Package com.easydesk.crypto.provider

Class HmacCrypt

java.lang.Object

com.easydesk.crypto.provider.CleanCrypt

com.easydesk.crypto.provider.HmacCrypt

All Implemented Interfaces:

CryptoAlgorithm

public class HmacCrypt
extends CleanCrypt

Implements the normal java PBKDF2WithHmacSHA1 stream cipers.

Constructor Summary

Constructors

Constructor	Description
HmacCrypt()	Creates a new HmacCrypt object.

Method Summary

Modifier and Type	Method	Description
byte[]	decrypt(char[] value, byte[] salt, int iteration)
byte[]	encrypt(byte[] value, byte[] salt, int iteration)	encrypt the supplied string with the requested cipher
byte[]	encrypt(char[] chars, byte[] salt, int iteration)	encrypt the supplied string with the requested cipher
boolean	isValid(char[] test, String stored)	(non-Javadoc)
void	setCipher(String cipher)	Setting the actual cipher requested.
void	setKeyLength(int length)	64 * length value of key

Methods inherited from class com.easydesk.crypto.provider.CleanCrypt

decrypt, encrypt, encrytedFullPassword, getIteration, getKey, getRandom, getSalt, isHex, isValid, isValid, setSaltSize, setSeed, toBytes, toChars

Methods inherited from class java.lang.Object

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

Constructor Details

HmacCrypt

public HmacCrypt()

Creates a new HmacCrypt object.

Method Details

setCipher

public void setCipher(String cipher)

Setting the actual cipher requested. If not called, then the default cipher (SHA-512) is used.

Specified by:

setCipher in interface CryptoAlgorithm

Overrides:

setCipher in class CleanCrypt

Parameters:

cipher - The cipher to use.

setKeyLength

public void setKeyLength(int length)

64 * length value of key

Specified by:

setKeyLength in interface CryptoAlgorithm

Overrides:

setKeyLength in class CleanCrypt

Parameters:

length -

encrypt

public byte[] encrypt(byte[] value,
 byte[] salt,
 int iteration)
               throws GeneralSecurityException

encrypt the supplied string with the requested cipher

Specified by:

encrypt in interface CryptoAlgorithm

Overrides:

encrypt in class CleanCrypt

Parameters:

value - The value to be encrypted

salt - can not be null

iteration - ignored

Returns:

The encrypted value

Throws:

Exception - An Exception of the underlying implementation.

GeneralSecurityException - various errors from the underlying ciphers.

encrypt

public byte[] encrypt(char[] chars,
 byte[] salt,
 int iteration)
               throws GeneralSecurityException

encrypt the supplied string with the requested cipher

Specified by:

encrypt in interface CryptoAlgorithm

Overrides:

encrypt in class CleanCrypt

Parameters:

chars - The value to be encrypted

salt - can not be null

iteration - ignored

Returns:

The encrypted value

Throws:

Exception - An Exception of the underlying implementation.

GeneralSecurityException - various errors from the underlying ciphers.

decrypt

public byte[] decrypt(char[] value,
 byte[] salt,
 int iteration)
               throws GeneralSecurityException

Specified by:

decrypt in interface CryptoAlgorithm

Overrides:

decrypt in class CleanCrypt

Parameters:

value -

salt -

iteration -

Returns:

Throws:

GeneralSecurityException

isValid

public boolean isValid(char[] test,
 String stored)
                throws GeneralSecurityException

Description copied from class: CleanCrypt

(non-Javadoc)

Specified by:

isValid in interface CryptoAlgorithm

Overrides:

isValid in class CleanCrypt

Parameters:

test - the value to be tested

stored - iteration + ":" + salt + ":" + digested

Returns:

Throws:

GeneralSecurityException

See Also:

• CleanCrypt.isValid(char[], java.lang.String)