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| author | Tianjia Zhang <tianjia.zhang@linux.alibaba.com> | 2022-03-15 17:44:51 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2022-04-08 16:12:46 +0800 |
| commit | 73c919d314ad57be900437fd329990b1d846b763 (patch) | |
| tree | 60e59a08cfe9cc16cefa245a8f3c0cd0af54bfdb | |
| parent | d2825fa9365d0101571ed16534b16b7c8d261ab3 (diff) | |
| download | lwn-73c919d314ad57be900437fd329990b1d846b763.tar.gz lwn-73c919d314ad57be900437fd329990b1d846b763.zip | |
crypto: sm4 - export sm4 constant arrays
Export the constant arrays fk, ck, sbox of the SM4 algorithm, and
add the 'crypto_sm4_' prefix, where sbox is used in the SM4 NEON
implementation for the tbl/tbx instruction to replace the S-BOX,
and the fk, ck arrays are used in the SM4 CE implementation. Use
the sm4ekey instruction to speed up key expansion operations.
Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | crypto/sm4.c | 10 | ||||
| -rw-r--r-- | include/crypto/sm4.h | 4 |
2 files changed, 13 insertions, 1 deletions
diff --git a/crypto/sm4.c b/crypto/sm4.c index 284e62576d0c..2c44193bc27e 100644 --- a/crypto/sm4.c +++ b/crypto/sm4.c @@ -11,7 +11,7 @@ #include <asm/unaligned.h> #include <crypto/sm4.h> -static const u32 fk[4] = { +static const u32 ____cacheline_aligned fk[4] = { 0xa3b1bac6, 0x56aa3350, 0x677d9197, 0xb27022dc }; @@ -61,6 +61,14 @@ static const u8 ____cacheline_aligned sbox[256] = { 0x79, 0xee, 0x5f, 0x3e, 0xd7, 0xcb, 0x39, 0x48 }; +extern const u32 crypto_sm4_fk[4] __alias(fk); +extern const u32 crypto_sm4_ck[32] __alias(ck); +extern const u8 crypto_sm4_sbox[256] __alias(sbox); + +EXPORT_SYMBOL(crypto_sm4_fk); +EXPORT_SYMBOL(crypto_sm4_ck); +EXPORT_SYMBOL(crypto_sm4_sbox); + static inline u32 sm4_t_non_lin_sub(u32 x) { u32 out; diff --git a/include/crypto/sm4.h b/include/crypto/sm4.h index 709f286e7b25..9656a9a40326 100644 --- a/include/crypto/sm4.h +++ b/include/crypto/sm4.h @@ -21,6 +21,10 @@ struct sm4_ctx { u32 rkey_dec[SM4_RKEY_WORDS]; }; +extern const u32 crypto_sm4_fk[]; +extern const u32 crypto_sm4_ck[]; +extern const u8 crypto_sm4_sbox[]; + /** * sm4_expandkey - Expands the SM4 key as described in GB/T 32907-2016 * @ctx: The location where the computed key will be stored. |