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Tue, 26 Jan 2021 17:04:02 GMT Received: from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7F263124052; Tue, 26 Jan 2021 17:04:02 +0000 (GMT) Received: from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 70D65124055; Tue, 26 Jan 2021 17:04:02 +0000 (GMT) Received: from sbct-3.pok.ibm.com (unknown [9.47.158.153]) by b01ledav002.gho.pok.ibm.com (Postfix) with ESMTP; Tue, 26 Jan 2021 17:04:02 +0000 (GMT) From: Stefan Berger To: dhowells@redhat.com, keyrings@vger.kernel.org Cc: linux-kernel@vger.kernel.org, herbert@gondor.apana.org.au, davem@davemloft.net, linux-crypto@vger.kernel.org, patrick@puiterwijk.org, Stefan Berger Subject: [PATCH 3/3] x509: Detect sm2 keys by their parameters OID Date: Tue, 26 Jan 2021 12:03:59 -0500 Message-Id: <20210126170359.363969-4-stefanb@linux.vnet.ibm.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210126170359.363969-1-stefanb@linux.vnet.ibm.com> References: <20210126170359.363969-1-stefanb@linux.vnet.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.343,18.0.737 definitions=2021-01-26_09:2021-01-26,2021-01-26 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 phishscore=0 impostorscore=0 suspectscore=0 malwarescore=0 mlxlogscore=999 adultscore=0 bulkscore=0 lowpriorityscore=0 mlxscore=0 spamscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2101260086 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org From: Stefan Berger Detect whether a key is a sm2 type of key by its OID in the parameters array. Signed-off-by: Stefan Berger --- crypto/asymmetric_keys/x509_cert_parser.c | 27 +++++++++++++---------- 1 file changed, 15 insertions(+), 12 deletions(-) diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c index 720cc7977077..82e331da5041 100644 --- a/crypto/asymmetric_keys/x509_cert_parser.c +++ b/crypto/asymmetric_keys/x509_cert_parser.c @@ -485,6 +485,7 @@ int x509_extract_key_data(void *context, size_t hdrlen, const void *value, size_t vlen) { struct x509_parse_context *ctx = context; + enum OID oid; ctx->key_algo = ctx->last_oid; switch (ctx->last_oid) { @@ -496,18 +497,20 @@ int x509_extract_key_data(void *context, size_t hdrlen, ctx->cert->pub->pkey_algo = "ecrdsa"; break; case OID_id_ecPublicKey: - ctx->cert->pub->pkey_algo = "sm2"; - if (ctx->params_size > 2) { - enum OID oid = look_up_OID(ctx->params + 2, - ctx->params_size - 2); - switch (oid) { - case OID_id_prime192v1: - case OID_id_prime256v1: - ctx->cert->pub->pkey_algo = "ecdsa"; - break; - default: - break; - } + if (ctx->params_size < 2) + return -ENOPKG; + + oid = look_up_OID(ctx->params + 2, ctx->params_size - 2); + switch (oid) { + case OID_id_prime192v1: + case OID_id_prime256v1: + ctx->cert->pub->pkey_algo = "ecdsa"; + break; + case OID_sm2: + ctx->cert->pub->pkey_algo = "sm2"; + break; + default: + return -ENOPKG; } break; default: