Commit 45089dbe authored by Tianjia Zhang's avatar Tianjia Zhang Committed by Herbert Xu
Browse files

crypto: arm64/sm4 - export reusable CE acceleration functions 



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: default avatarTianjia Zhang <tianjia.zhang@linux.alibaba.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent cb9ba02b

arch/arm64/crypto/sm4-ce-glue.c

+5 −0
Original line number Diff line number Diff line
@@ -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)

{

arch/arm64/crypto/sm4-ce.h

0 → 100644
+16 −0
Original line number Diff line number Diff line 
/* 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);