com.articulate.sigma

Class PasswordService

java.lang.Object

com.articulate.sigma.PasswordService

public final class PasswordService
extends java.lang.Object

A class that encrypts a string and checks it against another stored encrypted string, in order to validate a user login.

Field Summary

Fields

Modifier and Type	Field and Description
protected static java.lang.String	ADMIN_ROLE
protected static java.lang.String	USER_ROLE

Method Summary

Modifier and Type	Method and Description
void	addUser(User user)
java.lang.String	encrypt(java.lang.String plaintext) Encrypts a string with a deterministic algorithm.
static PasswordService	getInstance()
User	getUser(java.lang.String username)
protected User	getUserFromNamePassword64(java.lang.String namepass64)
java.io.File	getUsersFileDirectory()
protected boolean	isUserAuthenticated(java.lang.String usernamePassword64) Accepts as input a base 64 String consisting of a user name and password.
static void	main(java.lang.String[] args)
void	setUsersFileDirectory(java.io.File dir)
protected java.util.ArrayList<java.lang.String>	toNamePasswordPairFrom64(java.lang.String usernamePassword64) Accepts as input a base 64 String consisting of a user name and password.
void	updateUser(User user)
boolean	userExists(java.lang.String username)
protected void	writeUserFile()

Methods inherited from class java.lang.Object

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

Field Detail

ADMIN_ROLE

protected static final java.lang.String ADMIN_ROLE

See Also:

Constant Field Values

USER_ROLE

protected static final java.lang.String USER_ROLE

See Also:

Constant Field Values

Method Detail

encrypt

public java.lang.String encrypt(java.lang.String plaintext)

Encrypts a string with a deterministic algorithm.

getInstance

public static PasswordService getInstance()

setUsersFileDirectory

public void setUsersFileDirectory(java.io.File dir)

getUsersFileDirectory

public java.io.File getUsersFileDirectory()

isUserAuthenticated

protected boolean isUserAuthenticated(java.lang.String usernamePassword64)

Accepts as input a base 64 String consisting of a user name and password. Returns true if the user can be authenticated, else returns false.

Parameters:

String - A concatenated user name and password in base 64 representation

Returns:

True if the user can be authenticated, else false

toNamePasswordPairFrom64

protected java.util.ArrayList<java.lang.String> toNamePasswordPairFrom64(java.lang.String usernamePassword64)

Accepts as input a base 64 String consisting of a user name and password. Breaks and decodes the input String, if possible, and returns a List containing a user name String and an encrypted password String.

Parameters:

usernamePassword64 - A base 64 encoded String consisting of a user name and an encrypted password

Returns:

A two-element List consisting of a user name and an encrypted password. Both the user name and the encrypted password could be empty Strings if decoding of the input String fails.

getUser

public User getUser(java.lang.String username)

getUserFromNamePassword64

protected User getUserFromNamePassword64(java.lang.String namepass64)

writeUserFile

protected void writeUserFile()

userExists

public boolean userExists(java.lang.String username)

updateUser

public void updateUser(User user)

addUser

public void addUser(User user)

main

public static void main(java.lang.String[] args)