DeepCover Embedded Security in IoT: Public-key Secured Data Paths

Dependencies:   MaximInterface

The MAXREFDES155# is an internet-of-things (IoT) embedded-security reference design, built to authenticate and control a sensing node using elliptic-curve-based public-key cryptography with control and notification from a web server.

The hardware includes an ARM® mbed™ shield and attached sensor endpoint. The shield contains a DS2476 DeepCover® ECDSA/SHA-2 coprocessor, Wifi communication, LCD push-button controls, and status LEDs. The sensor endpoint is attached to the shield using a 300mm cable and contains a DS28C36 DeepCover ECDSA/SHA-2 authenticator, IR-thermal sensor, and aiming laser for the IR sensor. The MAXREFDES155# is equipped with a standard Arduino® form-factor shield connector for immediate testing using an mbed board such as the MAX32600MBED#. The combination of these two devices represent an IoT device. Communication to the web server is accomplished with the shield Wifi circuitry. Communication from the shield to the attached sensor module is accomplished over I2C . The sensor module represents an IoT endpoint that generates small data with a requirement for message authenticity/integrity and secure on/off operational control.

The design is hierarchical with each mbed platform and shield communicating data from the sensor node to a web server that maintains a centralized log and dispatches notifications as necessary. The simplicity of this design enables rapid integration into any star-topology IoT network to provide security with the low overhead and cost provided by the ECDSA-P256 asymmetric-key and SHA-256 symmetric-key algorithms.

More information about the MAXREFDES155# is available on the Maxim Integrated website.

