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.

Factory.cpp@15:75404fab3615, 2018-01-19 (annotated)

Committer:
IanBenzMaxim
Date:
Fri Jan 19 10:28:27 2018 -0600
Revision:
15:75404fab3615
Parent:
14:dc839a69379b 
Updated MaximInterface revision.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
IanBenzMaxim 0:33d4e66780c0 1 /*******************************************************************************
IanBenzMaxim 0:33d4e66780c0 2 * Copyright (C) 2017 Maxim Integrated Products, Inc., All Rights Reserved.
IanBenzMaxim 0:33d4e66780c0 3 *
IanBenzMaxim 0:33d4e66780c0 4 * Permission is hereby granted, free of charge, to any person obtaining a
IanBenzMaxim 0:33d4e66780c0 5 * copy of this software and associated documentation files (the "Software"),
IanBenzMaxim 0:33d4e66780c0 6 * to deal in the Software without restriction, including without limitation
IanBenzMaxim 0:33d4e66780c0 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
IanBenzMaxim 0:33d4e66780c0 8 * and/or sell copies of the Software, and to permit persons to whom the
IanBenzMaxim 0:33d4e66780c0 9 * Software is furnished to do so, subject to the following conditions:
IanBenzMaxim 0:33d4e66780c0 10 *
IanBenzMaxim 0:33d4e66780c0 11 * The above copyright notice and this permission notice shall be included
IanBenzMaxim 0:33d4e66780c0 12 * in all copies or substantial portions of the Software.
IanBenzMaxim 0:33d4e66780c0 13 *
IanBenzMaxim 0:33d4e66780c0 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
IanBenzMaxim 0:33d4e66780c0 15 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
IanBenzMaxim 0:33d4e66780c0 16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IanBenzMaxim 0:33d4e66780c0 17 * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
IanBenzMaxim 0:33d4e66780c0 18 * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
IanBenzMaxim 0:33d4e66780c0 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
IanBenzMaxim 0:33d4e66780c0 20 * OTHER DEALINGS IN THE SOFTWARE.
IanBenzMaxim 0:33d4e66780c0 21 *
IanBenzMaxim 0:33d4e66780c0 22 * Except as contained in this notice, the name of Maxim Integrated
IanBenzMaxim 0:33d4e66780c0 23 * Products, Inc. shall not be used except as stated in the Maxim Integrated
IanBenzMaxim 0:33d4e66780c0 24 * Products, Inc. Branding Policy.
IanBenzMaxim 0:33d4e66780c0 25 *
IanBenzMaxim 0:33d4e66780c0 26 * The mere transfer of this software does not imply any licenses
IanBenzMaxim 0:33d4e66780c0 27 * of trade secrets, proprietary technology, copyrights, patents,
IanBenzMaxim 0:33d4e66780c0 28 * trademarks, maskwork rights, or any other form of intellectual
IanBenzMaxim 0:33d4e66780c0 29 * property whatsoever. Maxim Integrated Products, Inc. retains all
IanBenzMaxim 0:33d4e66780c0 30 * ownership rights.
IanBenzMaxim 0:33d4e66780c0 31 *******************************************************************************/
IanBenzMaxim 0:33d4e66780c0 32
IanBenzMaxim 13:6a6225690c2e 33 #include <MaximInterface/Devices/DS28C36_DS2476.hpp>
IanBenzMaxim 0:33d4e66780c0 34 #include "SensorNode.hpp"
IanBenzMaxim 0:33d4e66780c0 35 #include "Factory.hpp"
IanBenzMaxim 0:33d4e66780c0 36
IanBenzMaxim 13:6a6225690c2e 37 using namespace MaximInterface;
IanBenzMaxim 13:6a6225690c2e 38
IanBenzMaxim 0:33d4e66780c0 39 // Authority (web server) public key x-component.
IanBenzMaxim 0:33d4e66780c0 40 static const DS28C36::Page authPublicKeyX = {
IanBenzMaxim 13:6a6225690c2e 41 0x7A, 0xB9, 0xCD, 0x00, 0x3F, 0x42, 0xF3, 0x30, 0x76, 0x25, 0x9B,
IanBenzMaxim 13:6a6225690c2e 42 0x6B, 0xFD, 0xC2, 0x6D, 0xE2, 0xDB, 0x59, 0xA8, 0xD9, 0xE0, 0x68,
IanBenzMaxim 13:6a6225690c2e 43 0x3E, 0x1B, 0xFF, 0x50, 0xCB, 0x6C, 0x18, 0xB6, 0xF2, 0xEB};
IanBenzMaxim 0:33d4e66780c0 44
IanBenzMaxim 0:33d4e66780c0 45 // Authority (web server) public key y-component.
