xref: /openssl/providers/common/der/der_sm2_sig.c (revision 3c2bdd7d)
1 /*
2  * Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
3  *
4  * Licensed under the Apache License 2.0 (the "License").  You may not use
5  * this file except in compliance with the License.  You can obtain a copy
6  * in the file LICENSE in the source distribution or at
7  * https://www.openssl.org/source/license.html
8  */
9 
10 #include <openssl/obj_mac.h>
11 #include "internal/packet.h"
12 #include "prov/der_sm2.h"
13 
14 /* Aliases so we can have a uniform MD_CASE */
15 #define ossl_der_oid_id_sm2_with_sm3   ossl_der_oid_sm2_with_SM3
16 
17 #define MD_CASE(name)                                                   \
18     case NID_##name:                                                    \
19         precompiled = ossl_der_oid_id_sm2_with_##name;                  \
20         precompiled_sz = sizeof(ossl_der_oid_id_sm2_with_##name);       \
21         break;
22 
ossl_DER_w_algorithmIdentifier_SM2_with_MD(WPACKET * pkt,int cont,EC_KEY * ec,int mdnid)23 int ossl_DER_w_algorithmIdentifier_SM2_with_MD(WPACKET *pkt, int cont,
24                                                EC_KEY *ec, int mdnid)
25 {
26     const unsigned char *precompiled = NULL;
27     size_t precompiled_sz = 0;
28 
29     switch (mdnid) {
30         MD_CASE(sm3);
31     default:
32         return 0;
33     }
34 
35     return ossl_DER_w_begin_sequence(pkt, cont)
36         /* No parameters (yet?) */
37         && ossl_DER_w_precompiled(pkt, -1, precompiled, precompiled_sz)
38         && ossl_DER_w_end_sequence(pkt, cont);
39 }
40