mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-02 10:59:18 -04:00
Code Issues Packages Projects Releases Wiki Activity

crypto: tegra - Use HMAC fallback when keyslots are full

Browse Source 
The intermediate results for HMAC is stored in the allocated keyslot by
the hardware. Dynamic allocation of keyslot during an operation is hence
not possible. As the number of keyslots are limited in the hardware,
fallback to the HMAC software implementation if keyslots are not available

Fixes: 0880bb3b00 ("crypto: tegra - Add Tegra Security Engine driver")
Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Akhil R
2025-02-24 14:46:10 +05:30
committed by Herbert Xu
parent b157e7a228
commit f80a2e2e77
1 changed files with 6 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/crypto/tegra/tegra-se-hash.c
View File

@@ -632,13 +632,18 @@ static int tegra_hmac_setkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
{
struct tegra_sha_ctx *ctx = crypto_ahash_ctx(tfm);
int ret;
if (aes_check_keylen(keylen))
return tegra_hmac_fallback_setkey(ctx, key, keylen);
ret = tegra_key_submit(ctx->se, key, keylen, ctx->alg, &ctx->key_id);
if (ret)
return tegra_hmac_fallback_setkey(ctx, key, keylen);
ctx->fallback = false;
return tegra_key_submit(ctx->se, key, keylen, ctx->alg, &ctx->key_id);
return 0;
}
static int tegra_sha_init(struct ahash_request *req)