From e7f35b6f10599a574acb3bcca40845eeccfdc63b Mon Sep 17 00:00:00 2001
From: Huaxin Lu <luhuaxin1@huawei.com>
Date: Fri, 1 Sep 2023 20:08:46 +0800
Subject: [PATCH] Support SM2 CMS signature

Signed-off-by: Huaxin Lu <luhuaxin1@huawei.com>
---
 crypto/cms/cms_sd.c | 2 +-
 crypto/evp/p_lib.c  | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/crypto/cms/cms_sd.c b/crypto/cms/cms_sd.c
index 2093657..083edd2 100644
--- a/crypto/cms/cms_sd.c
+++ b/crypto/cms/cms_sd.c
@@ -232,7 +232,7 @@ static int cms_sd_asn1_ctrl(CMS_SignerInfo *si, int cmd)
     EVP_PKEY *pkey = si->pkey;
     int i;
 
-    if (EVP_PKEY_is_a(pkey, "DSA") || EVP_PKEY_is_a(pkey, "EC"))
+    if (EVP_PKEY_is_a(pkey, "DSA") || EVP_PKEY_is_a(pkey, "EC") || EVP_PKEY_is_a(pkey, "SM2"))
         return ossl_cms_ecdsa_dsa_sign(si, cmd) > 0;
     else if (EVP_PKEY_is_a(pkey, "RSA") || EVP_PKEY_is_a(pkey, "RSA-PSS"))
         return ossl_cms_rsa_sign(si, cmd) > 0;
diff --git a/crypto/evp/p_lib.c b/crypto/evp/p_lib.c
index f6acb5b..9567bb0 100644
--- a/crypto/evp/p_lib.c
+++ b/crypto/evp/p_lib.c
@@ -982,6 +982,9 @@ int EVP_PKEY_type(int type)
 
 int EVP_PKEY_get_id(const EVP_PKEY *pkey)
 {
+    if (EVP_PKEY_is_a(pkey, "SM2")) {
+        return EVP_PKEY_SM2;
+    }
     return pkey->type;
 }
 
-- 
2.33.0