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| author | Kees Cook <keescook@chromium.org> | 2018-08-07 14:18:40 -0700 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2018-09-04 11:35:04 +0800 |
| commit | 3df7ba70b9a01a1ccadd44cacb66e8275bc76560 (patch) | |
| tree | 28bf18a2a2afa3003d200c1e53accb40eb824e2c /crypto/crypto_wq.c | |
| parent | 063bb34a20467b3225c6629f8a15784bbd72fb19 (diff) | |
| download | linux-crypto-3df7ba70b9a01a1ccadd44cacb66e8275bc76560.tar.gz linux-crypto-3df7ba70b9a01a1ccadd44cacb66e8275bc76560.zip | |
crypto: api - Introduce generic max blocksize and alignmask
In the quest to remove all stack VLA usage from the kernel[1], this
exposes a new general upper bound on crypto blocksize and alignmask
(higher than for the existing cipher limits) for VLA removal,
and introduces new checks.
At present, the highest cra_alignmask in the kernel is 63. The highest
cra_blocksize is 144 (SHA3_224_BLOCK_SIZE, 18 8-byte words). For the
new blocksize limit, I went with 160 (20 8-byte words).
[1] https://lkml.kernel.org/r/CA+55aFzCG-zNmZwX4A2FQpadafLfEzK6CC=qPXydAacU1RqZWA@mail.gmail.com
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/crypto_wq.c')
0 files changed, 0 insertions, 0 deletions