IanBenzMaxim 0:33d4e66780c0 46 static const DS28C36::Page authPublicKeyY = {
IanBenzMaxim 13:6a6225690c2e 47 0x7F, 0xFC, 0xEE, 0xDD, 0x77, 0xE9, 0x63, 0x07, 0x62, 0x37, 0x33,
IanBenzMaxim 13:6a6225690c2e 48 0x81, 0x17, 0x16, 0x58, 0x75, 0x12, 0x88, 0x85, 0x58, 0x57, 0xC0,
IanBenzMaxim 13:6a6225690c2e 49 0x15, 0xB8, 0x08, 0xDE, 0xB2, 0x3B, 0xD7, 0x8A, 0x9D, 0x2C};
IanBenzMaxim 0:33d4e66780c0 50
IanBenzMaxim 0:33d4e66780c0 51 // Authority (web server) private key.
IanBenzMaxim 0:33d4e66780c0 52 static const DS28C36::Page authPrivateKey = {
IanBenzMaxim 13:6a6225690c2e 53 0xC5, 0x45, 0x5F, 0xFB, 0x45, 0xEA, 0x77, 0x0B, 0xF1, 0x1B, 0xE5,
IanBenzMaxim 13:6a6225690c2e 54 0xD2, 0x21, 0xAD, 0x35, 0xF5, 0x0B, 0x61, 0x7F, 0x66, 0xDB, 0xA0,
IanBenzMaxim 13:6a6225690c2e 55 0xBD, 0xB6, 0x64, 0x75, 0x21, 0x4E, 0xB0, 0x98, 0x2D, 0x8E};
IanBenzMaxim 0:33d4e66780c0 56
IanBenzMaxim 0:33d4e66780c0 57 // Master secret for SHA-256 HMAC authentication.
IanBenzMaxim 0:33d4e66780c0 58 static const DS28C36::Page masterSecret = {
IanBenzMaxim 13:6a6225690c2e 59 0x6D, 0x52, 0xB6, 0x15, 0xDC, 0x80, 0xCF, 0xB1, 0x25, 0xB0, 0x76,
IanBenzMaxim 13:6a6225690c2e 60 0xB7, 0x7C, 0xAC, 0x00, 0xF2, 0xBC, 0x19, 0xBE, 0xD3, 0x2F, 0x9D,
IanBenzMaxim 13:6a6225690c2e 61 0xC1, 0x42, 0x2A, 0xA5, 0xF6, 0xAE, 0x71, 0xF2, 0x25, 0xB6};
IanBenzMaxim 0:33d4e66780c0 62
IanBenzMaxim 13:6a6225690c2e 63 error_code provisionAuthenticator(DS28C36 & ds28c36) {
IanBenzMaxim 13:6a6225690c2e 64 const DS28C36::Page zeroPage = {};
IanBenzMaxim 13:6a6225690c2e 65 error_code result;
IanBenzMaxim 13:6a6225690c2e 66 // Page 0 - 15
IanBenzMaxim 13:6a6225690c2e 67 for (int pageNum = DS28C36::UserData0; pageNum <= DS28C36::UserData15;
IanBenzMaxim 13:6a6225690c2e 68 pageNum++) {
IanBenzMaxim 13:6a6225690c2e 69 result = ds28c36.writeMemory(pageNum, zeroPage);
IanBenzMaxim 13:6a6225690c2e 70 if (result)
IanBenzMaxim 13:6a6225690c2e 71 return result;
IanBenzMaxim 13:6a6225690c2e 72 }
IanBenzMaxim 13:6a6225690c2e 73 // Page 16, 17, 22
IanBenzMaxim 13:6a6225690c2e 74 DS28C36::Page page;
IanBenzMaxim 14:dc839a69379b 75 result = ds28c36.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 76 if (result)
IanBenzMaxim 13:6a6225690c2e 77 return result;
IanBenzMaxim 13:6a6225690c2e 78 result = ds28c36.writeMemory(DS28C36::PublicKeyAX, page);
IanBenzMaxim 13:6a6225690c2e 79 if (result)
IanBenzMaxim 13:6a6225690c2e 80 return result;
IanBenzMaxim 14:dc839a69379b 81 result = ds28c36.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 82 if (result)
IanBenzMaxim 13:6a6225690c2e 83 return result;
IanBenzMaxim 13:6a6225690c2e 84 result = ds28c36.writeMemory(DS28C36::PublicKeyAY, page);
IanBenzMaxim 13:6a6225690c2e 85 if (result)
IanBenzMaxim 13:6a6225690c2e 86 return result;
IanBenzMaxim 14:dc839a69379b 87 result = ds28c36.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 88 if (result)
