Skip to main content

A strong password generator program with source code

In my previous post https://steemit.com/programming/@royalmacro/a-free-open-source-data-encryption-program-for-steemit-users I share a data encrypton tool with source code, now, today here I share another program, a strong password generator with source code.
This program will generate strong, hard-to-guess passwords. I’ll do it by hashing together “domain name”, “login/user id” & “a secure master key”.
If you use the same secure master key for every password generations then you do not need to write down or, memorize your generated passwords. When you need your password then repeat the same procedure to re-generate it. If your “domain name”, “login/user id” & “a secure master key” are not different then you will generate the same password.
If you use only one secure master key then you have to only memorize your master key, not the passwords.
Lets try it !
Step by Step Development :
Open a new project in Visual Basic 8. Select “Standard EXE”.


Create 5 text boxes & one command button. Text1 textbox, Text2 textbox, Text3 textbox, Text4 textbox, Text5 textbox & Command1 commandbutton.
enter image description here
Add 5 Labels with captions “domain name”, “login/user id”, “secure master key”, “strong password” & “normal password”. And change the caption of the Command1 commandbutton to “Generate”. Add the passwordchar “*” to the Text3 textbox “password char” properties.
enter image description here
Add a module “Module 1” to the project
enter image description here
Add this following codes to the module “Module 1” :
enter image description here
Option Explicit

Public Function CryptRC4(sText As String, sKey As String) As String
Dim baS(0 To 255) As Byte
Dim baK(0 To 255) As Byte
Dim bytSwap     As Byte
Dim lI          As Long
Dim lJ          As Long
Dim lIdx        As Long

For lIdx = 0 To 255
    baS(lIdx) = lIdx
    baK(lIdx) = Asc(Mid$(sKey, 1 + (lIdx Mod Len(sKey)), 1))
Next
For lI = 0 To 255
    lJ = (lJ + baS(lI) + baK(lI)) Mod 256
    bytSwap = baS(lI)
    baS(lI) = baS(lJ)
    baS(lJ) = bytSwap
Next
lI = 0
lJ = 0
For lIdx = 1 To Len(sText)
    lI = (lI + 1) Mod 256
    lJ = (lJ + baS(lI)) Mod 256
    bytSwap = baS(lI)
    baS(lI) = baS(lJ)
    baS(lJ) = bytSwap
    CryptRC4 = CryptRC4 & Chr$((pvCryptXor(baS((CLng(baS(lI)) + baS(lJ)) Mod 256), Asc(Mid$(sText, lIdx, 1)))))
Next
End Function

Public Function pvCryptXor(ByVal lI As Long, ByVal lJ As Long) As Long
If lI = lJ Then
    pvCryptXor = lJ
Else
    pvCryptXor = lI Xor lJ
End If
End Function

Public Function ToHexDump(sText As String) As String
Dim lIdx            As Long

For lIdx = 1 To Len(sText)
    ToHexDump = ToHexDump & Right$("0" & Hex(Asc(Mid(sText, lIdx, 1))), 2)
Next
End Function

Public Function FromHexDump(sText As String) As String
Dim lIdx            As Long

For lIdx = 1 To Len(sText) Step 2
    FromHexDump = FromHexDump & Chr$(CLng("&H" & Mid(sText, lIdx, 2)))
Next
End Function
Input this following code to Form1 :
enter image description here
Private Sub Command1_Click()
Dim KEY As String
Dim Password As String
Dim str1, str2, str3, str4, laststr As String

If Me.Text1.Text = "" Then
MsgBox "Error - You have entered no domain!", vbCritical, "Error"
ElseIf Me.Text2.Text = "" Then
MsgBox "Error - You have entered no Login ID!", vbCritical, "Error"
ElseIf Me.Text3.Text = "" Then
MsgBox "Error - You have entered no master key!", vbCritical, "Error"
ElseIf Len(Me.Text3.Text) < 3 Then
MsgBox "Error - You have entered too short Master Key. Please, enter at least 3 characters!", vbCritical, "Error"
Else

KEY = LCase(Me.Text1.Text) + LCase(Me.Text2.Text)

Password = ToHexDump(CryptRC4(Me.Text3.Text, KEY))
If Len(Password) > 18 Then
Password = Mid$(Password, 1, 18)
End If

str1 = Mid$(Password, 1, 1)
str2 = Mid$(Password, 2, 1)
str3 = Mid$(Password, 3, 1)
str4 = Mid$(Password, 4, 1)
laststr = Mid$(Password, 5, Len(Password) - 4)

