diff options
| author | Max Chou <max.chou@sifive.com> | 2023-07-12 00:59:12 +0800 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2023-09-11 11:45:55 +1000 |
| commit | f6ef550fe5c915d1d74ce9854280d16a8d71e230 (patch) | |
| tree | 893a60f9ab63c9735dd3555cc56a0f43e0b4e313 /include/crypto | |
| parent | 767eb03548f75b1d7c446305dd5bdb074c0b6d8f (diff) | |
crypto: Create sm4_subword
Allows sharing of sm4_subword between different targets.
Signed-off-by: Max Chou <max.chou@sifive.com>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Max Chou <max.chou@sifive.com>
Message-ID: <20230711165917.2629866-14-max.chou@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'include/crypto')
| -rw-r--r-- | include/crypto/sm4.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/crypto/sm4.h b/include/crypto/sm4.h index 9bd3ebc62e..de8245d8a7 100644 --- a/include/crypto/sm4.h +++ b/include/crypto/sm4.h @@ -3,4 +3,12 @@ extern const uint8_t sm4_sbox[256]; +static inline uint32_t sm4_subword(uint32_t word) +{ + return sm4_sbox[word & 0xff] | + sm4_sbox[(word >> 8) & 0xff] << 8 | + sm4_sbox[(word >> 16) & 0xff] << 16 | + sm4_sbox[(word >> 24) & 0xff] << 24; +} + #endif |