Maxim Integrated / Mbed OS MAXREFDES155#

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.

xternal/rapidjson/internal/meta.h@18:c2631e985780, 2019-12-03 (annotated)

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_INTERNAL_META_H_
IanBenzMaxim 0:33d4e66780c0 16 #define RAPIDJSON_INTERNAL_META_H_
IanBenzMaxim 0:33d4e66780c0 17
IanBenzMaxim 0:33d4e66780c0 18 #include "../rapidjson.h"
IanBenzMaxim 0:33d4e66780c0 19
IanBenzMaxim 0:33d4e66780c0 20 #ifdef __GNUC__
IanBenzMaxim 0:33d4e66780c0 21 RAPIDJSON_DIAG_PUSH
IanBenzMaxim 0:33d4e66780c0 22 RAPIDJSON_DIAG_OFF(effc++)
IanBenzMaxim 0:33d4e66780c0 23 #endif
IanBenzMaxim 0:33d4e66780c0 24 #if defined(_MSC_VER)
IanBenzMaxim 0:33d4e66780c0 25 RAPIDJSON_DIAG_PUSH
IanBenzMaxim 0:33d4e66780c0 26 RAPIDJSON_DIAG_OFF(6334)
IanBenzMaxim 0:33d4e66780c0 27 #endif
IanBenzMaxim 0:33d4e66780c0 28
IanBenzMaxim 0:33d4e66780c0 29 #if RAPIDJSON_HAS_CXX11_TYPETRAITS
IanBenzMaxim 0:33d4e66780c0 30 #include <type_traits>
IanBenzMaxim 0:33d4e66780c0 31 #endif
IanBenzMaxim 0:33d4e66780c0 32
IanBenzMaxim 0:33d4e66780c0 33 //@cond RAPIDJSON_INTERNAL
IanBenzMaxim 0:33d4e66780c0 34 RAPIDJSON_NAMESPACE_BEGIN
IanBenzMaxim 0:33d4e66780c0 35 namespace internal {
IanBenzMaxim 0:33d4e66780c0 36
IanBenzMaxim 0:33d4e66780c0 37 // Helper to wrap/convert arbitrary types to void, useful for arbitrary type matching
IanBenzMaxim 0:33d4e66780c0 38 template <typename T> struct Void { typedef void Type; };
IanBenzMaxim 0:33d4e66780c0 39
IanBenzMaxim 0:33d4e66780c0 40 ///////////////////////////////////////////////////////////////////////////////
IanBenzMaxim 0:33d4e66780c0 41 // BoolType, TrueType, FalseType
IanBenzMaxim 0:33d4e66780c0 42 //
IanBenzMaxim 0:33d4e66780c0 43 template <bool Cond> struct BoolType {
IanBenzMaxim 0:33d4e66780c0 44 static const bool Value = Cond;
IanBenzMaxim 0:33d4e66780c0 45 typedef BoolType Type;
IanBenzMaxim 0:33d4e66780c0 46 };
IanBenzMaxim 0:33d4e66780c0 47 typedef BoolType<true> TrueType;
IanBenzMaxim 0:33d4e66780c0 48 typedef BoolType<false> FalseType;
IanBenzMaxim 0:33d4e66780c0 49
IanBenzMaxim 0:33d4e66780c0 50
IanBenzMaxim 0:33d4e66780c0 51 ///////////////////////////////////////////////////////////////////////////////
IanBenzMaxim 0:33d4e66780c0 52 // SelectIf, BoolExpr, NotExpr, AndExpr, OrExpr
IanBenzMaxim 0:33d4e66780c0 53 //
IanBenzMaxim 0:33d4e66780c0 54
IanBenzMaxim 0:33d4e66780c0 55 template <bool C> struct SelectIfImpl { template <typename T1, typename T2> struct Apply { typedef T1 Type; }; };
IanBenzMaxim 0:33d4e66780c0 56 template <> struct SelectIfImpl<false> { template <typename T1, typename T2> struct Apply { typedef T2 Type; }; };
IanBenzMaxim 0:33d4e66780c0 57 template <bool C, typename T1, typename T2> struct SelectIfCond : SelectIfImpl<C>::template Apply<T1,T2> {};
