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 */ 29