diff options
| author | Christian Lamparter <chunkeey@gmail.com> | 2018-04-19 18:41:55 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-27 09:34:41 +0200 |
| commit | 862b70177babb6533aaac56b86ba4b946f53ada9 (patch) | |
| tree | 5b97c5be03cac5ebcd479e864c19ea38a522fadc /drivers/crypto/amcc/crypto4xx_core.c | |
| parent | aec9cfdd09278d9c9c074fa6fef17a44233dae64 (diff) | |
crypto: crypto4xx - properly set IV after de- and encrypt
[ Upstream commit fc340115ffb8235c1bbd200c28855e6373d0dd1a ]
This patch fixes cts(cbc(aes)) test when cbc-aes-ppc4xx is used.
alg: skcipher: Test 1 failed (invalid result) on encryption for cts(cbc-aes-ppc4xx)
00000000: 4b 10 75 fc 2f 14 1b 6a 27 35 37 33 d1 b7 70 05
00000010: 97
alg: skcipher: Failed to load transform for cts(cbc(aes)): -2
The CTS cipher mode expect the IV (req->iv) of skcipher_request
to contain the last ciphertext block after the {en,de}crypt
operation is complete.
Fix this issue for the AMCC Crypto4xx hardware engine.
The tcrypt test case for cts(cbc(aes)) is now correctly passed.
name : cts(cbc(aes))
driver : cts(cbc-aes-ppc4xx)
module : cts
priority : 300
refcnt : 1
selftest : passed
internal : no
type : skcipher
async : yes
blocksize : 16
min keysize : 16
max keysize : 32
ivsize : 16
chunksize : 16
walksize : 16
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/crypto/amcc/crypto4xx_core.c')
| -rw-r--r-- | drivers/crypto/amcc/crypto4xx_core.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/crypto/amcc/crypto4xx_core.c b/drivers/crypto/amcc/crypto4xx_core.c index c7524bbbaf98..7d066fa9f2ad 100644 --- a/drivers/crypto/amcc/crypto4xx_core.c +++ b/drivers/crypto/amcc/crypto4xx_core.c @@ -646,6 +646,15 @@ static u32 crypto4xx_ablkcipher_done(struct crypto4xx_device *dev, addr = dma_map_page(dev->core_dev->device, sg_page(dst), dst->offset, dst->length, DMA_FROM_DEVICE); } + + if (pd_uinfo->sa_va->sa_command_0.bf.save_iv == SA_SAVE_IV) { + struct crypto_skcipher *skcipher = crypto_skcipher_reqtfm(req); + + crypto4xx_memcpy_from_le32((u32 *)req->iv, + pd_uinfo->sr_va->save_iv, + crypto_skcipher_ivsize(skcipher)); + } + crypto4xx_ret_sg_desc(dev, pd_uinfo); if (ablk_req->base.complete != NULL) ablk_req->base.complete(&ablk_req->base, 0); |