Messages in this thread | | | Date | Tue, 25 Jan 2005 13:14:01 -0800 | From | Matt Mackall <> | Subject | Re: [PATCH 6/12] random pt4: Replace SHA with faster version |
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On Tue, Jan 25, 2005 at 11:07:21PM +0200, Denis Vlasenko wrote: > On Friday 21 January 2005 23:41, Matt Mackall wrote: > > - * @W: 80 words of workspace > > + * @W: 80 words of workspace, caller should clear > > Why?
Are you asking why should the caller clear or why should it be cleared at all?
For the first question, having the caller do the clear avoids redundant clears on repeated calls.
For the second question, forward security. If an attacker breaks into the box shortly after a secret is generated, he may be able to recover the secret from such state.
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