Fix the problem that the input data field 'c1.x' is overwitten by the output data calculated by the hardware.

Signed-off-by: Zhiqi Song songzhiqi1@huawei.com --- v1/drv/hisi_hpre_udrv.c | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/v1/drv/hisi_hpre_udrv.c b/v1/drv/hisi_hpre_udrv.c index 0738f44..00ceec2 100644 --- a/v1/drv/hisi_hpre_udrv.c +++ b/v1/drv/hisi_hpre_udrv.c @@ -1969,7 +1969,6 @@ static int fill_sm2_dec_sqe(void *message, struct qm_queue_info *info, __u16 i)

/* compute d * c1 */ memcpy(dst, req_src, sizeof(*dst)); - dst->op_type = HPRE_SM2_DEC; *(struct wcrypto_ecc_msg **)(dst + 1) = req_src; dst->in = (void *)&din->c1; @@ -2047,8 +2046,8 @@ static int qm_parse_ecc_sqe_general(void *msg, const struct qm_queue_info *info,

dma_out = DMA_ADDR(hw_msg->hi_out, hw_msg->low_out); dma_key = DMA_ADDR(hw_msg->hi_key, hw_msg->low_key); - dma_in = DMA_ADDR(hw_msg->hi_in, hw_msg->hi_in); - drv_iova_unmap(q, NULL, (void *)(uintptr_t)dma_in, olen); + dma_in = DMA_ADDR(hw_msg->hi_in, hw_msg->low_in); + drv_iova_unmap(q, NULL, (void *)(uintptr_t)dma_in, ilen); drv_iova_unmap(q, NULL, (void *)(uintptr_t)dma_out, olen); drv_iova_unmap(q, NULL, (void *)(uintptr_t)dma_key, kbytes);

@@ -2265,8 +2264,8 @@ static int is_equal(struct wd_dtb *src, struct wd_dtb *dst) static int sm2_hash(struct wd_dtb *out, struct wcrypto_ecc_point *x2y2, struct wd_dtb *msg, struct q_info *q_info) { - struct wcrypto_hash_mt *hash = &q_info->hash; __u64 lens = (__u64)msg->dsize + 2 * (__u64)x2y2->x.dsize; + struct wcrypto_hash_mt *hash = &q_info->hash; char hash_out[MAX_HASH_LENS] = {0}; __u64 in_len = 0; __u32 h_bytes; @@ -2353,8 +2352,10 @@ static int sm2_convert_dec_out(struct wcrypto_ecc_msg *src, struct wcrypto_sm2_dec_out *dout = &out->param.dout; struct wcrypto_ecc_in *in = (void *)src->in; struct wcrypto_sm2_dec_in *din = &in->param.din; + char buff[MAX_HASH_LENS] = {0}; struct wcrypto_ecc_point x2y2; __u32 ksz = dst->key_bytes; + struct wd_dtb u = {0}; int ret;

/* dec origin out data fmt: @@ -2362,8 +2363,6 @@ static int sm2_convert_dec_out(struct wcrypto_ecc_msg *src, * final out data fmt: * | plaintext | */ - - /* x2y2 :copy x2y2 into din->c1 */ x2y2.x.data = (void *)dst->out; x2y2.y.data = (void *)(dst->out + ksz); x2y2.x.dsize = ksz; @@ -2376,20 +2375,21 @@ static int sm2_convert_dec_out(struct wcrypto_ecc_msg *src, return ret; }

- /* M' = C2 XOR t */ + /* M' = c2 XOR t */ sm2_xor(&dout->plaintext, &din->c2);

- /* u = hash(x2 || M' || y2), save u to din->c2 */ - ret = sm2_hash(&din->c1.x, &x2y2, &dout->plaintext, q_info); + /* u = hash(x2 || M' || y2) */ + u.data = buff; + ret = sm2_hash(&u, &x2y2, &dout->plaintext, q_info); if (unlikely(ret)) { WD_ERR("failed to compute c3, ret = %d!\n", ret); return ret; }

- /* u == c3 */ - ret = is_equal(&din->c1.x, &din->c3); + /* Judge whether u == c3 */ + ret = is_equal(&u, &din->c3); if (ret) - WD_ERR("failed to dec sm2, u != C3!\n"); + WD_ERR("failed to dec sm2, u != c3!\n");

return ret; }