Package sk.iway.iwcm.users.crypto

Class Sha512

java.lang.Object

sk.iway.iwcm.users.crypto.Sha512

All Implemented Interfaces:

PasswordSecurityAlgorithm

public class Sha512
extends Object
implements PasswordSecurityAlgorithm

Hashovanie hesiel pomocou Sha-512 algoritmu

Constructor Summary

Constructors

Constructor	Description
Sha512()

Method Summary

Modifier and Type	Method	Description
String	calculateHash(String password, String salt)	Generates a hash combining password and a salt using concatenation.
String	generateSalt()	Generates a random HEX string chars = [0-9a-f]{16}, lowercase only
boolean	isPasswordCorrect(String password, String salt, String hash)

Methods inherited from class java.lang.Object

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

Constructor Details

Sha512

public Sha512()

Method Details

generateSalt

public String generateSalt()

Generates a random HEX string chars = [0-9a-f]{16}, lowercase only

Specified by:

generateSalt in interface PasswordSecurityAlgorithm

Returns:

String random hex string

calculateHash

public String calculateHash(String password,
 String salt)

Generates a hash combining password and a salt using concatenation. Algorithm employed: SHA-512

Specified by:

calculateHash in interface PasswordSecurityAlgorithm

Parameters:

password - any String

salt - Generated by generateSalt, must match ^[0-9a-f]{16}$, otherwise rejected

Returns:

[0-9a-f]{128} String

isPasswordCorrect

public boolean isPasswordCorrect(String password,
 String salt,
 String hash)

Specified by:

isPasswordCorrect in interface PasswordSecurityAlgorithm