Package com.mdfromhtml.core

Class MDfromHTMLCrypto

java.lang.Object

com.mdfromhtml.core.MDfromHTMLCrypto

public class MDfromHTMLCrypto
extends Object

Utility to mask / unmask text. While there is a well defined key used for masking, a different key can be set as either an environment variable or passed as a system property (e.g., -Dname=value on Java command line) using the name defined by MDfromHTMLMasker.ENV_MASKER_KEY

Field Summary

Fields

Modifier and Type	Field	Description
static byte[]	SALT

Constructor Summary

Constructors

Constructor	Description
MDfromHTMLCrypto()

Method Summary

Modifier and Type	Method	Description
static String	decrypt(String text, char[] key, byte[] salt)	Unmasks the text using the salt and key
static String	decrypt(String text, String key)	Unmasks the text using the key and system supplied cryptographic initialization bytes
static String	encrypt(String text)	Masks the supplied text
static String	encrypt(String text, char[] key, byte[] salt)	Masks the supplied text using the key and salt bytes
static void	main(String[] args)

Methods inherited from class java.lang.Object

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

Field Detail

SALT

public static final byte[] SALT

Constructor Detail

MDfromHTMLCrypto

public MDfromHTMLCrypto()

Method Detail

decrypt

public static String decrypt(String text,
                             char[] key,
                             byte[] salt)
                      throws Exception

Unmasks the text using the salt and key

Parameters:

text - string to be masked

key - character phrase used to mask the text

salt - bytes used to initialize the cryptographic environment

Returns:

unmasked version of the masked text

Throws:

Exception - if there is a problem with the cryptographic environment

decrypt

public static String decrypt(String text,
                             String key)
                      throws Exception

Unmasks the text using the key and system supplied cryptographic initialization bytes

Parameters:

text - string to be unmasked

key - character phrase used to mask the text

Returns:

unmasked version of the masked text

Throws:

Exception - if there is a problem with the cryptographic environment

encrypt

public static String encrypt(String text)
                      throws Exception

Masks the supplied text

Parameters:

text - string to be masked

Returns:

masked version of the text

Throws:

Exception - if there is a problem with the cryptographic environment

encrypt

public static String encrypt(String text,
                             char[] key,
                             byte[] salt)
                      throws Exception

Masks the supplied text using the key and salt bytes

Parameters:

text - string to be masked

key - character phrase used to mask the text

salt - bytes used to initialize the cryptographic environment

Returns:

masked version of the text

Throws:

Exception - if there is a problem with the cryptographic environment

main

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

Throws:

Exception