Committer:
IanBenzMaxim
Date:
Tue Dec 03 12:56:25 2019 -0600
Revision:
18:c2631e985780
Parent:
16:a004191a79ab
Updated MaximInterface to version 2.1.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
IanBenzMaxim 0:33d4e66780c0 1 // Tencent is pleased to support the open source community by making RapidJSON available.
IanBenzMaxim 0:33d4e66780c0 2 //
IanBenzMaxim 0:33d4e66780c0 3 // Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
IanBenzMaxim 0:33d4e66780c0 4 //
IanBenzMaxim 0:33d4e66780c0 5 // Licensed under the MIT License (the "License"); you may not use this file except
IanBenzMaxim 0:33d4e66780c0 6 // in compliance with the License. You may obtain a copy of the License at
IanBenzMaxim 0:33d4e66780c0 7 //
IanBenzMaxim 0:33d4e66780c0 8 // http://opensource.org/licenses/MIT
IanBenzMaxim 0:33d4e66780c0 9 //
IanBenzMaxim 0:33d4e66780c0 10 // Unless required by applicable law or agreed to in writing, software distributed
IanBenzMaxim 0:33d4e66780c0 11 // under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
IanBenzMaxim 0:33d4e66780c0 12 // CONDITIONS OF ANY KIND, either express or implied. See the License for the
IanBenzMaxim 0:33d4e66780c0 13 // specific language governing permissions and limitations under the License.
IanBenzMaxim 0:33d4e66780c0 14
IanBenzMaxim 0:33d4e66780c0 15 #ifndef RAPIDJSON_ERROR_EN_H_
IanBenzMaxim 0:33d4e66780c0 16 #define RAPIDJSON_ERROR_EN_H_
IanBenzMaxim 0:33d4e66780c0 17
IanBenzMaxim 0:33d4e66780c0 18 #include "error.h"
IanBenzMaxim 0:33d4e66780c0 19
IanBenzMaxim 0:33d4e66780c0 20 #ifdef __clang__
IanBenzMaxim 0:33d4e66780c0 21 RAPIDJSON_DIAG_PUSH
IanBenzMaxim 0:33d4e66780c0 22 RAPIDJSON_DIAG_OFF(switch-enum)
IanBenzMaxim 0:33d4e66780c0 23 RAPIDJSON_DIAG_OFF(covered-switch-default)
IanBenzMaxim 0:33d4e66780c0 24 #endif
IanBenzMaxim 0:33d4e66780c0 25
IanBenzMaxim 0:33d4e66780c0 26 RAPIDJSON_NAMESPACE_BEGIN
IanBenzMaxim 0:33d4e66780c0 27
IanBenzMaxim 0:33d4e66780c0 28 //! Maps error code of parsing into error message.
IanBenzMaxim 0:33d4e66780c0 29 /*!
IanBenzMaxim 0:33d4e66780c0 30 \ingroup RAPIDJSON_ERRORS
IanBenzMaxim 0:33d4e66780c0 31 \param parseErrorCode Error code obtained in parsing.
IanBenzMaxim 0:33d4e66780c0 32 \return the error message.
IanBenzMaxim 0:33d4e66780c0 33 \note User can make a copy of this function for localization.
IanBenzMaxim 0:33d4e66780c0 34 Using switch-case is safer for future modification of error codes.
IanBenzMaxim 0:33d4e66780c0 35 */
IanBenzMaxim 0:33d4e66780c0 36 inline const RAPIDJSON_ERROR_CHARTYPE* GetParseError_En(ParseErrorCode parseErrorCode) {
IanBenzMaxim 0:33d4e66780c0 37 switch (parseErrorCode) {
IanBenzMaxim 0:33d4e66780c0 38 case kParseErrorNone: return RAPIDJSON_ERROR_STRING("No error.");
IanBenzMaxim 0:33d4e66780c0 39
IanBenzMaxim 0:33d4e66780c0 40 case kParseErrorDocumentEmpty: return RAPIDJSON_ERROR_STRING("The document is empty.");
IanBenzMaxim 0:33d4e66780c0 41 case kParseErrorDocumentRootNotSingular: return RAPIDJSON_ERROR_STRING("The document root must not be followed by other values.");
IanBenzMaxim 0:33d4e66780c0 42
IanBenzMaxim 0:33d4e66780c0 43 case kParseErrorValueInvalid: return RAPIDJSON_ERROR_STRING("Invalid value.");
IanBenzMaxim 0:33d4e66780c0 44
IanBenzMaxim 0:33d4e66780c0 45 case kParseErrorObjectMissName: return RAPIDJSON_ERROR_STRING("Missing a name for object member.");
IanBenzMaxim 0:33d4e66780c0 46 case kParseErrorObjectMissColon: return RAPIDJSON_ERROR_STRING("Missing a colon after a name of object member.");
IanBenzMaxim 0:33d4e66780c0 47 case kParseErrorObjectMissCommaOrCurlyBracket: return RAPIDJSON_ERROR_STRING("Missing a comma or '}' after an object member.");
IanBenzMaxim 0:33d4e66780c0 48
IanBenzMaxim 0:33d4e66780c0 49 case kParseErrorArrayMissCommaOrSquareBracket: return RAPIDJSON_ERROR_STRING("Missing a comma or ']' after an array element.");
IanBenzMaxim 0:33d4e66780c0 50
IanBenzMaxim 0:33d4e66780c0 51 case kParseErrorStringUnicodeEscapeInvalidHex: return RAPIDJSON_ERROR_STRING("Incorrect hex digit after \\u escape in string.");
IanBenzMaxim 0:33d4e66780c0 52 case kParseErrorStringUnicodeSurrogateInvalid: return RAPIDJSON_ERROR_STRING("The surrogate pair in string is invalid.");
IanBenzMaxim 0:33d4e66780c0 53 case kParseErrorStringEscapeInvalid: return RAPIDJSON_ERROR_STRING("Invalid escape character in string.");
IanBenzMaxim 0:33d4e66780c0 54 case kParseErrorStringMissQuotationMark: return RAPIDJSON_ERROR_STRING("Missing a closing quotation mark in string.");
IanBenzMaxim 0:33d4e66780c0 55 case kParseErrorStringInvalidEncoding: return RAPIDJSON_ERROR_STRING("Invalid encoding in string.");
IanBenzMaxim 0:33d4e66780c0 56
IanBenzMaxim 0:33d4e66780c0 57 case kParseErrorNumberTooBig: return RAPIDJSON_ERROR_STRING("Number too big to be stored in double.");
IanBenzMaxim 0:33d4e66780c0 58 case kParseErrorNumberMissFraction: return RAPIDJSON_ERROR_STRING("Miss fraction part in number.");
IanBenzMaxim 0:33d4e66780c0 59 case kParseErrorNumberMissExponent: return RAPIDJSON_ERROR_STRING("Miss exponent in number.");
IanBenzMaxim 0:33d4e66780c0 60
IanBenzMaxim 0:33d4e66780c0 61 case kParseErrorTermination: return RAPIDJSON_ERROR_STRING("Terminate parsing due to Handler error.");
IanBenzMaxim 0:33d4e66780c0 62 case kParseErrorUnspecificSyntaxError: return RAPIDJSON_ERROR_STRING("Unspecific syntax error.");
IanBenzMaxim 0:33d4e66780c0 63
IanBenzMaxim 0:33d4e66780c0 64 default: return RAPIDJSON_ERROR_STRING("Unknown error.");
IanBenzMaxim 0:33d4e66780c0 65 }
IanBenzMaxim 0:33d4e66780c0 66 }
IanBenzMaxim 0:33d4e66780c0 67
IanBenzMaxim 0:33d4e66780c0 68 RAPIDJSON_NAMESPACE_END
IanBenzMaxim 0:33d4e66780c0 69
IanBenzMaxim 0:33d4e66780c0 70 #ifdef __clang__
IanBenzMaxim 0:33d4e66780c0 71 RAPIDJSON_DIAG_POP
IanBenzMaxim 0:33d4e66780c0 72 #endif
IanBenzMaxim 0:33d4e66780c0 73
IanBenzMaxim 0:33d4e66780c0 74 #endif // RAPIDJSON_ERROR_EN_H_