1 /* 2 * Copyright 2017-2021 The OpenSSL Project Authors. All Rights Reserved. 3 * Copyright 2017 Ribose Inc. All Rights Reserved. 4 * Ported from Ribose contributions from Botan. 5 * 6 * Licensed under the OpenSSL license (the "License"). You may not use 7 * this file except in compliance with the License. You can obtain a copy 8 * in the file LICENSE in the source distribution or at 9 * https://www.openssl.org/source/license.html 10 */ 11 12 #ifndef OSSL_CRYPTO_SM2_H 13 # define OSSL_CRYPTO_SM2_H 14 # include <openssl/opensslconf.h> 15 16 # ifndef OPENSSL_NO_SM2 17 18 # include <openssl/ec.h> 19 20 /* The default user id as specified in GM/T 0009-2012 */ 21 # define SM2_DEFAULT_USERID "1234567812345678" 22 23 int sm2_compute_z_digest(uint8_t *out, 24 const EVP_MD *digest, 25 const uint8_t *id, 26 const size_t id_len, 27 const EC_KEY *key); 28 29 /* 30 * SM2 signature operation. Computes Z and then signs H(Z || msg) using SM2 31 */ 32 ECDSA_SIG *sm2_do_sign(const EC_KEY *key, 33 const EVP_MD *digest, 34 const uint8_t *id, 35 const size_t id_len, 36 const uint8_t *msg, size_t msg_len); 37 38 int sm2_do_verify(const EC_KEY *key, 39 const EVP_MD *digest, 40 const ECDSA_SIG *signature, 41 const uint8_t *id, 42 const size_t id_len, 43 const uint8_t *msg, size_t msg_len); 44 45 /* 46 * SM2 signature generation. 47 */ 48 int sm2_sign(const unsigned char *dgst, int dgstlen, 49 unsigned char *sig, unsigned int *siglen, EC_KEY *eckey); 50 51 /* 52 * SM2 signature verification. 53 */ 54 int sm2_verify(const unsigned char *dgst, int dgstlen, 55 const unsigned char *sig, int siglen, EC_KEY *eckey); 56 57 /* 58 * SM2 encryption 59 */ 60 int sm2_ciphertext_size(const EC_KEY *key, const EVP_MD *digest, size_t msg_len, 61 size_t *ct_size); 62 63 int sm2_plaintext_size(const unsigned char *ct, size_t ct_size, size_t *pt_size); 64 65 int sm2_encrypt(const EC_KEY *key, 66 const EVP_MD *digest, 67 const uint8_t *msg, 68 size_t msg_len, 69 uint8_t *ciphertext_buf, size_t *ciphertext_len); 70 71 int sm2_decrypt(const EC_KEY *key, 72 const EVP_MD *digest, 73 const uint8_t *ciphertext, 74 size_t ciphertext_len, uint8_t *ptext_buf, size_t *ptext_len); 75 76 # endif /* OPENSSL_NO_SM2 */ 77 #endif 78