RE: Whitespace in passwords

["dave kleiman" <dave () isecureu com>]

Craig,

Are you suggesting they have a Unicode/extend ASCII table hidden from use?

How about we try possibly forcing Unicode character:

if(strInList(szPwd,aBadWords))
    bComplex = FALSE;

if(cchPassword > 9){
    for(i = 0; i < cchPassword ; i++){
        if(szPwd[i] & C1_DIGIT) { dwNum = 1; continue; }
        if(szPwd[i] & C1_UPPER) { dwUpper = 1; continue; }
        if(szPwd[i] & C1_LOWER) { dwLower = 1; continue; }
        if(szPwd[i] & C1_SYMBOL) { dwSym = 1; continue}
        if(isUnicode(szPwd[i])) {dwUnicode = 1; continue}
}

if(bUserIsAdmin){ //Admins need better passwords than users
    if ((dwNum + dwUpper + dwLower + dwSym + dwUnicode == 5) &&
cchPassword>14)
        bComplex = TRUE;
}
else { //User is not an admin, use lower requirements
    if(dwNum + dwUpper + dwLower + dwSym + dwUnicode) >= 4)
        bComplex = TRUE;
}


I will see if I can find more info for you.


Dave

> -----Original Message-----
> From: Craig Wright [mailto:cwright () bdosyd com au]
> Sent: Sunday, September 18, 2005 16:55
> To: dave kleiman; pen-test () securityfocus com
> Cc: Anders Thulin; bryan allott; compuwar () gmail com; Peter Parker
> Subject: RE: Whitespace in passwords
>
> Please note I was pointing to the "success rates" table for NTLM
>
> The lowest is 80.19% as it stands. This is not all the tables
> are precomputed, but there is still an 80+ % crack rate (and
> this is growing)
>
> Further - this is not the only table source. Further - there
> is no manner in which you will enforce extended passwords. As
> I initially stated - the issue is in protecting the password
> and stopping a copy from being tested. There are means
> available to do this. If you are still on NT 4.0 - than it is
> time to upgrade.
>
> The success rate is 80.19% for "alpha numeric symbol 32
> space" - this is EVERYthing in NTLM - not just space or
> extended - the table is 53% derived- but if you read further
> - this equates to an 80.19% crack rate.
>
> Remember there is a user at the other end - they have to
> remember. Please explain how a user will enter and remember a
> passphrase such as "S%'beep'('Smiley face'?G$" - where ' '
> encloses extended chars
>
> Craig
>
>       -----Original Message----- 
>       From: dave kleiman [mailto:dave () isecureu com]
>       Sent: Mon 19/09/2005 5:49 AM
>       To: pen-test () securityfocus com
>       Cc: 'Anders Thulin'; 'bryan allott'; Craig Wright;
> compuwar () gmail com; 'Peter Parker'
>       Subject: RE: Whitespace in passwords



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