If Len(Me.Text3.Text) = 3 Then

Me.Text4.Text = str1 + "S" + str2 + "^" + str3 + "7" + str4 + "l" + laststr
Me.Text5.Text = str1 + "t" + str2 + "3" + str3 + "I" + str4 + "0" + laststr

ElseIf Len(Me.Text3.Text) = 4 Then

Me.Text4.Text = str1 + "R" + str2 + "$" + str3 + "8" + str4 + "j" + laststr
Me.Text5.Text = str1 + "k" + str2 + "7" + str3 + "X" + str4 + "5" + laststr

ElseIf Len(Me.Text3.Text) = 5 Then

Me.Text4.Text = str1 + "E" + str2 + "%" + str3 + "6" + str4 + "g" + laststr
Me.Text5.Text = str1 + "d" + str2 + "2" + str3 + "U" + str4 + "4" + laststr

ElseIf Len(Me.Text3.Text) = 6 Then

Me.Text4.Text = str1 + "H" + str2 + "!" + str3 + "5" + str4 + "m" + laststr
Me.Text5.Text = str1 + "v" + str2 + "1" + str3 + "F" + str4 + "0" + laststr

ElseIf Len(Me.Text3.Text) = 7 Then

Me.Text4.Text = str1 + "J" + str2 + "~" + str3 + "6" + str4 + "c" + laststr
Me.Text5.Text = str1 + "w" + str2 + "7" + str3 + "Q" + str4 + "9" + laststr

ElseIf Len(Me.Text3.Text) = 8 Then

Me.Text4.Text = str1 + "Z" + str2 + "#" + str3 + "8" + str4 + "h" + laststr
Me.Text5.Text = str1 + "o" + str2 + "6" + str3 + "T" + str4 + "4" + laststr

ElseIf Len(Me.Text3.Text) = 9 Then

Me.Text4.Text = str1 + "Y" + str2 + "@" + str3 + "5" + str4 + "d" + laststr
Me.Text5.Text = str1 + "p" + str2 + "4" + str3 + "W" + str4 + "7" + laststr

ElseIf Len(Me.Text3.Text) = 10 Then

Me.Text4.Text = str1 + "Z" + str2 + "&" + str3 + "8" + str4 + "n" + laststr
Me.Text5.Text = str1 + "y" + str2 + "2" + str3 + "G" + str4 + "5" + laststr

ElseIf Len(Me.Text3.Text) = 11 Then

Me.Text4.Text = str1 + "B" + str2 + "*" + str3 + "3" + str4 + "j" + laststr
Me.Text5.Text = str1 + "f" + str2 + "0" + str3 + "V" + str4 + "7" + laststr

ElseIf Len(Me.Text3.Text) = 12 Then

Me.Text4.Text = str1 + "Q" + str2 + "(" + str3 + "6" + str4 + "e" + laststr
Me.Text5.Text = str1 + "r" + str2 + "5" + str3 + "W" + str4 + "9" + laststr

ElseIf Len(Me.Text3.Text) = 13 Then

Me.Text4.Text = str1 + "U" + str2 + ")" + str3 + "7" + str4 + "t" + laststr
Me.Text5.Text = str1 + "m" + str2 + "4" + str3 + "K" + str4 + "7" + laststr

ElseIf Len(Me.Text3.Text) = 14 Then

Me.Text4.Text = str1 + "O" + str2 + "-" + str3 + "2" + str4 + "l" + laststr
Me.Text5.Text = str1 + "w" + str2 + "6" + str3 + "I" + str4 + "4" + laststr

ElseIf Len(Me.Text3.Text) = 15 Then

Me.Text4.Text = str1 + "X" + str2 + "=" + str3 + "7" + str4 + "j" + laststr
Me.Text5.Text = str1 + "d" + str2 + "5" + str3 + "V" + str4 + "6" + laststr

ElseIf Len(Me.Text3.Text) = 16 Then

Me.Text4.Text = str1 + "C" + str2 + "+" + str3 + "6" + str4 + "n" + laststr
Me.Text5.Text = str1 + "m" + str2 + "9" + str3 + "J" + str4 + "8" + laststr

ElseIf Len(Me.Text3.Text) > 16 Then

Me.Text4.Text = str1 + "T" + str2 + "+" + str3 + "6" + str4 + "y" + laststr
Me.Text5.Text = str1 + "l" + str2 + "9" + str3 + "X" + str4 + "8" + laststr


