diff options
Diffstat (limited to 'arch/arm64/crypto/sm4-ce-core.S')
| -rw-r--r-- | arch/arm64/crypto/sm4-ce-core.S | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/arch/arm64/crypto/sm4-ce-core.S b/arch/arm64/crypto/sm4-ce-core.S index ddd15ec09d38..877b80c54a0d 100644 --- a/arch/arm64/crypto/sm4-ce-core.S +++ b/arch/arm64/crypto/sm4-ce-core.S @@ -35,6 +35,7 @@ #define RTMP3 v19 #define RIV v20 +#define RMAC v20 #define RMASK v21 @@ -1007,6 +1008,75 @@ SYM_FUNC_START(sm4_ce_xts_dec) ret SYM_FUNC_END(sm4_ce_xts_dec) +.align 3 +SYM_FUNC_START(sm4_ce_mac_update) + /* input: + * x0: round key array, CTX + * x1: digest + * x2: src + * w3: nblocks + * w4: enc_before + * w5: enc_after + */ + SM4_PREPARE(x0) + + ld1 {RMAC.16b}, [x1] + + cbz w4, .Lmac_update + + SM4_CRYPT_BLK(RMAC) + +.Lmac_update: + cbz w3, .Lmac_ret + + sub w6, w3, #1 + cmp w5, wzr + csel w3, w3, w6, ne + + cbz w3, .Lmac_end + +.Lmac_loop_4x: + cmp w3, #4 + blt .Lmac_loop_1x + + sub w3, w3, #4 + + ld1 {v0.16b-v3.16b}, [x2], #64 + + eor RMAC.16b, RMAC.16b, v0.16b + SM4_CRYPT_BLK(RMAC) + eor RMAC.16b, RMAC.16b, v1.16b + SM4_CRYPT_BLK(RMAC) + eor RMAC.16b, RMAC.16b, v2.16b + SM4_CRYPT_BLK(RMAC) + eor RMAC.16b, RMAC.16b, v3.16b + SM4_CRYPT_BLK(RMAC) + + cbz w3, .Lmac_end + b .Lmac_loop_4x + +.Lmac_loop_1x: + sub w3, w3, #1 + + ld1 {v0.16b}, [x2], #16 + + eor RMAC.16b, RMAC.16b, v0.16b + SM4_CRYPT_BLK(RMAC) + + cbnz w3, .Lmac_loop_1x + + +.Lmac_end: + cbnz w5, .Lmac_ret + + ld1 {v0.16b}, [x2], #16 + eor RMAC.16b, RMAC.16b, v0.16b + +.Lmac_ret: + st1 {RMAC.16b}, [x1] + ret +SYM_FUNC_END(sm4_ce_mac_update) + .section ".rodata", "a" .align 4 |