IanBenzMaxim 0:33d4e66780c0 58 template <typename C, typename T1, typename T2> struct SelectIf : SelectIfCond<C::Value, T1, T2> {};
IanBenzMaxim 0:33d4e66780c0 59
IanBenzMaxim 0:33d4e66780c0 60 template <bool Cond1, bool Cond2> struct AndExprCond : FalseType {};
IanBenzMaxim 0:33d4e66780c0 61 template <> struct AndExprCond<true, true> : TrueType {};
IanBenzMaxim 0:33d4e66780c0 62 template <bool Cond1, bool Cond2> struct OrExprCond : TrueType {};
IanBenzMaxim 0:33d4e66780c0 63 template <> struct OrExprCond<false, false> : FalseType {};
IanBenzMaxim 0:33d4e66780c0 64
IanBenzMaxim 0:33d4e66780c0 65 template <typename C> struct BoolExpr : SelectIf<C,TrueType,FalseType>::Type {};
IanBenzMaxim 0:33d4e66780c0 66 template <typename C> struct NotExpr : SelectIf<C,FalseType,TrueType>::Type {};
IanBenzMaxim 0:33d4e66780c0 67 template <typename C1, typename C2> struct AndExpr : AndExprCond<C1::Value, C2::Value>::Type {};
IanBenzMaxim 0:33d4e66780c0 68 template <typename C1, typename C2> struct OrExpr : OrExprCond<C1::Value, C2::Value>::Type {};
IanBenzMaxim 0:33d4e66780c0 69
IanBenzMaxim 0:33d4e66780c0 70
IanBenzMaxim 0:33d4e66780c0 71 ///////////////////////////////////////////////////////////////////////////////
IanBenzMaxim 0:33d4e66780c0 72 // AddConst, MaybeAddConst, RemoveConst
IanBenzMaxim 0:33d4e66780c0 73 template <typename T> struct AddConst { typedef const T Type; };
IanBenzMaxim 0:33d4e66780c0 74 template <bool Constify, typename T> struct MaybeAddConst : SelectIfCond<Constify, const T, T> {};
IanBenzMaxim 0:33d4e66780c0 75 template <typename T> struct RemoveConst { typedef T Type; };
IanBenzMaxim 0:33d4e66780c0 76 template <typename T> struct RemoveConst<const T> { typedef T Type; };
IanBenzMaxim 0:33d4e66780c0 77
IanBenzMaxim 0:33d4e66780c0 78
IanBenzMaxim 0:33d4e66780c0 79 ///////////////////////////////////////////////////////////////////////////////
IanBenzMaxim 0:33d4e66780c0 80 // IsSame, IsConst, IsMoreConst, IsPointer
IanBenzMaxim 0:33d4e66780c0 81 //
IanBenzMaxim 0:33d4e66780c0 82 template <typename T, typename U> struct IsSame : FalseType {};
IanBenzMaxim 0:33d4e66780c0 83 template <typename T> struct IsSame<T, T> : TrueType {};
IanBenzMaxim 0:33d4e66780c0 84
IanBenzMaxim 0:33d4e66780c0 85 template <typename T> struct IsConst : FalseType {};
IanBenzMaxim 0:33d4e66780c0 86 template <typename T> struct IsConst<const T> : TrueType {};
IanBenzMaxim 0:33d4e66780c0 87
IanBenzMaxim 0:33d4e66780c0 88 template <typename CT, typename T>
IanBenzMaxim 0:33d4e66780c0 89 struct IsMoreConst
IanBenzMaxim 0:33d4e66780c0 90 : AndExpr<IsSame<typename RemoveConst<CT>::Type, typename RemoveConst<T>::Type>,
IanBenzMaxim 0:33d4e66780c0 91 BoolType<IsConst<CT>::Value >= IsConst<T>::Value> >::Type {};
IanBenzMaxim 0:33d4e66780c0 92