End If
End If
End Sub
Make the exe file :
enter image description here
Completed ! Now run the exe file :
enter image description here
In this tutorial I use “gmail.com” as domain, “samplegmailaccount@gmail.com” as login/user id & “12345678” as my secure master key. And after pressing the “Generate” button I got two types of passwords – strong (0Z5#388h834926252CB6) & normal (0o563T84834926252CB6). Look strong type passwords has special characters & normal has not. Some websites don’t support any special characters as password. So, you can normal password there. If you change any fields of domain, login/user id & secure master key then this program will generate quite different password.
If you use only one secure master key to generate your passwords then you have to only memorize your master key, not the passwords. And you will generate different types of strong passwords for different websites or Login/User IDs.
Thank you :D

Tags : Open Source Project, Programming, Security, Software, Steemit, Visual Basic, 

This Post Was Published On My Steemit Blog. Please, navigate to steemit and cast a free upvote to help me if you like my post. First Time heard about Steemit ? Click Here To Know Everything About Steemit 



$3 Donation [Fixed]

$Any Amount





Comments

Popular Posts (Last 7 Days)

The Real Face Of India - Episode 133

The Real Face Of India - Episode#133 I believe that India is the most beautiful country in the world. In this series I show the real face of beautiful India. Half Dozen Photos of Natural Beauties Snap taken : 21 Mar 2018   Camera : SAMSUNG, Model : SM-A310N0 Other Episodes :  Episode#01 ,  Episode#02 ,  Episode#03 ,  Episode#04 ,  Episode#05 ,  Episode#06 ,  Episode#07 ,  Episode#08 ,  Episode#09 ,  Episode#10 ,  Episode#11 ,  Episode#12 ,  Episode#13 ,  Episode#14 ,  Episode#15 ,  Episode#16 ,  Episode#17 ,  Episode#18 ,  Episode#19 ,  Episode#20 ,  Episode#21 ,  Episode#22 ,  Episode#23 ,  Episode#24 ,  Episode#25 ,  Episode#26 ,  Episode#27 ,  Episode#28 ,  Episode#29 ,  Episode#30 ,  Episode#31 ,  Episode#32 ,  Episode#33 ,  Episode#34 ,  Episode#35 ,  Episode#36 ,  Episode#37 ,  Episode#38 ,  Episode#39 ,  Episode#40 ,  Episode#41 ,  Episode#42 ,  Episode#43 ,  Episode#44 ,  Episode#45 ,  Episode#46 ,  Episode#47 ,  Episode#48 ,  Episode#49 ,  Episode#50 , 

Untitled 3

Tags : Life, Photography, Flood, This Post Was Published On My Steemit Blog . Please, navigate to steemit and cast a free upvote to help me if you like my post. First Time heard about Steemit ? Click Here To Know Everything About Steemit  $3 Donation [Fixed] Donate $Any Amount

Earn Bitcoin by playing free fun games (non gambling)

To earn bitcoin by playing free games is very exciting. Here I give a list of all games I searched on Google. 1.  SatoshiQuiz  :SatoshiQuiz is a quiz website where users win bitcoin for correctly answering questions from various categories.. You can earn 100 to 1000 satoshi per winning quiz.  Try the new android app and get 5000 satoshis.  Download   Min withdrawal amount is 11000 satoshis & Processed once every week on Sunday.1000 satoshi fees deducted per withdrawal to prevent abuse. Premium account fees is 100000 satoshis per month.   2.  Bitcoin Riddles  :Solve riddles presented in YouTube videos and if you are the first to get the correct answer you win a prize in BTC! Minimum withdrawal is 100 bits. After signup you will get free 10 bits.  3.  Sparkprofit  : Spark Profit aims to be the world's most rewarding app! It teaches you how to profitably trade on the financial markets, and pays you cash rewards when you do well. Platform : Windows, Mac, Android &

Fine Arts Tips : How to Draw a Leopard With Pencil - by Leonardo Pereznieto

This video tutorial was made by Leonardo Pereznieto on youtube. For more tutorials please, visit :   https://www.youtube.com/channel/UCaapxaQKJFJ6XC56CHgeTzw Visit his more works on : Facebook :  https://www.facebook.com/LeonardoPereznieto Website:  http://www.ArtistLeonardo.com/         How to Draw a Leopard With Pencil - Big Cat     Thanks :D Tags : Art, Drawing, Tutorials, Video, Youtube, Sketch,  This Post Was Published On My Steemit Blog . Please, navigate to steemit and cast a free upvote to help me if you like my post. First Time heard about Steemit ? Click Here To Know Everything About Steemit  $3 Donation [Fixed] Donate $Any Amount

