My Various Random Ramblings

[NEW VERSION - jPPP on Google Code]

Updated version of my java implementation of PPP.

• Fixed output to match Steve Gibson’s PPP.exe Version 3.0
• Changed internal workings to base calculation upon the total offset
• Allow operations by offset or card, column, row
• Cleaned up in general

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Class PPPengine

java.lang.Object
  PPPengine

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public class PPPengine
extends java.lang.Object

Main class for PPP password calculations.

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Constructor Summary
PPPengine(java.lang.String sequenceKeyIn)           Initiates the PPP card object.
PPPengine(java.lang.String sequenceKeyIn, int cardNumberIn, int columnIn, int rowIn)
PPPengine(java.lang.String sequenceKeyIn, long offsetIn)

 

Method Summary
void	advanceOffset()           Advances the current object to the next passcode.
static java.lang.String	findSequenceKey(java.lang.String passphrase)           Creates 64-bit sequence key from passphrase using SHA-256.
int[]	getAddress()           Returns current card, column, and row in an array
long	getOffset()           Returns the passcode offset
java.lang.String	makePasscode()           Generates the passcode for the current object’s state.
static void	setAlphabet(java.lang.String alphabetIn)           Sets the character set used by the engine.
static void	setLength(int lengthIn)           Sets the passcode length used by the system.
void	setOffset(int cardIn, int columnIn, int rowIn)           Set the offset for the current instance using the code address
void	setOffset(long offsetIn)           Set the offset

 

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Constructor Detail

PPPengine

public PPPengine(java.lang.String sequenceKeyIn)

Initiates the PPP card object. Use this to create a virtual replacement for a set printed PPP cards.

Parameters:

sequenceKeyIn – 64 Character key used to generate card

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PPPengine

public PPPengine(java.lang.String sequenceKeyIn,
                 int cardNumberIn,
                 int columnIn,
                 int rowIn)

Parameters:

sequenceKeyIn – 64 Character key used to generate card

cardNumberIn – Starting PPP card

columnIn – Starting column

rowIn – Starting row

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PPPengine

public PPPengine(java.lang.String sequenceKeyIn,
                 long offsetIn)

Parameters:

offsetIn – Long passcode offset

sequenceKeyIn – 64 Character key used to generate card

Method Detail

findSequenceKey

public static java.lang.String findSequenceKey(java.lang.String passphrase)

Creates 64-bit sequence key from passphrase using SHA-256.

Parameters:

passphrase – String passphrase to be converted

Returns:

String 64-bit sequence key

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setAlphabet

public static void setAlphabet(java.lang.String alphabetIn)

Sets the character set used by the engine.

Parameters:

alphabetIn – String of characters

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setLength

public static void setLength(int lengthIn)

Sets the passcode length used by the system.

Parameters:

lengthIn – Number of characters in final passcode

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advanceOffset

public void advanceOffset()

Advances the current object to the next passcode.

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getOffset

public long getOffset()

Returns the passcode offset

Returns:

passcode offset

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setOffset

public void setOffset(int cardIn,
                      int columnIn,
                      int rowIn)

Set the offset for the current instance using the code address

Parameters:

cardIn –

columnIn –

rowIn –

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setOffset

public void setOffset(long offsetIn)

Set the offset

Parameters:

offsetIn – Long

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getAddress

public int[] getAddress()

Returns current card, column, and row in an array

Returns:

address int[3]

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makePasscode

public java.lang.String makePasscode()

Generates the passcode for the current object’s state.

Returns:

String of length characters that is the passcode.

Throws:

java.lang.IllegalArgumentException