asked on

Auto Password script

Hi,
I'm looking to create an automatic way that will create a password using a script to output it in a message box and copy it to the clipboard.

The password must:
"Be at least 8 positions in length but up to 10.
"Contain at least one English letter and one digit character
"Should not contain a digit character in the first and last position!(0-9)
"Should not contain identical consecutive characters (aa, ##, 88.)
"Should not contain consecutive keyboard characters (qwer)

For Example:

Correct password will be C0mputer
(8 letters, starts and ends with an English letter)

Incorrect password - Monitor1
(ends with a digit character)

Incorrect password - monitor
(there is no digit character, less than 8 positions in length.)

johnnyjonathan

ASKER

Forgot, also it cannot containt the word "help" or "desk"

RobSampson

>> "Should not contain consecutive keyboard characters (qwer)

This one's going to be just about impossible. If that were a strict rule,
C0mputer

would not valid either because e and r are consecutive on the keyboard.

Check this article out for validating a password:
http://www.microsoft.com/technet/scriptcenter/funzone/games/solutions08/avbsol05.mspx

Regards,

Rob.

johnnyjonathan

ASKER

your right, maybe i'm getting too strict :)
anyway without this rule ?

RobSampson

Yeah, the rest should be doable.....do you want to validate a user-inputted password, or do want a password automatically created? The latter will be more difficult, but I have an idea of how to do it....

Regards,

Rob.

johnnyjonathan

ASKER

I'm looking for the latter, just a one click script that can auto generate the password according to the rules mentioned before.

RobSampson

OK, finally got there.

Give this a shot.

Regards,

Rob.

' Basis from here:
'http://www.microsoft.com/technet/scriptcenter/funzone/games/solutions08/avbsol05.mspx
' Question link:
'http://www.experts-exchange.com/Programming/Languages/Visual_Basic/VB_Script/Q_24276924.html
'
' Password rules:
' The password must: 
' "Be at least 8 positions in length but up to 10.
' "Contain at least one English letter and one digit character
' "Should not contain a digit character in the first and last position!(0-9)
' OMITTED: "Should not contain identical consecutive characters (aa, ##, 88.)
' The last rule was omitted due to the complexity of it.
 
Const MinLength = 8
Const MaxLength = 10
 
While ValidatePassword(strPassword) = False
	strPassword = GeneratePassword
Wend
MsgBox strPassword
 
Function GeneratePassword()
 
	strRndPwd = ""
	
	If MinLength = "" Or MaxLength = "" Then
		WScript.Echo "Min and max lengths are not defined. Please set MinLength and MaxLength globally."
		Exit Function
	End If
	
	Randomize
	intLength = Int((MaxLength - MinLength + 1) * Rnd + MinLength)
 
	Const AsciiLower = 32
	Const AsciiUpper = 126
 
	While Len(strRndPwd) <= intLength
		'Randomize
		strChr = Chr(Int((AsciiUpper - AsciiLower + 1) * Rnd + AsciiLower))
		strRndPwd = strRndPwd & strChr
	Wend
 
	GeneratePassword = strRndPwd
End Function
 
Function ValidatePassword(strValPwd)
	Set objRegEx = CreateObject("VBScript.RegExp")
	boolValid = True
	' Check the length requirement
	If Len(strValPwd) < MinLength Or Len(strValPwd) > MaxLength Then boolValid = False
	' Look for an english character
	If boolValid = True Then
		objRegEx.Pattern = "[a-z][A-Z]"
		Set colMatches = objRegEx.Execute(strValPwd)  
		If colMatches.Count = 0 Then boolValid = False
	End If
	' Look for a digit
	If boolValid = True Then
		objRegEx.Pattern = "[0-9]"
		Set colMatches = objRegEx.Execute(strValPwd)  
		If colMatches.Count = 0 Then boolValid = False
	End If
	' Look for a digit in the first or last position
	If boolValid = True Then
		strFirstChr = Left(strValPwd, 1)
		strLastChr = Right(strValPwd, 1)
		If IsNumeric(strFirstChr) Or IsNumeric(strLastChr) Then boolValid = False
	End If
	ValidatePassword = boolValid
End Function

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johnnyjonathan

ASKER

it works great.
one note though, can you please let me know how i can turn off the special characters addition, and the CAPS letters in ABC, to make sure it will stay coordinated with future policy?

johnnyjonathan

ASKER

Also, sorry i forgot this, but it must start and end with a letter is there an option to set it?

