto.BadPaddingException

Gera uma String criptografada, a partir de uma senha.

Parameters:

password - - a senha utilizada

word - a String a ser criptografada.

Returns:

A String criptografada

Throws:

java.security.NoSuchAlgorithmException - .

javax.crypto.NoSuchPaddingException - .

java.security.InvalidKeyException - .

java.security.spec.InvalidKeySpecException - .

java.security.InvalidAlgorithmParameterException - .

java.io.InvalidClassException - .

java.io.NotSerializableException - .

javax.crypto.IllegalBlockSizeException

javax.crypto.BadPaddingException

decrypt

public static java.lang.String decrypt(java.lang.String password,
                       byte[] word)
                                throws java.security.NoSuchAlgorithmException,
                                       javax.crypto.NoSuchPaddingException,
                                       java.security.InvalidKeyException,
                                       java.security.spec.InvalidKeySpecException,
                                       java.security.InvalidAlgorithmParameterException,
                                       javax.crypto.IllegalBlockSizeException,
                                       javax.crypto.BadPaddingException,
                                       java.lang.ClassNotFoundException,
                                       java.io.InvalidClassException,
                                       java.io.StreamCorruptedException,
                                       java.io.OptionalDataException,
                                       java.io.FileNotFoundException

Recupera uma String criptografada.

Parameters:

password - - a senha utilizada

word - a String a ser criptografada.

Returns:

a String criptografada

Throws:

java.security.NoSuchAlgorithmException - .

javax.crypto.NoSuchPaddingException - .

java.security.InvalidKeyException - .

java.security.spec.InvalidKeySpecException - .

java.security.InvalidAlgorithmParameterException - .

javax.crypto.IllegalBlockSizeException - .

javax.crypto.BadPaddingException - .

java.lang.ClassNotFoundException - .

java.io.InvalidClassException - .

java.io.StreamCorruptedException - .

java.io.OptionalDataException - .

java.io.FileNotFoundException - .