Package org.kissweb

Class Crypto

java.lang.Object

org.kissweb.Crypto

public final class Crypto
extends Object

This class provides the ability to encrypt/decrypt strings and byte arrays with very strong (AES) encryption. Author: Blake McBride
Date: 2/1/22

This class provides the ability to encrypt/decrypt strings and byte arrays with very strong (AES) encryption.

Constructor Summary

Constructors

Constructor	Description
Crypto()

Method Summary

Modifier and Type	Method	Description
static byte[]	decrypt(String salt, byte[] encryptedValue)	Decrypt a byte array utilizing a slat and the default password.
static String	decrypt(String salt, String encryptedValue)	Decrypt a string utilizing the passed in salt and the default password.
static byte[]	decrypt(String salt, String password, byte[] encryptedValue)	Decrypt a byte array utilizing the passed in salt and password.
static String	decrypt(String salt, String password, String encryptedValue)	Decrypt a string utilizing the passed in salt and password.
static byte[]	decryptWithRandomSalt(byte[] encryptedValue)
static String	decryptWithRandomSalt(String encryptedValue)	Decrypt a string that was encrypted with random salt using the default password.
static byte[]	decryptWithRandomSalt(String password, byte[] encryptedValue)
static String	decryptWithRandomSalt(String password, String encryptedValue)	Decrypt a string that was encrypted with random salt using the provided password.
static byte[]	encrypt(byte[] valueToEnc)	Encrypt with the default password and no salt.
static String	encrypt(String valueToEnc)	Encrypt using the default password and no salt.
static byte[]	encrypt(String salt, byte[] valueToEnc)	Encrypt a byte array utilizing a salt and the default password.
static String	encrypt(String salt, String valueToEnc)	Encrypt a string utilizing the passed in salt and the default password.
static byte[]	encrypt(String salt, String password, byte[] valueToEnc)	Encrypt a byte array utilizing the passed in salt and password.
static String	encrypt(String salt, String password, String valueToEnc)	Encrypt a string utilizing the passed in salt and password.
static byte[]	encryptWithRandomSalt(byte[] valueToEnc)	Encrypt with the default password and random salt.
static String	encryptWithRandomSalt(String valueToEnc)	Encrypt using the default password and random salt.
static byte[]	encryptWithRandomSalt(String password, byte[] valueToEnc)	Encrypt with the given password and random salt.
static String	encryptWithRandomSalt(String password, String valueToEnc)	Encrypt with a given password and random salt.
static void	main(String[] args)
static void	setDefaultPassword(String password)	Set the default password.

Methods inherited from class java.lang.Object

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

Constructor Details

Crypto

public Crypto()

Method Details

encrypt

public static String encrypt(String salt,
 String password,
 String valueToEnc)
                      throws Exception

Encrypt a string utilizing the passed in salt and password.

While salt and password can be any size, they are added together and only the first 32 bytes are used.

Parameters:

salt - the salt or null

password -

valueToEnc -

Returns:

Throws:

Exception

encrypt

public static String encrypt(String salt,
 String valueToEnc)
                      throws Exception

Encrypt a string utilizing the passed in salt and the default password.

Parameters:

salt - the salt or null

valueToEnc -

Returns:

Throws:

Exception

encrypt

public static String encrypt(String valueToEnc)
                      throws Exception

Encrypt using the default password and no salt.

Parameters:

valueToEnc -

Returns:

Throws:

Exception

encryptWithRandomSalt

public static String encryptWithRandomSalt(String password,
 String valueToEnc)
                                    throws Exception

Encrypt with a given password and random salt.

Parameters:

password -

valueToEnc -

Returns:

Throws:

Exception

encryptWithRandomSalt

public static String encryptWithRandomSalt(String valueToEnc)
                                    throws Exception

Encrypt using the default password and random salt.

Parameters:

valueToEnc -

Returns:

Throws:

Exception

encrypt

public static byte[] encrypt(String salt,
 String password,
 byte[] valueToEnc)
                      throws Exception

Encrypt a byte array utilizing the passed in salt and password.

While salt and password can be any size, they are added together and only the first 32 bytes are used.

Parameters:

salt - the salt or null

password -

valueToEnc -

Returns:

Throws:

Exception

encrypt

public static byte[] encrypt(String salt,
 byte[] valueToEnc)
                      throws Exception

Encrypt a byte array utilizing a salt and the default password.

Parameters:

salt - the salt or null

valueToEnc -

Returns:

Throws:

Exception

encrypt

public static byte[] encrypt(byte[] valueToEnc)
                      throws Exception

Encrypt with the default password and no salt.

Parameters:

valueToEnc -

Returns:

Throws:

Exception

encryptWithRandomSalt

public static byte[] encryptWithRandomSalt(String password,
 byte[] valueToEnc)
                                    throws Exception

Encrypt with the given password and random salt.

Parameters:

password -

valueToEnc -

Returns:

Throws:

Exception

encryptWithRandomSalt

public static byte[] encryptWithRandomSalt(byte[] valueToEnc)
                                    throws Exception

Encrypt with the default password and random salt.

Parameters:

valueToEnc -

Returns:

Throws:

Exception

decrypt

public static String decrypt(String salt,
 String password,
 String encryptedValue)
                      throws Exception

Decrypt a string utilizing the passed in salt and password.

While salt and password can be any size, they are added together and only the first 32 bytes are used.

Parameters:

salt - the salt or null

password -

encryptedValue -

Returns:

Throws:

Exception

decrypt

public static String decrypt(String salt,
 String encryptedValue)
                      throws Exception

Decrypt a string utilizing the passed in salt and the default password.

Parameters:

salt - the salt or null

encryptedValue -

Returns:

Throws:

Exception

decryptWithRandomSalt

public static String decryptWithRandomSalt(String password,
 String encryptedValue)
                                    throws Exception

Decrypt a string that was encrypted with random salt using the provided password.

Parameters:

password -

encryptedValue -

Returns:

Throws:

Exception

decryptWithRandomSalt

public static String decryptWithRandomSalt(String encryptedValue)
                                    throws Exception

Decrypt a string that was encrypted with random salt using the default password.

Parameters:

encryptedValue -

Returns:

Throws:

Exception

decrypt

public static byte[] decrypt(String salt,
 String password,
 byte[] encryptedValue)
                      throws Exception

Decrypt a byte array utilizing the passed in salt and password.

While salt and password can be any size, they are added together and only the first 32 bytes are used.

Parameters:

salt - the salt or null

password -

encryptedValue -

Returns:

Throws:

Exception

decrypt

public static byte[] decrypt(String salt,
 byte[] encryptedValue)
                      throws Exception

Decrypt a byte array utilizing a slat and the default password.

Parameters:

salt - the salt or null

encryptedValue -

Returns:

Throws:

Exception

decryptWithRandomSalt

public static byte[] decryptWithRandomSalt(String password,
 byte[] encryptedValue)
                                    throws Exception

Throws:

Exception

decryptWithRandomSalt

public static byte[] decryptWithRandomSalt(byte[] encryptedValue)
                                    throws Exception

Throws:

Exception

setDefaultPassword

public static void setDefaultPassword(String password)

Set the default password. This remains until it is changed.

The password can be any size greater than 0 but only a max of the first 32 bytes will be used.

Parameters:

password - the password

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception