[MacTUG] OS X password length limit... not eight characters?

[Ian Turner]

and in the Open Directory Admin Manual for 10.6 (interesting, but of 
course not totally relevant because we authenticate from AD not OD


The password must contain no more than 512 bytes (512 characters or 
fewer, depending on the language), although the network authentication 
protocol can impose different limits (for example, 128 characters for 
NTLMv2 and NTLM and 14 for LAN Manager). “Composing a Password” on page 
105 provides guidelines for choosing passwords.


******
thankfully, LAN Manager is now abolished here, I believe

On 2010/12/14 08:37 , Ian Turner wrote:
> from a "man passwd " in Snow Leopard
>
> The passwd utility changes the user's password.  If the user is not the
> super-user, passwd first prompts for the current password and
>        will not continue unless the correct password is entered.
>
>        When entering the new password, the characters entered do not
> echo, in order to avoid the password being seen by a passer-by.  The
>        passwd utility prompts for the new password twice in order to
> detect typing errors.
>
>        The new password should be at least six characters long and not
> purely alphabetic.  Its total length should be less than _PASSWORD_LEN
>        (currently 128 characters), although some directory systems allow
> longer passwords.  Numbers, upper case letters, and meta characters
>        are encouraged.
>
>
> On 2010/12/13 16:40 , Daniel Allen wrote:
>> Googling "OS X password length" finds me the only official Apple
>> support document that seems to mention password length:
>>
>> Mac OS X: Effective Password Length of Eight Characters
>> http://support.apple.com/kb/TA20725
>>
>> Is there an effective limit? We're updating our password-changing
>> process, and our Active Directory seems to accept 75+ character
>> passwords without a problem. Preliminary checks seem to suggest the
>> macs are fine with 90-character passwords, but I haven't tested many
>> of the uses (eg, keychain).
>>
>> I'd mostly like to rule out some weird circumstance where the limit
>> was still 8 characters (Leopard onward).
>>
>> Thanks,
>> -Daniel
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