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crypto: aead - Add chunk size
This patch adds a chunk size parameter to aead algorithms, just like the chunk size for skcipher algorithms. However, unlike skcipher we do not currently export this to AEAD users. It is only meant to be used by AEAD implementors for now. Signed-off-by: Herbert Xu <[email protected]>
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3 changed files with 33 additions and 6 deletions
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@ -346,9 +346,13 @@ static int aead_prepare_alg(struct aead_alg *alg)
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{
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struct crypto_alg *base = &alg->base;
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if (max(alg->maxauthsize, alg->ivsize) > PAGE_SIZE / 8)
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if (max3(alg->maxauthsize, alg->ivsize, alg->chunksize) >
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PAGE_SIZE / 8)
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return -EINVAL;
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if (!alg->chunksize)
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alg->chunksize = base->cra_blocksize;
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base->cra_type = &crypto_aead_type;
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base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK;
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base->cra_flags |= CRYPTO_ALG_TYPE_AEAD;
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