Pfp Cybersecurity (Aka Power Fingerprinting, Inc.) / Mbed OS pfp-emon-nxp

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Dependencies:   FXAS21002 FXOS8700Q

simple-mbed-cloud-client/mbed-cloud-client/source/CertificateParser.c@2:990c985a69ae, 2020-03-20 (annotated)

Committer:
vithyat
Date:
Fri Mar 20 20:15:18 2020 +0000
Revision:
2:990c985a69ae
Parent:
0:977e87915078 
Update to work with P2Scan runtime

Who changed what in which revision?

UserRevisionLine numberNew contents of line
vithyat 0:977e87915078 1 // ----------------------------------------------------------------------------
vithyat 0:977e87915078 2 // Copyright 2016-2017 ARM Ltd.
vithyat 0:977e87915078 3 //
vithyat 0:977e87915078 4 // SPDX-License-Identifier: Apache-2.0
vithyat 0:977e87915078 5 //
vithyat 0:977e87915078 6 // Licensed under the Apache License, Version 2.0 (the "License");
vithyat 0:977e87915078 7 // you may not use this file except in compliance with the License.
vithyat 0:977e87915078 8 // You may obtain a copy of the License at
vithyat 0:977e87915078 9 //
vithyat 0:977e87915078 10 // http://www.apache.org/licenses/LICENSE-2.0
vithyat 0:977e87915078 11 //
vithyat 0:977e87915078 12 // Unless required by applicable law or agreed to in writing, software
vithyat 0:977e87915078 13 // distributed under the License is distributed on an "AS IS" BASIS,
vithyat 0:977e87915078 14 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
vithyat 0:977e87915078 15 // See the License for the specific language governing permissions and
vithyat 0:977e87915078 16 // limitations under the License.
vithyat 0:977e87915078 17 // ----------------------------------------------------------------------------
vithyat 0:977e87915078 18
vithyat 0:977e87915078 19 #include <stdint.h>
vithyat 0:977e87915078 20 #include "pal.h"
vithyat 0:977e87915078 21 #include "mbed-trace/mbed_trace.h"
vithyat 0:977e87915078 22
vithyat 0:977e87915078 23 #define TRACE_GROUP "mClt"
vithyat 0:977e87915078 24
vithyat 0:977e87915078 25 bool extract_field_from_certificate(const uint8_t* cer, size_t cer_len, const char *field, char* value)
vithyat 0:977e87915078 26 {
vithyat 0:977e87915078 27 #if 1 // TODO : Uncomment once PAL has feature to extract "L" from certificate
vithyat 0:977e87915078 28 tr_debug("extract_field_from_certificate");
vithyat 0:977e87915078 29
vithyat 0:977e87915078 30 palX509Attr_t attr = PAL_X509_L_ATTR;
vithyat 0:977e87915078 31 if (strcmp(field,"CN") == 0) {
vithyat 0:977e87915078 32 attr = PAL_X509_CN_ATTR;
vithyat 0:977e87915078 33 } else if (strcmp(field,"L") == 0) {
vithyat 0:977e87915078 34 attr = PAL_X509_L_ATTR;
vithyat 0:977e87915078 35 } else {
vithyat 0:977e87915078 36 return false;
vithyat 0:977e87915078 37 }
vithyat 0:977e87915078 38
vithyat 0:977e87915078 39 palX509Handle_t cert = 0;
vithyat 0:977e87915078 40 size_t len = 0;
vithyat 0:977e87915078 41 palStatus_t ret = pal_x509Initiate(&cert);
vithyat 0:977e87915078 42 if (ret != PAL_SUCCESS) {
vithyat 0:977e87915078 43 tr_error("extract_field_from_certificate - cert init failed: %d", (int)ret);
vithyat 0:977e87915078 44 pal_x509Free(&cert);
vithyat 0:977e87915078 45 return false;
vithyat 0:977e87915078 46 }
vithyat 0:977e87915078 47 ret = pal_x509CertParse(cert, cer, cer_len);
vithyat 0:977e87915078 48 if (ret != PAL_SUCCESS) {
vithyat 0:977e87915078 49 tr_error("extract_field_from_certificate - cert parse failed: %d", (int)ret);
vithyat 0:977e87915078 50 pal_x509Free(&cert);
vithyat 0:977e87915078 51 return false;
vithyat 0:977e87915078 52 }
vithyat 0:977e87915078 53 ret = pal_x509CertGetAttribute(cert, attr, value, 64, &len);
vithyat 0:977e87915078 54 if (ret != PAL_SUCCESS) {
vithyat 0:977e87915078 55 tr_error("extract_field_from_certificate - cert attr get failed: %d", (int)ret);
vithyat 0:977e87915078 56 pal_x509Free(&cert);
vithyat 0:977e87915078 57 return false;
vithyat 0:977e87915078 58 }
vithyat 0:977e87915078 59 pal_x509Free(&cert);
vithyat 0:977e87915078 60 return true;
vithyat 0:977e87915078 61 #else
vithyat 0:977e87915078 62 return false;
vithyat 0:977e87915078 63 #endif
vithyat 0:977e87915078 64 }
vithyat 0:977e87915078 65
vithyat 0:977e87915078 66