On Tue, Oct 08, 2002 at 03:01:43PM +0200, Frederic DONNAT wrote:
> Hi all,
> 
> 
> I'd like to know the better way to be fault tolerant when using a cryto accelerator 
>through an engine.
> 
> In fact, we want to redirect all crypto computations provided by our engine to soft 
>ones when an error occured in our engine.
> In our crypto function, i try:
> 
>       - catch the error
>       - alert for crypto accelerator error
>       - get first engine (should be openssl one)
>       - set all pointer from our engine to openssl soft (openssl engine)
>       - try again to perform the request operation (with openssl soft)

quorum calculations could be used to ignore some (small) portion
of faults. Please consider to take a look at Shamir secret sharing

regards,
Vadim

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