IanBenzMaxim 0:33d4e66780c0 93 template <typename T> struct IsPointer : FalseType {};
IanBenzMaxim 0:33d4e66780c0 94 template <typename T> struct IsPointer<T*> : TrueType {};
IanBenzMaxim 0:33d4e66780c0 95
IanBenzMaxim 0:33d4e66780c0 96 ///////////////////////////////////////////////////////////////////////////////
IanBenzMaxim 0:33d4e66780c0 97 // IsBaseOf
IanBenzMaxim 0:33d4e66780c0 98 //
IanBenzMaxim 0:33d4e66780c0 99 #if RAPIDJSON_HAS_CXX11_TYPETRAITS
IanBenzMaxim 0:33d4e66780c0 100
IanBenzMaxim 0:33d4e66780c0 101 template <typename B, typename D> struct IsBaseOf
IanBenzMaxim 0:33d4e66780c0 102 : BoolType< ::std::is_base_of<B,D>::value> {};
IanBenzMaxim 0:33d4e66780c0 103
IanBenzMaxim 0:33d4e66780c0 104 #else // simplified version adopted from Boost
IanBenzMaxim 0:33d4e66780c0 105
IanBenzMaxim 0:33d4e66780c0 106 template<typename B, typename D> struct IsBaseOfImpl {
IanBenzMaxim 0:33d4e66780c0 107 RAPIDJSON_STATIC_ASSERT(sizeof(B) != 0);
IanBenzMaxim 0:33d4e66780c0 108 RAPIDJSON_STATIC_ASSERT(sizeof(D) != 0);
IanBenzMaxim 0:33d4e66780c0 109
IanBenzMaxim 0:33d4e66780c0 110 typedef char (&Yes)[1];
IanBenzMaxim 0:33d4e66780c0 111 typedef char (&No) [2];
IanBenzMaxim 0:33d4e66780c0 112
IanBenzMaxim 0:33d4e66780c0 113 template <typename T>
IanBenzMaxim 0:33d4e66780c0 114 static Yes Check(const D*, T);
IanBenzMaxim 0:33d4e66780c0 115 static No Check(const B*, int);
IanBenzMaxim 0:33d4e66780c0 116
IanBenzMaxim 0:33d4e66780c0 117 struct Host {
IanBenzMaxim 0:33d4e66780c0 118 operator const B*() const;
IanBenzMaxim 0:33d4e66780c0 119 operator const D*();
IanBenzMaxim 0:33d4e66780c0 120 };
IanBenzMaxim 0:33d4e66780c0 121
IanBenzMaxim 0:33d4e66780c0 122 enum { Value = (sizeof(Check(Host(), 0)) == sizeof(Yes)) };
IanBenzMaxim 0:33d4e66780c0 123 };
IanBenzMaxim 0:33d4e66780c0 124
IanBenzMaxim 0:33d4e66780c0 125 template <typename B, typename D> struct IsBaseOf
IanBenzMaxim 0:33d4e66780c0 126 : OrExpr<IsSame<B, D>, BoolExpr<IsBaseOfImpl<B, D> > >::Type {};
IanBenzMaxim 0:33d4e66780c0 127
IanBenzMaxim 0:33d4e66780c0 128 #endif // RAPIDJSON_HAS_CXX11_TYPETRAITS
IanBenzMaxim 0:33d4e66780c0 129
IanBenzMaxim 0:33d4e66780c0 130
IanBenzMaxim 0:33d4e66780c0 131 //////////////////////////////////////////////////////////////////////////
IanBenzMaxim 0:33d4e66780c0 132 // EnableIf / DisableIf
IanBenzMaxim 0:33d4e66780c0 133 //
IanBenzMaxim 0:33d4e66780c0 134 template <bool Condition, typename T = void> struct EnableIfCond { typedef T Type; };
IanBenzMaxim 0:33d4e66780c0 135 template <typename T> struct EnableIfCond<false, T> { /* empty */ };
IanBenzMaxim 0:33d4e66780c0 136
IanBenzMaxim 0:33d4e66780c0 137 template <bool Condition, typename T = void> struct DisableIfCond { typedef T Type; };
