linux-kernel - [PATCH v4 2/2] pkcs7: support EC-RDSA/streebog in SignerInfo

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Message-Id: <20210918080737.17252-3-tianjia.zhang@linux.alibaba.com>
Date:   Sat, 18 Sep 2021 16:07:37 +0800
From:   Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
To:     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>,
        Eric Biggers <ebiggers@...gle.com>,
        Eric Biggers <ebiggers@...nel.org>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        "Gilad Ben-Yossef" <gilad@...yossef.com>,
        Pascal van Leeuwen <pvanleeuwen@...bus.com>,
        keyrings@...r.kernel.org, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Jia Zhang <zhang.jia@...ux.alibaba.com>,
        "YiLin . Li" <YiLin.Li@...ux.alibaba.com>
Cc:     Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
Subject: [PATCH v4 2/2] pkcs7: support EC-RDSA/streebog in SignerInfo

From: Elvira Khabirova <e.khabirova@....ru>

Allow using EC-RDSA/streebog in pkcs7 certificates in a similar way
to how it's done in the x509 parser.

This is needed e.g. for loading kernel modules signed with EC-RDSA.

Signed-off-by: Elvira Khabirova <e.khabirova@....ru>
Reviewed-by: Vitaly Chikunov <vt@...linux.org>
Reviewed-by: Tianjia Zhang <tianjia.zhang@...ux.alibaba.com>
---
 crypto/asymmetric_keys/pkcs7_parser.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/crypto/asymmetric_keys/pkcs7_parser.c b/crypto/asymmetric_keys/pkcs7_parser.c
index 24e2e4a6d842..277482bb1777 100644
--- a/crypto/asymmetric_keys/pkcs7_parser.c
+++ b/crypto/asymmetric_keys/pkcs7_parser.c
@@ -251,6 +251,12 @@ int pkcs7_sig_note_digest_algo(void *context, size_t hdrlen,
 	case OID_sm3:
 		ctx->sinfo->sig->hash_algo = "sm3";
 		break;
+	case OID_gost2012Digest256:
+		ctx->sinfo->sig->hash_algo = "streebog256";
+		break;
+	case OID_gost2012Digest512:
+		ctx->sinfo->sig->hash_algo = "streebog512";
+		break;
 	default:
 		printk("Unsupported digest algo: %u\n", ctx->last_oid);
 		return -ENOPKG;
@@ -284,6 +290,11 @@ int pkcs7_sig_note_pkey_algo(void *context, size_t hdrlen,
 		ctx->sinfo->sig->pkey_algo = "sm2";
 		ctx->sinfo->sig->encoding = "raw";
 		break;
+	case OID_gost2012PKey256:
+	case OID_gost2012PKey512:
+		ctx->sinfo->sig->pkey_algo = "ecrdsa";
+		ctx->sinfo->sig->encoding = "raw";
+		break;
 	default:
 		printk("Unsupported pkey algo: %u\n", ctx->last_oid);
 		return -ENOPKG;
-- 
2.19.1.3.ge56e4f7