| commit | 69aafa11ffb70017265432c6eb6c7d4602079bf6 | [log] [tgz] |
|---|---|---|
| author | Kees Cook <keescook@chromium.org> | Tue Aug 07 14:18:40 2018 -0700 |
| committer | Rishabh Bhatnagar <rishabhb@codeaurora.org> | Wed Nov 07 09:57:47 2018 -0800 |
| tree | 8098e899bb23058ec1f8eef39a084bd2cfaffead | |
| parent | 3f66393f50143ccfc3b06b13e2f728a246a23f99 [diff] |
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 Change-Id: Icee27c45f542a9de25310b193c5bd08bc236996e Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Git-Repo: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git Git-Commit: a9f7f88a12f1494deca1fd9e173c7ae886d14f91 Signed-off-by: Rishabh Bhatnagar <rishabhb@codeaurora.org>