com.toolsverse.util.encryption

Class SymmetricEncryptor

Object

com.toolsverse.util.encryption.SymmetricEncryptor

public class SymmetricEncryptor
extends Object

SymmetricEncryptor uses symmetric key to encrypt and decrypt strings, streams and files.

Since:

1.0

Version:

2.0

Constructor Summary

Constructors

Constructor and Description
SymmetricEncryptor()

Method Summary

Modifier and Type	Method and Description
static InputStream	decrypt(InputStream encryptedStream) Uses the default key to decrypt an InputStream.
static InputStream	decrypt(Key key, InputStream encryptedStream) Uses the specific key to decrypt an InputStream.
static String	decrypt(Key key, String encryptedStr) Uses the specific key to decrypt string.
static String	decrypt(String encryptedStr) Uses the default key to decrypt string.
static void	decryptFile(Key key, String encryptedFile) Uses the specific key to decrypt file.
static void	decryptFile(String encryptedFile) Uses the default key to decrypt file.
static String	decryptPassword(Key key, String encryptedStr) Decrypts password.
static OutputStream	encrypt(Key key, OutputStream streamToEncrypt) Encrypts the OutputStream using specific key.
static String	encrypt(Key key, String strToEncrypt) Encrypts string using specific key.
static OutputStream	encrypt(OutputStream streamToEncrypt) Encrypts the OutputStream using default key.
static String	encrypt(String strToEncrypt) Encrypts string using default key.
static void	encryptFile(Key key, String fileToEncrypt) Encrypts the file using specific key.
static void	encryptFile(String fileToEncrypt) Encrypts the file using default key.
static String	encryptPassword(Key key, String strToEncrypt) Encrypts password.
static PublicKey	getPublicKey(byte[] bytes, String algorithm) Builds the public key from the array of bytes key using given algorithm.
static SecretKey	getSecretKey(String keyString) Gets the SecretKey from the string.

Methods inherited from class Object

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

Constructor Detail

SymmetricEncryptor

public SymmetricEncryptor()

Method Detail

decrypt

public static InputStream decrypt(InputStream encryptedStream)
                           throws GeneralSecurityException

Uses the default key to decrypt an InputStream.

Parameters:

encryptedStream - the InputStream

Returns:

the decrypted InputStream

Throws:

GeneralSecurityException - the general security exception

decrypt

public static InputStream decrypt(Key key,
                                  InputStream encryptedStream)
                           throws GeneralSecurityException

Uses the specific key to decrypt an InputStream.

Parameters:

key - the encryption key

encryptedStream - the InputStream

Returns:

the decrypted InputStream

Throws:

GeneralSecurityException - the general security exception

decrypt

public static String decrypt(Key key,
                             String encryptedStr)
                      throws GeneralSecurityException

Uses the specific key to decrypt string.

Parameters:

key - the encryption key

encryptedStr - the encrypted string

Returns:

the decrypted string

Throws:

GeneralSecurityException - the general security exception

decrypt

public static String decrypt(String encryptedStr)
                      throws GeneralSecurityException

Uses the default key to decrypt string.

Parameters:

encryptedStr - the encrypted string

Returns:

the decrypted string

Throws:

GeneralSecurityException - the general security exception

decryptFile

public static void decryptFile(Key key,
                               String encryptedFile)
                        throws GeneralSecurityException

Uses the specific key to decrypt file.

Parameters:

key - the encryption key

encryptedFile - the name of the encrypted file

Throws:

GeneralSecurityException - the general security exception

decryptFile

public static void decryptFile(String encryptedFile)
                        throws GeneralSecurityException

Uses the default key to decrypt file.

Parameters:

encryptedFile - the name of the encrypted file

Throws:

GeneralSecurityException - the general security exception

decryptPassword

public static String decryptPassword(Key key,
                                     String encryptedStr)
                              throws GeneralSecurityException

Decrypts password.

Parameters:

key - the key

encryptedStr - the encrypted password

Returns:

the decrypted password

Throws:

GeneralSecurityException - the general security exception

encrypt

public static OutputStream encrypt(Key key,
                                   OutputStream streamToEncrypt)
                            throws GeneralSecurityException

Encrypts the OutputStream using specific key.

Parameters:

key - the encryption key

streamToEncrypt - the OutputStream to encrypt

Returns:

the output stream

Throws:

GeneralSecurityException - the general security exception

encrypt

public static String encrypt(Key key,
                             String strToEncrypt)
                      throws GeneralSecurityException

Encrypts string using specific key.

Parameters:

key - the encryption key

strToEncrypt - the string to encrypt

Returns:

the string

Throws:

GeneralSecurityException - the general security exception

encrypt

public static OutputStream encrypt(OutputStream streamToEncrypt)
                            throws GeneralSecurityException

Encrypts the OutputStream using default key.

Parameters:

streamToEncrypt - the OutputStream to encrypt

Returns:

the output stream

Throws:

GeneralSecurityException - the general security exception

encrypt

public static String encrypt(String strToEncrypt)
                      throws GeneralSecurityException

Encrypts string using default key.

Parameters:

strToEncrypt - the string to encrypt

Returns:

the string

Throws:

GeneralSecurityException - the general security exception

encryptFile

public static void encryptFile(Key key,
                               String fileToEncrypt)
                        throws GeneralSecurityException

Encrypts the file using specific key.

Parameters:

key - the encryption key

fileToEncrypt - the name of the file to encrypt

Throws:

GeneralSecurityException - the general security exception

encryptFile

public static void encryptFile(String fileToEncrypt)
                        throws GeneralSecurityException

Encrypts the file using default key.

Parameters:

fileToEncrypt - the name of the file to encrypt

Throws:

GeneralSecurityException - the general security exception

encryptPassword

public static String encryptPassword(Key key,
                                     String strToEncrypt)
                              throws GeneralSecurityException

Encrypts password.

Parameters:

key - the key

strToEncrypt - the password to encrypt

Returns:

the encrypted password

Throws:

GeneralSecurityException - the general security exception

getPublicKey

public static PublicKey getPublicKey(byte[] bytes,
                                     String algorithm)
                              throws InvalidKeySpecException,
                                     NoSuchAlgorithmException

Builds the public key from the array of bytes key using given algorithm.

Parameters:

bytes - the bytes

algorithm - the algorithm

Returns:

the public key

Throws:

InvalidKeySpecException - the invalid key spec exception

NoSuchAlgorithmException - the no such algorithm exception

getSecretKey

public static SecretKey getSecretKey(String keyString)
                              throws GeneralSecurityException

Gets the SecretKey from the string.

Parameters:

keyString - the key string

Returns:

SecretKey

Throws:

GeneralSecurityException - the general security exception