Module seppiko.commons.utils

Package org.seppiko.commons.utils.crypto

Class HashUtil

java.lang.Object

org.seppiko.commons.utils.crypto.HashUtil

public class HashUtil
extends Object

Hash Util

Author:

Leonard Woo

See Also:

• Java Security Standard Algorithm Names

Method Summary

Modifier and Type	Method	Description
static byte[]	hmacHash(HmacAlgorithms algorithm, Provider provider, byte[] data, byte[] key)	Simplifies common Mac tasks.
static String	hmacHashString(HmacAlgorithms algorithm, Provider provider, byte[] data, byte[] key)	Simplifies common Mac tasks.
static byte[]	mdHash(MessageDigestAlgorithms algorithm, Provider provider, byte[] data)	Simplifies common MessageDigest tasks.
static String	mdHashString(MessageDigestAlgorithms algorithm, Provider provider, byte[] data)	Simplifies common MessageDigest tasks.
static byte[]	pbkdf2Hash(HmacAlgorithms algorithm, Provider provider, char[] password, byte[] salt, int iterations, int keySize)	Simplifies common PBKDF2 tasks
static String	pbkdf2HashString(HmacAlgorithms algorithm, Provider provider, char[] password, byte[] salt, int iterations, int keySize)	Simplifies common PBKDF2 tasks

Methods inherited from class java.lang.Object

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

Method Details

mdHash

public static byte[] mdHash(MessageDigestAlgorithms algorithm,
 Provider provider,
 byte[] data)
                     throws IllegalArgumentException

Simplifies common MessageDigest tasks.

Parameters:

algorithm - Message Digest Algorithm

provider - Hash provider, null is use default provider

data - data to hash

Returns:

complete hash value

Throws:

IllegalArgumentException - when a NoSuchAlgorithmException is caught.

mdHashString

public static String mdHashString(MessageDigestAlgorithms algorithm,
 Provider provider,
 byte[] data)
                           throws IllegalArgumentException

Simplifies common MessageDigest tasks.

Parameters:

algorithm - Message Digest Algorithm

provider - Hash provider, null is use default provider

data - data to hash

Returns:

complete hash string

Throws:

IllegalArgumentException - when a NoSuchAlgorithmException is caught.

hmacHash

public static byte[] hmacHash(HmacAlgorithms algorithm,
 Provider provider,
 byte[] data,
 byte[] key)
                       throws InvalidKeyException,
IllegalArgumentException

Simplifies common Mac tasks.

Parameters:

algorithm - Hmac Algorithm

provider - Hash provider, null is use default provider

data - data to hash with key

key - the keyed digest

Returns:

complete hash value including key

Throws:

InvalidKeyException - if the given key is null or does not match the allowed pattern.

IllegalArgumentException - when a NoSuchAlgorithmException is caught.

hmacHashString

public static String hmacHashString(HmacAlgorithms algorithm,
 Provider provider,
 byte[] data,
 byte[] key)
                             throws InvalidKeyException,
IllegalArgumentException

Simplifies common Mac tasks.

Parameters:

algorithm - Hmac Algorithm

provider - Hash provider, null is use default provider

data - data to hash with key

key - the keyed digest

Returns:

complete hash string including key

Throws:

InvalidKeyException - if the given key is null or does not match the allowed pattern.

IllegalArgumentException - when a NoSuchAlgorithmException is caught.

pbkdf2Hash

public static byte[] pbkdf2Hash(HmacAlgorithms algorithm,
 Provider provider,
 char[] password,
 byte[] salt,
 int iterations,
 int keySize)
                         throws IllegalArgumentException

Simplifies common PBKDF2 tasks

Parameters:

algorithm - PBKDF2With<Hmac Algorithm>

provider - Hash provider, null is use default provider

password - raw password

salt - password salt

iterations - iteration

keySize - key size

Returns:

PBKDF2With<Hmac Algorithm> password

Throws:

IllegalArgumentException - password or salt is null, number is wrong or could not execute task.

pbkdf2HashString

public static String pbkdf2HashString(HmacAlgorithms algorithm,
 Provider provider,
 char[] password,
 byte[] salt,
 int iterations,
 int keySize)
                               throws IllegalArgumentException

Simplifies common PBKDF2 tasks

Parameters:

algorithm - PBKDF2With<Hmac Algorithm>

provider - Hash provider, null is use default provider

password - raw password

salt - password salt

iterations - iteration

keySize - key size

Returns:

PBKDF2With<Hmac Algorithm> password string

Throws:

IllegalArgumentException - password or salt is null, number is wrong or could not execute task.