Folks:
In __crypto_alg_lookup, at about line 85 of api.c, there is the following:
if ((q->cra_flags ^ type) & mask)
continue;
There is no commenting on this at all.
Can someone please explain what this is for and just what is this trying
to filter?
I am trying to get dm-crypt to work with a ahash device that we have.
The dm-crypt is calling crypto_alloc_hash with "sha256" type 0, and
mask 0x 80
My driver is setting these flags:
.cra_flags = CRYPTO_ALG_TYPE_AHASH |
CRYPTO_ALG_ASYNC,
The search seems to be failing at the above sequence in
__crypto_alg_lookup.
Is dm-crypt supposed to work with ahash?
The Documentation/crypto does not seem to include much information
on using the ahash and ablkcipher infrastructure.
There is one document called async-tx-api.txt that seems to have no
correlation with the ahash or ablkcipher stuff. Is it still valid?
Is there another place I can look for decent documentation?
Thank you
Truly,
Mark Allyn
Portland, Oregon
www.allyn.com
971-563-7588
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