org.daveware.passwordmaker

Class PasswordMaker

java.lang.Object

org.daveware.passwordmaker.PasswordMaker

public class PasswordMaker
extends Object

This class is used to generate passwords from a master password and an account.

Author:

Dave Marotti

Constructor Summary

Constructors

Constructor and Description
PasswordMaker()

Method Summary

Modifier and Type	Method and Description
static double	calcPasswordStrength(SecureCharArray pw) Calculates the strength of a password.
SecureUTF8String	generateVerificationCode(SecureUTF8String masterPassword)
static String	getDefaultCryptoProvider()
String	getModifiedInputText(String inputText, Account account)
SecureUTF8String	makePassword(SecureUTF8String masterPassword, Account account) Generates a hash of the master password with settings from the account.
SecureUTF8String	makePassword(SecureUTF8String masterPassword, Account account, String inputText) Generates a hash of the master password with settings from the account.
SecureUTF8String	makePassword(SecureUTF8String masterPassword, Account account, String inputText, String username) Generates a hash of the master password with settings from the account.
SecureUTF8String	rstr2any(char[] input, String encoding, boolean trim) Maps an array of characters to another character set.
static void	setDefaultCryptoProvider(String provider)

Methods inherited from class java.lang.Object

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

Constructor Detail

PasswordMaker

public PasswordMaker()

Method Detail

setDefaultCryptoProvider

public static void setDefaultCryptoProvider(String provider)

getDefaultCryptoProvider

public static String getDefaultCryptoProvider()

calcPasswordStrength

public static double calcPasswordStrength(SecureCharArray pw)

Calculates the strength of a password.

Parameters:

pw - the password to calculate the strength

Returns:

An integer value from 0 to 100.

rstr2any

public SecureUTF8String rstr2any(char[] input,
                                 String encoding,
                                 boolean trim)
                          throws Exception

Maps an array of characters to another character set.

This is the magic which allows an encrypted password to be mapped into a a specific character set.

Parameters:

input - The array of characters to map.

encoding - The list of characters to map to.

trim - Whether to trim leading zeros ... I think.

Returns:

The mapped string.

Throws:

Exception - On odd length!?

getModifiedInputText

public final String getModifiedInputText(String inputText,
                                         Account account)

makePassword

public SecureUTF8String makePassword(SecureUTF8String masterPassword,
                                     Account account,
                                     String inputText,
                                     String username)
                              throws Exception

Generates a hash of the master password with settings from the account.

Parameters:

masterPassword - The password to use as a key for the various algorithms.

account - The account with the specific settings for the hash.

inputText - The text to use as the input into the password maker algorithm

username - The username to use for generating the password

Returns:

A SecureCharArray with the hashed data.

Throws:

Exception - if something bad happened.

makePassword

public SecureUTF8String makePassword(SecureUTF8String masterPassword,
                                     Account account,
                                     String inputText)
                              throws Exception

Generates a hash of the master password with settings from the account. It will use the username assigned to the account.

Parameters:

masterPassword - The password to use as a key for the various algorithms.

account - The account with the specific settings for the hash.

inputText - The text to use as the input into the password maker algorithm

Returns:

A SecureCharArray with the hashed data.

Throws:

Exception - if something bad happened.

makePassword

public SecureUTF8String makePassword(SecureUTF8String masterPassword,
                                     Account account)
                              throws Exception

Generates a hash of the master password with settings from the account.

Parameters:

masterPassword - The password to use as a key for the various algorithms.

account - The account with the specific settings for the hash. Uses account.getUrl() as the inputText

Returns:

A SecureCharArray with the hashed data.

Throws:

Exception - if something bad happened.

generateVerificationCode

public SecureUTF8String generateVerificationCode(SecureUTF8String masterPassword)
                                          throws Exception

Throws:

Exception