IanBenzMaxim 13:6a6225690c2e 89 return result;
IanBenzMaxim 13:6a6225690c2e 90 result = ds28c36.writeMemory(DS28C36::PrivateKeyA, page);
IanBenzMaxim 13:6a6225690c2e 91 if (result)
IanBenzMaxim 13:6a6225690c2e 92 return result;
IanBenzMaxim 13:6a6225690c2e 93 // Page 18, 19, 23
IanBenzMaxim 14:dc839a69379b 94 result = ds28c36.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 95 if (result)
IanBenzMaxim 13:6a6225690c2e 96 return result;
IanBenzMaxim 13:6a6225690c2e 97 result = ds28c36.writeMemory(DS28C36::PublicKeyBX, page);
IanBenzMaxim 13:6a6225690c2e 98 if (result)
IanBenzMaxim 13:6a6225690c2e 99 return result;
IanBenzMaxim 14:dc839a69379b 100 result = ds28c36.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 101 if (result)
IanBenzMaxim 13:6a6225690c2e 102 return result;
IanBenzMaxim 13:6a6225690c2e 103 result = ds28c36.writeMemory(DS28C36::PublicKeyBY, page);
IanBenzMaxim 13:6a6225690c2e 104 if (result)
IanBenzMaxim 13:6a6225690c2e 105 return result;
IanBenzMaxim 14:dc839a69379b 106 result = ds28c36.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 107 if (result)
IanBenzMaxim 13:6a6225690c2e 108 return result;
IanBenzMaxim 13:6a6225690c2e 109 result = ds28c36.writeMemory(DS28C36::PrivateKeyB, page);
IanBenzMaxim 13:6a6225690c2e 110 if (result)
IanBenzMaxim 13:6a6225690c2e 111 return result;
IanBenzMaxim 13:6a6225690c2e 112 // Page 20, 21, 24
IanBenzMaxim 14:dc839a69379b 113 result = ds28c36.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 114 if (result)
IanBenzMaxim 13:6a6225690c2e 115 return result;
IanBenzMaxim 13:6a6225690c2e 116 result = ds28c36.writeMemory(DS28C36::PublicKeyCX, page);
IanBenzMaxim 13:6a6225690c2e 117 if (result)
IanBenzMaxim 13:6a6225690c2e 118 return result;
IanBenzMaxim 14:dc839a69379b 119 result = ds28c36.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 120 if (result)
IanBenzMaxim 13:6a6225690c2e 121 return result;
IanBenzMaxim 13:6a6225690c2e 122 result = ds28c36.writeMemory(DS28C36::PublicKeyCY, page);
IanBenzMaxim 13:6a6225690c2e 123 if (result)
IanBenzMaxim 13:6a6225690c2e 124 return result;
IanBenzMaxim 14:dc839a69379b 125 result = ds28c36.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 126 if (result)
IanBenzMaxim 13:6a6225690c2e 127 return result;
IanBenzMaxim 13:6a6225690c2e 128 result = ds28c36.writeMemory(DS28C36::PrivateKeyC, page);
IanBenzMaxim 13:6a6225690c2e 129 if (result)
IanBenzMaxim 13:6a6225690c2e 130 return result;
IanBenzMaxim 13:6a6225690c2e 131 // Page 25
IanBenzMaxim 13:6a6225690c2e 132 result = ds28c36.writeMemory(DS28C36::SecretA, masterSecret);
IanBenzMaxim 13:6a6225690c2e 133 if (result)
IanBenzMaxim 13:6a6225690c2e 134 return result;
IanBenzMaxim 13:6a6225690c2e 135 result = ds28c36.writeBuffer(zeroPage.data(), zeroPage.size());
IanBenzMaxim 13:6a6225690c2e 136 if (result)
IanBenzMaxim 13:6a6225690c2e 137 return result;
