diff options
| author | Tianjia Zhang | 2022-10-27 14:54:59 +0800 |
|---|---|---|
| committer | Herbert Xu | 2022-11-04 17:34:31 +0800 |
| commit | cb9ba02b07d18172c6a6dcc69410c56482903230 (patch) | |
| tree | a8c249c36a040c9f92a84dc533f3c29758178e3a /arch/arm64/crypto | |
| parent | ce41fefd2443c25166458f24621b53a28fff989f (diff) | |
crypto: arm64/sm4 - simplify sm4_ce_expand_key() of CE implementation
Use a 128-bit swap mask and tbl instruction to simplify the implementation
for generating SM4 rkey_dec.
Also fixed the issue of not being wrapped by kernel_neon_begin/end() when
using the sm4_ce_expand_key() function.
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'arch/arm64/crypto')
| -rw-r--r-- | arch/arm64/crypto/sm4-ce-core.S | 46 | ||||
| -rw-r--r-- | arch/arm64/crypto/sm4-ce-glue.c | 2 |
2 files changed, 24 insertions, 24 deletions
diff --git a/arch/arm64/crypto/sm4-ce-core.S b/arch/arm64/crypto/sm4-ce-core.S index 41fc745a8528..9e4b4f01cdf3 100644 --- a/arch/arm64/crypto/sm4-ce-core.S +++ b/arch/arm64/crypto/sm4-ce-core.S @@ -65,32 +65,23 @@ SYM_FUNC_START(sm4_ce_expand_key) sm4ekey v6.4s, v5.4s, v30.4s; sm4ekey v7.4s, v6.4s, v31.4s; + adr_l x5, .Lbswap128_mask + ld1 {v24.16b}, [x5] + st1 {v0.16b-v3.16b}, [x1], #64; st1 {v4.16b-v7.16b}, [x1]; - rev64 v7.4s, v7.4s; - rev64 v6.4s, v6.4s; - rev64 v5.4s, v5.4s; - rev64 v4.4s, v4.4s; - rev64 v3.4s, v3.4s; - rev64 v2.4s, v2.4s; - rev64 v1.4s, v1.4s; - rev64 v0.4s, v0.4s; - ext v7.16b, v7.16b, v7.16b, #8; - ext v6.16b, v6.16b, v6.16b, #8; - ext v5.16b, v5.16b, v5.16b, #8; - ext v4.16b, v4.16b, v4.16b, #8; - ext v3.16b, v3.16b, v3.16b, #8; - ext v2.16b, v2.16b, v2.16b, #8; - ext v1.16b, v1.16b, v1.16b, #8; - ext v0.16b, v0.16b, v0.16b, #8; - st1 {v7.16b}, [x2], #16; - st1 {v6.16b}, [x2], #16; - st1 {v5.16b}, [x2], #16; - st1 {v4.16b}, [x2], #16; - st1 {v3.16b}, [x2], #16; - st1 {v2.16b}, [x2], #16; - st1 {v1.16b}, [x2], #16; - st1 {v0.16b}, [x2]; + + tbl v16.16b, {v7.16b}, v24.16b + tbl v17.16b, {v6.16b}, v24.16b + tbl v18.16b, {v5.16b}, v24.16b + tbl v19.16b, {v4.16b}, v24.16b + tbl v20.16b, {v3.16b}, v24.16b + tbl v21.16b, {v2.16b}, v24.16b + tbl v22.16b, {v1.16b}, v24.16b + tbl v23.16b, {v0.16b}, v24.16b + + st1 {v16.16b-v19.16b}, [x2], #64 + st1 {v20.16b-v23.16b}, [x2] ret; SYM_FUNC_END(sm4_ce_expand_key) @@ -578,3 +569,10 @@ SYM_FUNC_START(sm4_ce_ctr_enc) ret SYM_FUNC_END(sm4_ce_ctr_enc) + + + .section ".rodata", "a" + .align 4 +.Lbswap128_mask: + .byte 0x0c, 0x0d, 0x0e, 0x0f, 0x08, 0x09, 0x0a, 0x0b + .byte 0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03 diff --git a/arch/arm64/crypto/sm4-ce-glue.c b/arch/arm64/crypto/sm4-ce-glue.c index e56e81b1f35f..ff2d8442d473 100644 --- a/arch/arm64/crypto/sm4-ce-glue.c +++ b/arch/arm64/crypto/sm4-ce-glue.c @@ -44,8 +44,10 @@ static int sm4_setkey(struct crypto_skcipher *tfm, const u8 *key, if (key_len != SM4_KEY_SIZE) return -EINVAL; + kernel_neon_begin(); sm4_ce_expand_key(key, ctx->rkey_enc, ctx->rkey_dec, crypto_sm4_fk, crypto_sm4_ck); + kernel_neon_end(); return 0; } |