de.alpharogroup.crypto.sha

Class Hasher

java.lang.Object

de.alpharogroup.crypto.sha.Hasher

public class Hasher
extends Object

The class Hasher.

Author:

Asterios Raptis

Constructor Summary

Constructors

Constructor and Description
Hasher()

Method Summary

Modifier and Type	Method and Description
static byte[]	getRandomSalt(int length, Charset charset) Gets the random salt.
static String	hash(String hashIt, String salt, de.alpharogroup.crypto.algorithm.HashAlgorithm hashAlgorithm, Charset charset) Hashes the given String object with the given parameters.
static String	hashAndBase64(String hashIt, String salt, de.alpharogroup.crypto.algorithm.HashAlgorithm hashAlgorithm, Charset charset) Hashes and encodes it with base64 from the given String object with the given parameters.
static String	hashAndHex(String hashIt, String salt, de.alpharogroup.crypto.algorithm.HashAlgorithm hashAlgorithm, Charset charset) Hashes and hex it with the given String object with the given parameters.

Methods inherited from class java.lang.Object

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

Constructor Detail

Hasher

public Hasher()

Method Detail

getRandomSalt

public static byte[] getRandomSalt(int length,
                                   Charset charset)

Gets the random salt.

Parameters:

length - the length

charset - the charset

Returns:

the random salt

hash

public static String hash(String hashIt,
                          String salt,
                          de.alpharogroup.crypto.algorithm.HashAlgorithm hashAlgorithm,
                          Charset charset)
                   throws NoSuchAlgorithmException

Hashes the given String object with the given parameters.

Parameters:

hashIt - the hash it

salt - the salt

hashAlgorithm - the hash algorithm

charset - the charset

Returns:

the generated String object

Throws:

NoSuchAlgorithmException - is thrown if instantiation of the MessageDigest object fails.

hashAndBase64

public static String hashAndBase64(String hashIt,
                                   String salt,
                                   de.alpharogroup.crypto.algorithm.HashAlgorithm hashAlgorithm,
                                   Charset charset)
                            throws NoSuchAlgorithmException

Hashes and encodes it with base64 from the given String object with the given parameters.

Parameters:

hashIt - the hash it

salt - the salt

hashAlgorithm - the hash algorithm

charset - the charset

Returns:

the generated String object

Throws:

NoSuchAlgorithmException - is thrown if instantiation of the MessageDigest object fails.

hashAndHex

public static String hashAndHex(String hashIt,
                                String salt,
                                de.alpharogroup.crypto.algorithm.HashAlgorithm hashAlgorithm,
                                Charset charset)
                         throws NoSuchAlgorithmException,
                                InvalidKeyException,
                                UnsupportedEncodingException,
                                NoSuchPaddingException,
                                IllegalBlockSizeException,
                                BadPaddingException,
                                InvalidKeySpecException,
                                InvalidAlgorithmParameterException

Hashes and hex it with the given String object with the given parameters.

Parameters:

hashIt - the hash it

salt - the salt

hashAlgorithm - the hash algorithm

charset - the charset

Returns:

the generated String object

Throws:

NoSuchAlgorithmException - is thrown if instantiation of the MessageDigest object fails.

UnsupportedEncodingException - is thrown by get the byte array of the private key String object fails.

NoSuchPaddingException - is thrown if instantiation of the cypher object fails.

InvalidKeyException - the invalid key exception is thrown if initialization of the cypher object fails.

BadPaddingException - is thrown if Cipher.doFinal(byte[]) fails.

IllegalBlockSizeException - is thrown if Cipher.doFinal(byte[]) fails.

InvalidAlgorithmParameterException - is thrown if initialization of the cypher object fails.

InvalidKeySpecException - is thrown if generation of the SecretKey object fails.