IanBenzMaxim 13:6a6225690c2e 138 result = ds28c36.computeAndLockSha2Secret(
IanBenzMaxim 13:6a6225690c2e 139 DS28C36::UserData0, DS28C36::SecretNumA, DS28C36::SecretNumA, false);
IanBenzMaxim 13:6a6225690c2e 140 if (result)
IanBenzMaxim 13:6a6225690c2e 141 return result;
IanBenzMaxim 13:6a6225690c2e 142 // Page 26
IanBenzMaxim 14:dc839a69379b 143 result = ds28c36.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 144 if (result)
IanBenzMaxim 13:6a6225690c2e 145 return result;
IanBenzMaxim 13:6a6225690c2e 146 result = ds28c36.writeMemory(DS28C36::SecretB, page);
IanBenzMaxim 13:6a6225690c2e 147 if (result)
IanBenzMaxim 13:6a6225690c2e 148 return result;
IanBenzMaxim 13:6a6225690c2e 149 // Page 28
IanBenzMaxim 13:6a6225690c2e 150 result = ds28c36.setPageProtection(DS28C36::RomOptions, DS28C36::APH);
IanBenzMaxim 13:6a6225690c2e 151 if (result)
IanBenzMaxim 13:6a6225690c2e 152 return result;
IanBenzMaxim 13:6a6225690c2e 153 // Page 29
IanBenzMaxim 13:6a6225690c2e 154 result = ds28c36.setPageProtection(DS28C36::GpioControl, DS28C36::APH);
IanBenzMaxim 13:6a6225690c2e 155 return result;
IanBenzMaxim 0:33d4e66780c0 156 }
IanBenzMaxim 0:33d4e66780c0 157
IanBenzMaxim 13:6a6225690c2e 158 error_code provisionCoprocessor(DS2476 & ds2476) {
IanBenzMaxim 13:6a6225690c2e 159 // Page 0, 1
IanBenzMaxim 13:6a6225690c2e 160 const DS2476::Page zeroPage = {};
IanBenzMaxim 13:6a6225690c2e 161 error_code result = ds2476.writeMemory(DS2476::UserData0, zeroPage);
IanBenzMaxim 13:6a6225690c2e 162 if (result)
IanBenzMaxim 13:6a6225690c2e 163 return result;
IanBenzMaxim 13:6a6225690c2e 164 result = ds2476.writeMemory(DS2476::UserData1, zeroPage);
IanBenzMaxim 13:6a6225690c2e 165 if (result)
IanBenzMaxim 13:6a6225690c2e 166 return result;
IanBenzMaxim 13:6a6225690c2e 167 // Page 2 - 13
IanBenzMaxim 13:6a6225690c2e 168 DS2476::Page page;
IanBenzMaxim 13:6a6225690c2e 169 for (int pageNum = DS2476::UserData2; pageNum <= DS2476::UserData13;
IanBenzMaxim 13:6a6225690c2e 170 pageNum++) {
IanBenzMaxim 14:dc839a69379b 171 result = ds2476.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 172 if (result)
IanBenzMaxim 13:6a6225690c2e 173 return result;
IanBenzMaxim 13:6a6225690c2e 174 result = ds2476.writeMemory(pageNum, page);
IanBenzMaxim 13:6a6225690c2e 175 if (result)
IanBenzMaxim 13:6a6225690c2e 176 return result;
IanBenzMaxim 13:6a6225690c2e 177 }
IanBenzMaxim 13:6a6225690c2e 178 // Page 16, 17, 22
IanBenzMaxim 13:6a6225690c2e 179 result = ds2476.generateEcc256KeyPair(DS2476::KeyNumA, false);
IanBenzMaxim 13:6a6225690c2e 180 if (result)
IanBenzMaxim 13:6a6225690c2e 181 return result;
IanBenzMaxim 13:6a6225690c2e 182 // Page 18, 19, 23
IanBenzMaxim 14:dc839a69379b 183 result = ds2476.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 184 if (result)
IanBenzMaxim 13:6a6225690c2e 185 return result;
IanBenzMaxim 13:6a6225690c2e 186 result = ds2476.writeMemory(DS2476::PublicKeyBX, page);
