linux-kernel - [PATCH v4 1/2 RESEND] pkcs7: parser support SM2 and SM3 algorithms combination

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Date:   Mon, 27 Jun 2022 17:21:41 +0800
From:   Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
To:     Jarkko Sakkinen <jarkko@...nel.org>,
        David Howells <dhowells@...hat.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>,
        Elvira Khabirova <e.khabirova@....ru>,
        Vitaly Chikunov <vt@...linux.org>,
        Stefan Berger <stefanb@...ux.ibm.com>,
        keyrings@...r.kernel.org, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
Subject: [PATCH v4 1/2 RESEND] 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@...ux.alibaba.com>
Reviewed-by: Vitaly Chikunov <vt@...linux.org>
Reviewed-by: Stefan Berger <stefanb@...ux.ibm.com>
---
 crypto/asymmetric_keys/pkcs7_parser.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/crypto/asymmetric_keys/pkcs7_parser.c b/crypto/asymmetric_keys/pkcs7_parser.c
index 6592279d839a..24e2e4a6d842 100644
--- a/crypto/asymmetric_keys/pkcs7_parser.c
+++ b/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;
-- 
2.24.3 (Apple Git-128)