Not sure what "user identity" means in this context, but if you look  
again in hdiutil's man page you'll see a standard command line option  
"-uid" for passing a user id to own the root of the volume.

Daniel

On Jan 19, 2006, at 1:17 PM, Chuck Pelto wrote:

> What if I want to pass both a user identity and a password?
>
> On Jan 19, 2006, at 10:23 AM, Daniel Jalkut wrote:
>
>>
>>>  -stdinpass     read a null-terminated passphrase from standard  
>>> input.  If
>>>                     the standard input is a tty, the passphrase  
>>> will be read
>>>                     with readpassphrase(3).  -stdinpass replaces - 
>>> passphrase
>>>                     though the latter is still supported for  
>>> compatibility.
>>>                     Beware that the password will contain any  
>>> newlines before
>>>                     the NULL.  See the EXAMPLES section.
>>
>> So I assume you could do something like this:
>>
>> do shell script "echo MyPassword | hdiutil -stdinpass -other - 
>> options"