On Aug 2, 2009, at 12:24 PM, mdipierro wrote:

>
> But if there is a default key than everybody knows the default key.
> What's the point? The key has to be passed and has to be unique for
> every app.

The point is that the resulting hashes aren't in publicly available  
precomputed rainbow tables.

And the default key could be something like: key='change this key to  
something application-specific!'

Better than unsalted MD5, and an easy-to-comply-with nudge to the  
developer.

(Query: are SHAx HMAC keys arbitrary byte strings, or are they  
restricted in some way?)

>
> On Aug 2, 1:52 pm, Fran <francisb...@googlemail.com> wrote:
>> On Aug 2, 7:41 pm, Jonathan Lundell <jlund...@pobox.com> wrote:
>>
>>> Then let's make this the default, with a default key.
>>
>> +1
>> An easy way to add /some/ security (i.e. helps against attacks which
>> don't know about web2py) & if this is int he scaffolding app, then it
>> makes it clearer that this is a change people should make in their  
>> own
>> code...
>>
>> F



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