IanBenzMaxim 13:6a6225690c2e 187 if (result)
IanBenzMaxim 13:6a6225690c2e 188 return result;
IanBenzMaxim 14:dc839a69379b 189 result = ds2476.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 190 if (result)
IanBenzMaxim 13:6a6225690c2e 191 return result;
IanBenzMaxim 13:6a6225690c2e 192 result = ds2476.writeMemory(DS2476::PublicKeyBY, page);
IanBenzMaxim 13:6a6225690c2e 193 if (result)
IanBenzMaxim 13:6a6225690c2e 194 return result;
IanBenzMaxim 14:dc839a69379b 195 result = ds2476.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 196 if (result)
IanBenzMaxim 13:6a6225690c2e 197 return result;
IanBenzMaxim 13:6a6225690c2e 198 result = ds2476.writeMemory(DS2476::PrivateKeyB, page);
IanBenzMaxim 13:6a6225690c2e 199 if (result)
IanBenzMaxim 13:6a6225690c2e 200 return result;
IanBenzMaxim 13:6a6225690c2e 201 // Page 20, 21, 24
IanBenzMaxim 13:6a6225690c2e 202 result = ds2476.writeMemory(DS2476::PublicKeyCX, authPublicKeyX);
IanBenzMaxim 13:6a6225690c2e 203 if (result)
IanBenzMaxim 13:6a6225690c2e 204 return result;
IanBenzMaxim 13:6a6225690c2e 205 result = ds2476.writeMemory(DS2476::PublicKeyCY, authPublicKeyY);
IanBenzMaxim 13:6a6225690c2e 206 if (result)
IanBenzMaxim 13:6a6225690c2e 207 return result;
IanBenzMaxim 13:6a6225690c2e 208 result = ds2476.writeMemory(DS2476::PrivateKeyC, authPrivateKey);
IanBenzMaxim 13:6a6225690c2e 209 if (result)
IanBenzMaxim 13:6a6225690c2e 210 return result;
IanBenzMaxim 13:6a6225690c2e 211 // Page 25
IanBenzMaxim 13:6a6225690c2e 212 result = ds2476.writeMemory(DS2476::SecretA, masterSecret);
IanBenzMaxim 13:6a6225690c2e 213 if (result)
IanBenzMaxim 13:6a6225690c2e 214 return result;
IanBenzMaxim 13:6a6225690c2e 215 // Page 26
IanBenzMaxim 14:dc839a69379b 216 result = ds2476.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 217 if (result)
IanBenzMaxim 13:6a6225690c2e 218 return result;
IanBenzMaxim 13:6a6225690c2e 219 result = ds2476.writeMemory(DS2476::SecretB, page);
IanBenzMaxim 13:6a6225690c2e 220 if (result)
IanBenzMaxim 13:6a6225690c2e 221 return result;
IanBenzMaxim 13:6a6225690c2e 222 // Page 29
IanBenzMaxim 13:6a6225690c2e 223 /*result = ds2476.setPageProtection(DS2476::GpioControl, DS2476::APH);
IanBenzMaxim 13:6a6225690c2e 224 if (result)
IanBenzMaxim 13:6a6225690c2e 225 return result;*/
IanBenzMaxim 13:6a6225690c2e 226 // Page 14, 15
IanBenzMaxim 13:6a6225690c2e 227 std::vector<uint8_t> publicKeyA;
IanBenzMaxim 13:6a6225690c2e 228 publicKeyA.reserve(page.size() * 2 + 1);
IanBenzMaxim 13:6a6225690c2e 229 result = ds2476.readMemory(DS2476::PublicKeyAX, page);
IanBenzMaxim 13:6a6225690c2e 230 if (result)
IanBenzMaxim 13:6a6225690c2e 231 return result;
IanBenzMaxim 13:6a6225690c2e 232 publicKeyA.assign(page.begin(), page.end());
IanBenzMaxim 13:6a6225690c2e 233 result = ds2476.readMemory(DS2476::PublicKeyAY, page);
IanBenzMaxim 13:6a6225690c2e 234 if (result)
