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crypto: arm64/sm4 - export reusable CE acceleration functions

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In the accelerated implementation of the SM4 algorithm using the Crypto
Extension instructions, there are some functions that can be reused in
the upcoming accelerated implementation of the GCM/CCM mode, and the
CBC/CFB encryption is reused in the optimized implementation of SVESM4.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Tianjia Zhang 2022-10-27 14:55:00 +08:00 committed by Herbert Xu
parent cb9ba02b07
commit 45089dbe59
2 changed files with 21 additions and 0 deletions
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5
arch/arm64/crypto/sm4-ce-glue.c
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@ -36,6 +36,11 @@ asmlinkage void sm4_ce_cfb_dec(const u32 *rkey, u8 *dst, const u8 *src,
asmlinkage void sm4_ce_ctr_enc(const u32 *rkey, u8 *dst, const u8 *src,
u8 *iv, unsigned int nblks);
EXPORT_SYMBOL(sm4_ce_expand_key);
EXPORT_SYMBOL(sm4_ce_crypt_block);
EXPORT_SYMBOL(sm4_ce_cbc_enc);
EXPORT_SYMBOL(sm4_ce_cfb_enc);
static int sm4_setkey(struct crypto_skcipher *tfm, const u8 *key,
unsigned int key_len)
{

16
arch/arm64/crypto/sm4-ce.h Normal file
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@ -0,0 +1,16 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* SM4 common functions for Crypto Extensions
* Copyright (C) 2022 Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
*/
void sm4_ce_expand_key(const u8 *key, u32 *rkey_enc, u32 *rkey_dec,
const u32 *fk, const u32 *ck);
void sm4_ce_crypt_block(const u32 *rkey, u8 *dst, const u8 *src);
void sm4_ce_cbc_enc(const u32 *rkey_enc, u8 *dst, const u8 *src,
u8 *iv, unsigned int nblocks);
void sm4_ce_cfb_enc(const u32 *rkey_enc, u8 *dst, const u8 *src,
u8 *iv, unsigned int nblocks);