RobSampson

OK, so by omitting special characters, do you basically want only lowercase letters, and digits available for use? The ASCII table can be found here:
http://asciitable.com/

I can make the password only include characters from decimal codes 48 through 57 for digits, and 97 through 122 for lowercase letters.

Regards,

Rob.

johnnyjonathan

ASKER

That's correct, however like i said, it must start and end with a letter as well.

ASKER CERTIFIED SOLUTION

RobSampson

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johnnyjonathan

ASKER

Works great! thank you

johnnyjonathan

ASKER

Works like a charm, tell me please, for the future, is there an option i can block specific words from appearing even by random?

RobSampson

Yeah sure, if you make your Validate_Password like this, it will invalidate any passwords that match words in the array.

Regards,

Rob.

Function ValidatePassword(strValPwd)
	Set objRegEx = CreateObject("VBScript.RegExp")
	boolValid = True
	' Check the length requirement
	If Len(strValPwd) < MinLength Or Len(strValPwd) > MaxLength Then boolValid = False
	' Look for an english character
	If boolValid = True Then
		objRegEx.Pattern = "[a-z]"
		Set colMatches = objRegEx.Execute(strValPwd)  
		If colMatches.Count = 0 Then boolValid = False
	End If
	' Look for a digit
	If boolValid = True Then
		objRegEx.Pattern = "[0-9]"
		Set colMatches = objRegEx.Execute(strValPwd)  
		If colMatches.Count = 0 Then boolValid = False
	End If
	' Look for a digit in the first or last position
	If boolValid = True Then
		strFirstChr = Left(strValPwd, 1)
		strLastChr = Right(strValPwd, 1)
		If IsNumeric(strFirstChr) Or IsNumeric(strLastChr) Then boolValid = False
	End If
	' Prevent specific words from being the password
	Set objDict = CreateObject("Scripting.Dictionary")
	objDict.Add "password", 0
	objDict.Add "workman", 0
	objDict.Add "hospital", 0
	If objDict.Exists(strValPwd) = True the boolValid = False
	' Return the valid code
	ValidatePassword = boolValid
End Function

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johnnyjonathan

ASKER

great, understood.

RobSampson

Although.....that won't actually stop passwords like
hospital1a

so, I've now changed it to an InStr match, so the word can *not* be anywhere in the whole password.

Regards,

Rob.

Function ValidatePassword(strValPwd)
	Set objRegEx = CreateObject("VBScript.RegExp")
	boolValid = True
	' Check the length requirement
	If Len(strValPwd) < MinLength Or Len(strValPwd) > MaxLength Then boolValid = False
	' Look for an english character
	If boolValid = True Then
		objRegEx.Pattern = "[a-z]"
		Set colMatches = objRegEx.Execute(strValPwd)  
		If colMatches.Count = 0 Then boolValid = False
	End If
	' Look for a digit
	If boolValid = True Then
		objRegEx.Pattern = "[0-9]"
		Set colMatches = objRegEx.Execute(strValPwd)  
		If colMatches.Count = 0 Then boolValid = False
	End If
	' Look for a digit in the first or last position
	If boolValid = True Then
		strFirstChr = Left(strValPwd, 1)
		strLastChr = Right(strValPwd, 1)
		If IsNumeric(strFirstChr) Or IsNumeric(strLastChr) Then boolValid = False
	End If
	' Prevent specific words from being the password
	arrWords = Array( _
		"help", _
		"desk", _
		"hospital" _
	)
	For Each strWord In arrWords
		If InStr(strValPwd, strWord) > 0 Then boolValid = False
	Next
	' Return the valid code
	ValidatePassword = boolValid
End Function

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johnnyjonathan

ASKER

Thank you Rob,
any way i can export the password to the clipbrd as well ?