IanBenzMaxim 13:6a6225690c2e 235 return result;
IanBenzMaxim 13:6a6225690c2e 236 publicKeyA.insert(publicKeyA.end(), page.begin(), page.end());
IanBenzMaxim 13:6a6225690c2e 237 publicKeyA.insert(publicKeyA.end(), 0x00); // Customization
IanBenzMaxim 13:6a6225690c2e 238 result = ds2476.writeBuffer(&publicKeyA[0], publicKeyA.size());
IanBenzMaxim 13:6a6225690c2e 239 if (result)
IanBenzMaxim 13:6a6225690c2e 240 return result;
IanBenzMaxim 13:6a6225690c2e 241 Ecc256::Signature writeCertificate;
IanBenzMaxim 13:6a6225690c2e 242 result = ds2476.generateEcdsaSignature(DS2476::KeyNumC, writeCertificate);
IanBenzMaxim 13:6a6225690c2e 243 if (result)
IanBenzMaxim 13:6a6225690c2e 244 return result;
IanBenzMaxim 13:6a6225690c2e 245 result = ds2476.writeMemory(DS2476::UserData14, writeCertificate.r);
IanBenzMaxim 13:6a6225690c2e 246 if (result)
IanBenzMaxim 13:6a6225690c2e 247 return result;
IanBenzMaxim 13:6a6225690c2e 248 result = ds2476.writeMemory(DS2476::UserData15, writeCertificate.s);
IanBenzMaxim 13:6a6225690c2e 249 if (result)
IanBenzMaxim 13:6a6225690c2e 250 return result;
IanBenzMaxim 13:6a6225690c2e 251 // Remove Private Key C and set protection
IanBenzMaxim 14:dc839a69379b 252 result = ds2476.readRng(page.data(), page.size());
IanBenzMaxim 13:6a6225690c2e 253 if (result)
IanBenzMaxim 13:6a6225690c2e 254 return result;
IanBenzMaxim 13:6a6225690c2e 255 result = ds2476.writeMemory(DS2476::PrivateKeyC, page);
IanBenzMaxim 13:6a6225690c2e 256 /*if (result)
IanBenzMaxim 13:6a6225690c2e 257 return result;
IanBenzMaxim 13:6a6225690c2e 258 result = ds2476.setPageProtection(DS2476::PublicKeyCX,
IanBenzMaxim 13:6a6225690c2e 259 DS2476::PageProtection::AUTH);*/
IanBenzMaxim 13:6a6225690c2e 260 return result;
IanBenzMaxim 0:33d4e66780c0 261 }
IanBenzMaxim 0:33d4e66780c0 262
IanBenzMaxim 13:6a6225690c2e 263 error_code checkAuthenticatorProvisioned(DS28C36 & ds28c36,
IanBenzMaxim 13:6a6225690c2e 264 bool & provisioned) {
IanBenzMaxim 13:6a6225690c2e 265 DS28C36::PageProtection protection;
IanBenzMaxim 13:6a6225690c2e 266 const error_code result =
IanBenzMaxim 13:6a6225690c2e 267 ds28c36.readPageProtection(DS28C36::GpioControl, protection);
IanBenzMaxim 13:6a6225690c2e 268 if (!result)
IanBenzMaxim 13:6a6225690c2e 269 provisioned = protection.test(DS28C36::APH);
IanBenzMaxim 13:6a6225690c2e 270 return result;
IanBenzMaxim 0:33d4e66780c0 271 }
IanBenzMaxim 0:33d4e66780c0 272
IanBenzMaxim 13:6a6225690c2e 273 error_code checkCoprocessorProvisioned(DS2476 & ds2476, bool & provisioned) {
IanBenzMaxim 13:6a6225690c2e 274 DS2476::Page page;
IanBenzMaxim 13:6a6225690c2e 275 const error_code result = ds2476.readMemory(DS2476::PublicKeyCX, page);
IanBenzMaxim 13:6a6225690c2e 276 if (!result)
IanBenzMaxim 0:33d4e66780c0 277 provisioned = (page == authPublicKeyX);
IanBenzMaxim 13:6a6225690c2e 278 return result;
IanBenzMaxim 0:33d4e66780c0 279 }