Package com.jbstrap.core.utils

Class CryptoUtils

java.lang.Object

com.jbstrap.core.utils.CryptoUtils

public final class CryptoUtils
extends Object

Utility methods for crypto operations.

Since:

4.0

Author:

JBStrap

Method Summary

Modifier and Type	Method	Description
static String	aesDecrypt(String str, String secretKey, String initVector)	Decrypts the specified string, using AES 128bit encryption
static String	aesEncrypt(String str, String secretKey, String initVector)	Encrypts the specified string, using AES 128bit encryption
static String	base64Decrypt(String str)	Decrypts the specified Base64 text
static String	base64Encrypt(byte[] data)	Encrypts the specified Byte Array, using Base64 encryption
static String	base64Encrypt(String str)	Encrypts the specified string using Base64 encryption
static String	md5(String input)	Encrypts the specified string using MD5

Methods inherited from class java.lang.Object

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

Method Details

md5

public static String md5(String input)

Encrypts the specified string using MD5

Parameters:

input - The string to be encrypted

Returns:

The encrypted text as M5 hash. If there was an error during the encryption, it will return with null.

aesEncrypt

public static String aesEncrypt(String str,
 String secretKey,
 String initVector)
                         throws UnsupportedEncodingException,
NoSuchAlgorithmException,
NoSuchPaddingException,
InvalidKeyException,
InvalidAlgorithmParameterException,
IllegalBlockSizeException,
BadPaddingException

Encrypts the specified string, using AES 128bit encryption

Parameters:

str - The string to be encrypted

secretKey - The 128 bit secret key

initVector - The 128 bit init vector

Returns:

The encrypted text

Throws:

UnsupportedEncodingException - If the text encoding is not supported

NoSuchPaddingException - This exception is thrown when a particular padding mechanism is requested but is not available in the environment.

NoSuchAlgorithmException - This exception is thrown when a particular cryptographic algorithm is requested but is not available in the environment.

InvalidAlgorithmParameterException - This is the exception for invalid or inappropriate algorithm parameters.

InvalidKeyException - This is the exception for invalid Keys (invalid encoding, wrong length, uninitialized, etc).

BadPaddingException - If the padding was unsuccessful

IllegalBlockSizeException - If the length of data provided to a block cipher is incorrect,

aesDecrypt

public static String aesDecrypt(String str,
 String secretKey,
 String initVector)
                         throws UnsupportedEncodingException,
NoSuchAlgorithmException,
NoSuchPaddingException,
InvalidKeyException,
InvalidAlgorithmParameterException,
IllegalBlockSizeException,
BadPaddingException

Decrypts the specified string, using AES 128bit encryption

Parameters:

str - The string to be decrypted

secretKey - The 128 bit secret key

initVector - The 128 bit init vector

Returns:

The decrypted text

Throws:

UnsupportedEncodingException - If the text encoding is not supported

NoSuchPaddingException - This exception is thrown when a particular padding mechanism is requested but is not available in the environment.

NoSuchAlgorithmException - This exception is thrown when a particular cryptographic algorithm is requested but is not available in the environment.

InvalidAlgorithmParameterException - This is the exception for invalid or inappropriate algorithm parameters.

InvalidKeyException - This is the exception for invalid Keys (invalid encoding, wrong length, uninitialized, etc).

BadPaddingException - If the padding was unsuccessful

IllegalBlockSizeException - If the length of data provided to a block cipher is incorrect,

base64Encrypt

public static String base64Encrypt(String str)
                            throws UnsupportedEncodingException

Encrypts the specified string using Base64 encryption

Parameters:

str - The string to be encrypted

Returns:

The string, encrypted with Base64

Throws:

UnsupportedEncodingException - If the text encoding is not supported

base64Encrypt

public static String base64Encrypt(byte[] data)
                            throws UnsupportedEncodingException

Encrypts the specified Byte Array, using Base64 encryption

Parameters:

data - The array to be encrypted

Returns:

The Base64 string

Throws:

UnsupportedEncodingException - If the text encoding is not supported

base64Decrypt

public static String base64Decrypt(String str)

Decrypts the specified Base64 text

Parameters:

str - The Base64 text

Returns:

The decrypted value