Package hu.icellmobilsoft.coffee.tool.utils.crypto

Class SecretKeyUtil

java.lang.Object

hu.icellmobilsoft.coffee.tool.utils.crypto.SecretKeyUtil

public class SecretKeyUtil
extends Object

Cryptography key handling util

Since:

2.5.0

Author:

imre.scheffer

Field Summary

Fields

Modifier and Type	Field	Description
static String	ALGORITHM_AES	AES value
static int	ITERATION	Default iteration
static int	KEY_LENGTH	Encoded velua length
static byte[]	SALT	Default salt
static String	SECRET_KEY_ALGORITHM	Secret key algorithm

Method Summary

Modifier and Type	Method	Description
static SecretKeySpec	AES256SecretKeySpec(char[] password, byte[] salt, int iteration, int keyLength, String secretKeyFactoryAlgorithm, String secretKeySpecAlgorithm)	Create secret key
static SecretKeySpec	defaultAES256SecretKeySpec(char[] password)	Create secret key, where the following values are set: SALT: { 0 } ITERATION: 1000 KEY_LENGTH: 256 SECRET_KEY_ALGORITHM: "PBKDF2WithHmacSHA1" ALGORITHM_AES: "AES"

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

Default salt

ITERATION

public static final int ITERATION

Default iteration

See Also:

Constant Field Values

KEY_LENGTH

public static final int KEY_LENGTH

Encoded velua length

See Also:

Constant Field Values

SECRET_KEY_ALGORITHM

public static final String SECRET_KEY_ALGORITHM

Secret key algorithm

See Also:

Constant Field Values

ALGORITHM_AES

public static final String ALGORITHM_AES

AES value

See Also:

Constant Field Values

Method Detail

defaultAES256SecretKeySpec

public static SecretKeySpec defaultAES256SecretKeySpec(char[] password)
                                                throws hu.icellmobilsoft.coffee.dto.exception.BaseException

Create secret key, where the following values are set:

• SALT: { 0 }
• ITERATION: 1000
• KEY_LENGTH: 256
• SECRET_KEY_ALGORITHM: "PBKDF2WithHmacSHA1"
• ALGORITHM_AES: "AES"

Parameters:

password - string to encode

Returns:

SecretKeySpec

Throws:

hu.icellmobilsoft.coffee.dto.exception.BaseException - any exception

AES256SecretKeySpec

public static SecretKeySpec AES256SecretKeySpec(char[] password,
                                                byte[] salt,
                                                int iteration,
                                                int keyLength,
                                                String secretKeyFactoryAlgorithm,
                                                String secretKeySpecAlgorithm)
                                         throws hu.icellmobilsoft.coffee.dto.exception.BaseException

Create secret key

Parameters:

password - string to encode

salt - salt source

iteration - iteration count

keyLength - he to-be-derived key length

secretKeyFactoryAlgorithm - the standard name of the requested secret-key algorithm

secretKeySpecAlgorithm - the name of the secret-key algorithm to be associated with the given key material.

Returns:

secret key from the given byte array

Throws:

hu.icellmobilsoft.coffee.dto.exception.BaseException - any exception