IanBenzMaxim 0:33d4e66780c0 138 template <typename T> struct DisableIfCond<true, T> { /* empty */ };
IanBenzMaxim 0:33d4e66780c0 139
IanBenzMaxim 0:33d4e66780c0 140 template <typename Condition, typename T = void>
IanBenzMaxim 0:33d4e66780c0 141 struct EnableIf : EnableIfCond<Condition::Value, T> {};
IanBenzMaxim 0:33d4e66780c0 142
IanBenzMaxim 0:33d4e66780c0 143 template <typename Condition, typename T = void>
IanBenzMaxim 0:33d4e66780c0 144 struct DisableIf : DisableIfCond<Condition::Value, T> {};
IanBenzMaxim 0:33d4e66780c0 145
IanBenzMaxim 0:33d4e66780c0 146 // SFINAE helpers
IanBenzMaxim 0:33d4e66780c0 147 struct SfinaeTag {};
IanBenzMaxim 0:33d4e66780c0 148 template <typename T> struct RemoveSfinaeTag;
IanBenzMaxim 0:33d4e66780c0 149 template <typename T> struct RemoveSfinaeTag<SfinaeTag&(*)(T)> { typedef T Type; };
IanBenzMaxim 0:33d4e66780c0 150
IanBenzMaxim 0:33d4e66780c0 151 #define RAPIDJSON_REMOVEFPTR_(type) \
IanBenzMaxim 0:33d4e66780c0 152 typename ::RAPIDJSON_NAMESPACE::internal::RemoveSfinaeTag \
IanBenzMaxim 0:33d4e66780c0 153 < ::RAPIDJSON_NAMESPACE::internal::SfinaeTag&(*) type>::Type
IanBenzMaxim 0:33d4e66780c0 154
IanBenzMaxim 0:33d4e66780c0 155 #define RAPIDJSON_ENABLEIF(cond) \
IanBenzMaxim 0:33d4e66780c0 156 typename ::RAPIDJSON_NAMESPACE::internal::EnableIf \
IanBenzMaxim 0:33d4e66780c0 157 <RAPIDJSON_REMOVEFPTR_(cond)>::Type * = NULL
IanBenzMaxim 0:33d4e66780c0 158
IanBenzMaxim 0:33d4e66780c0 159 #define RAPIDJSON_DISABLEIF(cond) \
IanBenzMaxim 0:33d4e66780c0 160 typename ::RAPIDJSON_NAMESPACE::internal::DisableIf \
IanBenzMaxim 0:33d4e66780c0 161 <RAPIDJSON_REMOVEFPTR_(cond)>::Type * = NULL
IanBenzMaxim 0:33d4e66780c0 162
IanBenzMaxim 0:33d4e66780c0 163 #define RAPIDJSON_ENABLEIF_RETURN(cond,returntype) \
IanBenzMaxim 0:33d4e66780c0 164 typename ::RAPIDJSON_NAMESPACE::internal::EnableIf \
IanBenzMaxim 0:33d4e66780c0 165 <RAPIDJSON_REMOVEFPTR_(cond), \
IanBenzMaxim 0:33d4e66780c0 166 RAPIDJSON_REMOVEFPTR_(returntype)>::Type
IanBenzMaxim 0:33d4e66780c0 167
IanBenzMaxim 0:33d4e66780c0 168 #define RAPIDJSON_DISABLEIF_RETURN(cond,returntype) \
IanBenzMaxim 0:33d4e66780c0 169 typename ::RAPIDJSON_NAMESPACE::internal::DisableIf \
IanBenzMaxim 0:33d4e66780c0 170 <RAPIDJSON_REMOVEFPTR_(cond), \
IanBenzMaxim 0:33d4e66780c0 171 RAPIDJSON_REMOVEFPTR_(returntype)>::Type
IanBenzMaxim 0:33d4e66780c0 172
IanBenzMaxim 0:33d4e66780c0 173 } // namespace internal
IanBenzMaxim 0:33d4e66780c0 174 RAPIDJSON_NAMESPACE_END
IanBenzMaxim 0:33d4e66780c0 175 //@endcond
IanBenzMaxim 0:33d4e66780c0 176
IanBenzMaxim 0:33d4e66780c0 177 #if defined(__GNUC__) || defined(_MSC_VER)
IanBenzMaxim 0:33d4e66780c0 178 RAPIDJSON_DIAG_POP
IanBenzMaxim 0:33d4e66780c0 179 #endif
IanBenzMaxim 0:33d4e66780c0 180
IanBenzMaxim 0:33d4e66780c0 181 #endif // RAPIDJSON_INTERNAL_META_H_