From: Nicolas Toromanoff nicolas.toromanoff@foss.st.com
[ Upstream commit d703c7a994ee34b7fa89baf21631fca0aa9f17fc ]
Don't erase key: If key is erased before the crypto_finalize_.*_request() call, some pending process will run with a key={ 0 }. Moreover if the key is reset at end of request, it breaks xts chaining mode, as for last xts block (in case input len is not a multiple of block) a new AES request is started without calling again set_key().
Fixes: 9e054ec21ef8 ("crypto: stm32 - Support for STM32 CRYP crypto module")
Signed-off-by: Nicolas Toromanoff nicolas.toromanoff@foss.st.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/crypto/stm32/stm32-cryp.c | 2 -- 1 file changed, 2 deletions(-)
diff --git a/drivers/crypto/stm32/stm32-cryp.c b/drivers/crypto/stm32/stm32-cryp.c index 9b3511236ba25..92472a48c0454 100644 --- a/drivers/crypto/stm32/stm32-cryp.c +++ b/drivers/crypto/stm32/stm32-cryp.c @@ -669,8 +669,6 @@ static void stm32_cryp_finish_req(struct stm32_cryp *cryp, int err) else crypto_finalize_ablkcipher_request(cryp->engine, cryp->req, err); - - memset(cryp->ctx->key, 0, cryp->ctx->keylen); }
static int stm32_cryp_cpu_start(struct stm32_cryp *cryp)