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      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 
     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