This is a note to let you know that I've just added the patch titled
crypto: artpec6 - set correct iv size for gcm(aes)
to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: crypto-artpec6-set-correct-iv-size-for-gcm-aes.patch and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Thu Mar 22 14:26:48 CET 2018
From: Lars Persson lars.persson@axis.com Date: Tue, 12 Dec 2017 12:40:22 +0100 Subject: crypto: artpec6 - set correct iv size for gcm(aes)
From: Lars Persson lars.persson@axis.com
[ Upstream commit 6d6e71feb183aa588c849e20e7baa47cb162928a ]
The IV size should not include the 32 bit counter. Because we had the IV size set as 16 the transform only worked when the IV input was zero padded.
Fixes: a21eb94fc4d3 ("crypto: axis - add ARTPEC-6/7 crypto accelerator driver") Signed-off-by: Lars Persson larper@axis.com Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/crypto/axis/artpec6_crypto.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
--- a/drivers/crypto/axis/artpec6_crypto.c +++ b/drivers/crypto/axis/artpec6_crypto.c @@ -22,6 +22,7 @@ #include <linux/slab.h>
#include <crypto/aes.h> +#include <crypto/gcm.h> #include <crypto/internal/aead.h> #include <crypto/internal/hash.h> #include <crypto/internal/skcipher.h> @@ -1934,7 +1935,7 @@ static int artpec6_crypto_prepare_aead(s
memcpy(req_ctx->hw_ctx.J0, areq->iv, crypto_aead_ivsize(cipher)); // The HW omits the initial increment of the counter field. - crypto_inc(req_ctx->hw_ctx.J0+12, 4); + memcpy(req_ctx->hw_ctx.J0 + GCM_AES_IV_SIZE, "\x00\x00\x00\x01", 4);
ret = artpec6_crypto_setup_out_descr(common, &req_ctx->hw_ctx, sizeof(struct artpec6_crypto_aead_hw_ctx), false, false); @@ -2956,7 +2957,7 @@ static struct aead_alg aead_algos[] = { .setkey = artpec6_crypto_aead_set_key, .encrypt = artpec6_crypto_aead_encrypt, .decrypt = artpec6_crypto_aead_decrypt, - .ivsize = AES_BLOCK_SIZE, + .ivsize = GCM_AES_IV_SIZE, .maxauthsize = AES_BLOCK_SIZE,
.base = {
Patches currently in stable-queue which might be from lars.persson@axis.com are
queue-4.14/crypto-artpec6-set-correct-iv-size-for-gcm-aes.patch