On Wed, 2021-01-27 at 07:33 -0500, Stefan Berger wrote: > From: Stefan Berger <stef...@linux.ibm.com> > > Detect whether a key is an sm2 type of key by its OID in the parameters > array rather than assuming that everything under OID_id_ecPublicKey > is sm2, which is not the case. > > Signed-off-by: Stefan Berger <stef...@linux.ibm.com> > --- > crypto/asymmetric_keys/x509_cert_parser.c | 13 ++++++++++++- > 1 file changed, 12 insertions(+), 1 deletion(-) > > diff --git a/crypto/asymmetric_keys/x509_cert_parser.c > b/crypto/asymmetric_keys/x509_cert_parser.c > index 52c9b455fc7d..4643fe5ed69a 100644 > --- a/crypto/asymmetric_keys/x509_cert_parser.c > +++ b/crypto/asymmetric_keys/x509_cert_parser.c > @@ -459,6 +459,7 @@ 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) { > @@ -470,7 +471,17 @@ 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)
Either a named constant, or at least a comment instead of just '2'. > + return -ENOPKG; > + > + oid = look_up_OID(ctx->params + 2, ctx->params_size - 2); > + switch (oid) { > + case OID_sm2: > + ctx->cert->pub->pkey_algo = "sm2"; > + break; > + default: > + return -ENOPKG; > + } > break; > default: > return -ENOPKG; /Jarkko