pkcs7: parser support SM2 and SM3 algorithms combination

Support parsing the message signature of the SM2 and SM3 algorithm
combination. This group of algorithms has been well supported. One
of the main users is module signature verification.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>
Reviewed-by: Vitaly Chikunov <vt@altlinux.org>
Reviewed-by: Stefan Berger <stefanb@linux.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>

crypto/asymmetric_keys/pkcs7_parser.c

@@ -248,6 +248,9 @@ int pkcs7_sig_note_digest_algo(void *context, size_t hdrlen,
 	case OID_sha224:
 		ctx->sinfo->sig->hash_algo = "sha224";
 		break;
+	case OID_sm3:
+		ctx->sinfo->sig->hash_algo = "sm3";
+		break;
 	default:
 		printk("Unsupported digest algo: %u\n", ctx->last_oid);
 		return -ENOPKG;
@@ -277,6 +280,10 @@ int pkcs7_sig_note_pkey_algo(void *context, size_t hdrlen,
 		ctx->sinfo->sig->pkey_algo = "ecdsa";
 		ctx->sinfo->sig->encoding = "x962";
 		break;
+	case OID_SM2_with_SM3:
+		ctx->sinfo->sig->pkey_algo = "sm2";
+		ctx->sinfo->sig->encoding = "raw";
+		break;
 	default:
 		printk("Unsupported pkey algo: %u\n", ctx->last_oid);
 		return -ENOPKG;