include/crypto/sm4.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 /*
   4  * Common values for the SM4 algorithm
   5  * Copyright (C) 2018 ARM Limited or its affiliates.
   6  */
   7
   8 #ifndef _CRYPTO_SM4_H
   9 #define _CRYPTO_SM4_H
  10
  11 #include <linux/types.h>
  12 #include <linux/crypto.h>
  13
  14 #define SM4_KEY_SIZE    16
  15 #define SM4_BLOCK_SIZE  16
  16 #define SM4_RKEY_WORDS  32
  17
  18 struct crypto_sm4_ctx {
  19         u32 rkey_enc[SM4_RKEY_WORDS];
  20         u32 rkey_dec[SM4_RKEY_WORDS];
  21 };
  22
  23 int crypto_sm4_set_key(struct crypto_tfm *tfm, const u8 *in_key,
  24                        unsigned int key_len);
  25 int crypto_sm4_expand_key(struct crypto_sm4_ctx *ctx, const u8 *in_key,
  26                           unsigned int key_len);
  27
  28 void crypto_sm4_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in);
  29 void crypto_sm4_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in);
  30
  31 #endif