Steemit bug found in “TAG”

Steemit bug found in “TAG” image credit I just found a serious bug on steemit TAG. Today I published a news cum TIL post with 5 tags - wilt news newslink til steemitnews https://steemit.com/wilt/@royalmacro/what-i-learnt-today-darkweb-raises-funds-for-assassinating-both-donald-trump-and-mike-pence But, my post is visible in only one section in “wilt”. Other tags are not working anymore. I searched frequently in the following sections which I tagged – https://steemit.com/created/news https://steemit.com/created/newslink https://steemit.com/created/til https://steemit.com/created/steemitnews My post is invisible in the above sections. It’s only visible in - https://steemit.com/created/wilt Update : I just found a solution. I used 4 tags instead of 5. Now, my post is visible to all 4 sections. Tags : Blockchain, Bugs, Cryptocurrency, Steemit,  This Post Was Published On My Steemit Blog . Please, navigate to steemit and cast a free upvote to hel

One Black & White Photograph Daily for 30 days - Day #25

green yard - behind of my village home Camera : Xiaomi Model : 2014818 Location : Bongaon, West Bengal, India Snap Taken : 14 March 2016 Tags : Black & White Photography, Flowers & Plants photography, Landscape photography, Nature, Photography,  This Post Was Published On My Steemit Blog . Please, navigate to steemit and cast a free upvote to help me if you like my post. First Time heard about Steemit ? Click Here To Know Everything About Steemit  $3 Donation [Fixed] Donate $Any Amount

mathematics behind chess

Is there any relationship between supposing numerically and supposing in the round of Chess? At the end of the day, should a man having a dynamic personality in Mathematics turned out to be essentially a decent Chess player have aptitudes in Mathematics?  It is important to call attention to that because of the subject intricacy, our endeavors will be to clarify essential attributes of both  Science and Chess which have been postured by surely understood Mathematicians and Chess players. In like manner, we are not keen on uncovering truths, for instance, from the Theory of Knowledge, Psychology, Epistemology or going further into the specialized and complex parts of Chess.  In the first place, let us analyze a few characteristics of Mathernatics.  Individuals having poor involvement in Mathematics trust that knowing how to include, subtract, increase or separation empowers them to say that they could ace Mathematics. Others having some aptitude in performing fa

Visiting deep inside the Sundarbans & spent days with Bawali - Episode #16

In the last October-November I visited Sundarbans, the world's one of the largest mangrove forest. It was also declared as world heritage site by UNESCO in 1997. In this forest a numerous wildlife species exist - birds, reptiles, fishes, amphibians and also the king of the forest "Royal Bengal Tiger". The ganges dolphins & crocodiles are also living in the canals of Sundarbans. Chital is a one kind of spotted deer living in this forest. The rural life in the area of this coastal forest is also very attractive. They basically maintain their lives by collecting honey, woods and fishes. In the native language they are called as Bawali. I spent some days with them. Here I share some of my tour photographs of Sundarbans and Bawali -- Kewra, one kind of mangrove tree grows in Sunderbans Main Mangrove trees in Sundarbans (from left)- Gewa (Excoecaria agallocha L.) , Kewra (Pandanus odoratissimus), Sundori (Heritiera littoralis) and Golpata (Nypa fruticans) Camera :

Yoga and Health

image credit ## Health  In its holistic approach health is defined as a state of complete physical, mental and social well-being. The spiritual perspective is regarded as important as others. So far so much efforts and importance are being given on physical aspects of health. Mental perspective is rarely explored and till late the spiritual soundness is applied to religion only. It is high time we give a balanced importance to physical, mental and spiritual aspects of healthy habits.     image credit ## Yoga  From time immemorial people regard physical exercise as one of the most important way to retain health and fitness. Yoga is a form of exercise that looks after the mental and spiritual health of the person also. Other forms of exercise like aerobics are concerned with the physical wellbeing only. Yoga is believed to elevate the life force - *Kundalini* at the base of the spine. image credit Yoga has –  * Physical Aspects – Consists of postures or *asanas* with

Crop field in my village home

Here I share 4 photographs of crop fields in my village home, India. Pic 1 Pic 2 Pic 3 Pic 4 Tags : Photography, Flowers & Plants photography, Nature, Travel, Landscape photography, Village, India This Post Was Published On My Steemit Blog . Please, navigate to steemit and cast a free upvote to help me if you like my post. First Time heard about Steemit ? Click Here To Know Everything About Steemit 
Back to Top