mirror of https://github.com/hak5/openwrt.git
72 lines
2.4 KiB
Diff
72 lines
2.4 KiB
Diff
From fc340115ffb8235c1bbd200c28855e6373d0dd1a Mon Sep 17 00:00:00 2001
|
|
From: Christian Lamparter <chunkeey@gmail.com>
|
|
Date: Thu, 19 Apr 2018 18:41:55 +0200
|
|
Subject: [PATCH 6/8] crypto: crypto4xx - properly set IV after de- and encrypt
|
|
|
|
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>
|
|
---
|
|
drivers/crypto/amcc/crypto4xx_alg.c | 3 ++-
|
|
drivers/crypto/amcc/crypto4xx_core.c | 9 +++++++++
|
|
2 files changed, 11 insertions(+), 1 deletion(-)
|
|
|
|
--- a/drivers/crypto/amcc/crypto4xx_alg.c
|
|
+++ b/drivers/crypto/amcc/crypto4xx_alg.c
|
|
@@ -141,7 +141,8 @@ static int crypto4xx_setkey_aes(struct c
|
|
/* Setup SA */
|
|
sa = ctx->sa_in;
|
|
|
|
- set_dynamic_sa_command_0(sa, SA_NOT_SAVE_HASH, SA_NOT_SAVE_IV,
|
|
+ set_dynamic_sa_command_0(sa, SA_NOT_SAVE_HASH, (cm == CRYPTO_MODE_CBC ?
|
|
+ SA_SAVE_IV : SA_NOT_SAVE_IV),
|
|
SA_LOAD_HASH_FROM_SA, SA_LOAD_IV_FROM_STATE,
|
|
SA_NO_HEADER_PROC, SA_HASH_ALG_NULL,
|
|
SA_CIPHER_ALG_AES, SA_PAD_TYPE_ZERO,
|
|
--- a/drivers/crypto/amcc/crypto4xx_core.c
|
|
+++ b/drivers/crypto/amcc/crypto4xx_core.c
|
|
@@ -545,6 +545,15 @@ static void crypto4xx_cipher_done(struct
|
|
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 (pd_uinfo->state & PD_ENTRY_BUSY)
|