Messages in this thread | | | Date | Wed, 29 May 2019 22:21:50 +0200 (CEST) | From | Richard Weinberger <> | Subject | Re: Can an ahash driver be used through shash API? |
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Stephan,
----- Ursprüngliche Mail ----- >> I've seen that it does actually work the other way around, since >> crypto_init_shash_ops_async() in crypto/shash.c takes care of translating >> calls from ahash to shash and that's how the *-generic drivers are usable >> through the ahash API. > > The crypto_alloc_shash will only identify cipher implementations that were > registered with the CRYPTO_ALG_TYPE_SHASH flag. That flag is set when a cipher > is registered using crypto_register_shash. > > Thus, ciphers registered with crypto_register_ahash will not bear this flag > and thus will not be found by the allocation function.
is there a reason why we don't emulate the synchronous functionality in the crypto API layer if a driver implements only the async interface?
Or is it just a matter of -ENOPATCH? :)
Thanks, //richard
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