RobSampson

Yeah sure, this should work.

Regards,

Rob.

' Basis from here:
'http://www.microsoft.com/technet/scriptcenter/funzone/games/solutions08/avbsol05.mspx
' Question link:
'http://www.experts-exchange.com/Programming/Languages/Visual_Basic/VB_Script/Q_24276924.html
'
' Password rules:
' The password must: 
' "Be at least 8 positions in length but up to 10.
' "Contain at least one English letter and one digit character
' "Should not contain a digit character in the first and last position!(0-9)
' "No special characters - lower case letters and digits only
' "Must begin and end with a letter
' OMITTED: "Should not contain identical consecutive characters (aa, ##, 88.)
' The last rule was omitted due to the complexity of it.
 
Const MinLength = 8
Const MaxLength = 10
 
While ValidatePassword(strPassword) = False
	strPassword = GeneratePassword
Wend
 
CopyToClipboard strPassword
 
MsgBox strPassword & " has been copied to the clipboard."
 
Function GeneratePassword()
 
	strRndPwd = ""
	
	If MinLength = "" Or MaxLength = "" Then
		WScript.Echo "Min and max lengths are not defined. Please set MinLength and MaxLength globally."
		Exit Function
	End If
	
	Randomize
	intLength = Int((MaxLength - MinLength + 1) * Rnd + MinLength)
 
	Const AsciiLower = 32
	Const AsciiUpper = 126
 
	While Len(strRndPwd) <= intLength
		'Randomize
		strChr = Chr(Int((AsciiUpper - AsciiLower + 1) * Rnd + AsciiLower))
		If (Asc(strChr) >= 48 And Asc(strChr) <= 57) Or (Asc(strChr) >= 97 And Asc(strChr) <= 122) Then strRndPwd = strRndPwd & strChr
	Wend
 
	GeneratePassword = strRndPwd
End Function
 
Function ValidatePassword(strValPwd)
	Set objRegEx = CreateObject("VBScript.RegExp")
	boolValid = True
	' Check the length requirement
	If Len(strValPwd) < MinLength Or Len(strValPwd) > MaxLength Then boolValid = False
	' Look for an english character
	If boolValid = True Then
		objRegEx.Pattern = "[a-z]"
		Set colMatches = objRegEx.Execute(strValPwd)  
		If colMatches.Count = 0 Then boolValid = False
	End If
	' Look for a digit
	If boolValid = True Then
		objRegEx.Pattern = "[0-9]"
		Set colMatches = objRegEx.Execute(strValPwd)  
		If colMatches.Count = 0 Then boolValid = False
	End If
	' Look for a digit in the first or last position
	If boolValid = True Then
		strFirstChr = Left(strValPwd, 1)
		strLastChr = Right(strValPwd, 1)
		If IsNumeric(strFirstChr) Or IsNumeric(strLastChr) Then boolValid = False
	End If
	' Prevent specific words from being the password
	arrWords = Array( _
		"help", _
		"desk", _
		"hospital" _
	)
	For Each strWord In arrWords
		If InStr(strValPwd, strWord) > 0 Then boolValid = False
	Next
	' Return the valid code
	ValidatePassword = boolValid
End Function
 
Sub CopyToClipboard(strTextForClipboard)
	Set objIE = CreateObject("InternetExplorer.Application")
	objIE.Navigate("about:blank")
	objIE.document.parentwindow.clipboardData.SetData "text", strTextForClipboard
	objIE.Quit
End Sub

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