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.

src/Text.hpp@17:5926077e5345, 2019-10-04 (annotated)

Committer:
IanBenzMaxim
Date:
Fri Oct 04 12:10:11 2019 -0500
Revision:
17:5926077e5345
Parent:
16:a004191a79ab 
Set pin maps through the mbed configuration system. Added support for MAX32625MBED target. Updated mbed-os to version 5.7.7 for MAX32625 I2C fixes. Consolidated simplelink hook definitions.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
IanBenzMaxim 0:33d4e66780c0 1 /*******************************************************************************
IanBenzMaxim 16:a004191a79ab 2 * Copyright (C) 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 0:33d4e66780c0 33 #ifndef TEXT_HPP
IanBenzMaxim 0:33d4e66780c0 34 #define TEXT_HPP
IanBenzMaxim 0:33d4e66780c0 35
IanBenzMaxim 0:33d4e66780c0 36 #include <list>
IanBenzMaxim 0:33d4e66780c0 37 #include <string>
IanBenzMaxim 0:33d4e66780c0 38 #include "Graphic.hpp"
IanBenzMaxim 0:33d4e66780c0 39
IanBenzMaxim 0:33d4e66780c0 40 /// Text graphical primitive.
IanBenzMaxim 13:6a6225690c2e 41 class Text : public Graphic {
IanBenzMaxim 0:33d4e66780c0 42 public:
IanBenzMaxim 13:6a6225690c2e 43 Text();
IanBenzMaxim 13:6a6225690c2e 44
IanBenzMaxim 16:a004191a79ab 45 /// @name Text
IanBenzMaxim 16:a004191a79ab 46 /// @brief Text string to display.
IanBenzMaxim 13:6a6225690c2e 47 /// @details
IanBenzMaxim 13:6a6225690c2e 48 /// Only printable ASCII characters and the line feed ('\n') will be displayed.
IanBenzMaxim 16:a004191a79ab 49 /// @{
IanBenzMaxim 16:a004191a79ab 50
IanBenzMaxim 16:a004191a79ab 51 const std::string & text() const { return text_; }
IanBenzMaxim 13:6a6225690c2e 52 void setText(const std::string & text);
IanBenzMaxim 16:a004191a79ab 53
IanBenzMaxim 13:6a6225690c2e 54 /// @}
IanBenzMaxim 13:6a6225690c2e 55
IanBenzMaxim 16:a004191a79ab 56 /// @name Word wrap
IanBenzMaxim 16:a004191a79ab 57 /// @brief
IanBenzMaxim 16:a004191a79ab 58 /// Lines will be wrapped when they are too long to be displayed with the
IanBenzMaxim 16:a004191a79ab 59 /// current width.
IanBenzMaxim 13:6a6225690c2e 60 /// @{
IanBenzMaxim 16:a004191a79ab 61
IanBenzMaxim 16:a004191a79ab 62 bool wordWrap() const { return wordWrap_; }
IanBenzMaxim 13:6a6225690c2e 63 void setWordWrap(bool wordWrap);
IanBenzMaxim 16:a004191a79ab 64
IanBenzMaxim 13:6a6225690c2e 65 /// @}
IanBenzMaxim 13:6a6225690c2e 66
IanBenzMaxim 16:a004191a79ab 67 /// @name Character spacing
IanBenzMaxim 16:a004191a79ab 68 /// @brief Spacing in pixels between characters.
IanBenzMaxim 13:6a6225690c2e 69 /// @{
IanBenzMaxim 16:a004191a79ab 70
IanBenzMaxim 16:a004191a79ab 71 int charSpacing() const { return charSpacing_; }
IanBenzMaxim 13:6a6225690c2e 72 void setCharSpacing(int charSpacing);
IanBenzMaxim 16:a004191a79ab 73
IanBenzMaxim 13:6a6225690c2e 74 /// @}
IanBenzMaxim 13:6a6225690c2e 75
IanBenzMaxim 13:6a6225690c2e 76 /// @{
IanBenzMaxim 13:6a6225690c2e 77 /// Spacing in pixels between lines.
IanBenzMaxim 16:a004191a79ab 78 int lineSpacing() const { return lineSpacing_; }
IanBenzMaxim 13:6a6225690c2e 79 void setLineSpacing(int lineSpacing);
IanBenzMaxim 13:6a6225690c2e 80 /// @}
IanBenzMaxim 13:6a6225690c2e 81
IanBenzMaxim 16:a004191a79ab 82 /// @brief Preferred width and height calculated after word wrapping.
IanBenzMaxim 13:6a6225690c2e 83 /// @{
IanBenzMaxim 16:a004191a79ab 84
IanBenzMaxim 13:6a6225690c2e 85 int preferredWidth() const;
IanBenzMaxim 13:6a6225690c2e 86 int preferredHeight() const;
IanBenzMaxim 16:a004191a79ab 87
IanBenzMaxim 13:6a6225690c2e 88 /// @}
IanBenzMaxim 13:6a6225690c2e 89
IanBenzMaxim 0:33d4e66780c0 90 protected:
IanBenzMaxim 13:6a6225690c2e 91 virtual void resized();
IanBenzMaxim 13:6a6225690c2e 92 virtual void doRender(Bitmap & bitmap, int xOffset, int yOffset) const;
IanBenzMaxim 0:33d4e66780c0 93
IanBenzMaxim 0:33d4e66780c0 94 private:
IanBenzMaxim 13:6a6225690c2e 95 void calculateLayout() const;
IanBenzMaxim 8:a0d75dff3c9b 96
IanBenzMaxim 16:a004191a79ab 97 std::string text_;
IanBenzMaxim 16:a004191a79ab 98 bool wordWrap_;
IanBenzMaxim 16:a004191a79ab 99 int charSpacing_;
IanBenzMaxim 16:a004191a79ab 100 int lineSpacing_;
IanBenzMaxim 13:6a6225690c2e 101
IanBenzMaxim 16:a004191a79ab 102 mutable std::list<std::string> textLines_;
IanBenzMaxim 16:a004191a79ab 103 mutable int preferredWidth_;
IanBenzMaxim 16:a004191a79ab 104 mutable int preferredHeight_;
IanBenzMaxim 0:33d4e66780c0 105 };
IanBenzMaxim 0:33d4e66780c0 106
IanBenzMaxim 0:33d4e66780c0 107 #endif