include/crypto/sm2.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * sm2.h - SM2 asymmetric public-key algorithm
   4  * as specified by OSCCA GM/T 0003.1-2012 -- 0003.5-2012 SM2 and
   5  * described at https://tools.ietf.org/html/draft-shen-sm2-ecdsa-02
   6  *
   7  * Copyright (c) 2020, Alibaba Group.
   8  * Written by Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
   9  */
  10
  11 #ifndef _CRYPTO_SM2_H
  12 #define _CRYPTO_SM2_H
  13
  14 struct shash_desc;
  15
  16 #if IS_REACHABLE(CONFIG_CRYPTO_SM2)
  17 int sm2_compute_z_digest(struct shash_desc *desc,
  18                          const void *key, unsigned int keylen, void *dgst);
  19 #else
  20 static inline int sm2_compute_z_digest(struct shash_desc *desc,
  21                                        const void *key, unsigned int keylen,
  22                                        void *dgst)
  23 {
  24         return -ENOTSUPP;
  25 }
  26 #endif
  27
  28 #endif /* _CRYPTO_SM2_H */