Commit bde55822 authored by Akhil R's avatar Akhil R Committed by Herbert Xu
Browse files

crypto: tegra - Set IV to NULL explicitly for AES ECB 



It may happen that the variable req->iv may have stale values or
zero sized buffer by default and may end up getting used during
encryption/decryption. This inturn may corrupt the results or break the
operation. Set the req->iv variable to NULL explicitly for algorithms
like AES-ECB where IV is not used.

Fixes: 0880bb3b ("crypto: tegra - Add Tegra Security Engine driver")
Signed-off-by: default avatarAkhil R <akhilrajeev@nvidia.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent ce390d6c

drivers/crypto/tegra/tegra-se-aes.c

+3 −0
Original line number Diff line number Diff line
@@ -446,6 +446,9 @@ static int tegra_aes_crypt(struct skcipher_request *req, bool encrypt) 
	if (!req->cryptlen)

		return 0;



	if (ctx->alg == SE_ALG_ECB)

		req->iv = NULL;



	rctx->encrypt = encrypt;

	rctx->config = tegra234_aes_cfg(ctx->alg, encrypt);

	rctx->crypto_config = tegra234_aes_crypto_cfg(ctx->alg, encrypt);