Gerard Fianen. Copyright 2014 Cypherbridge Systems LLC Page 1
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1 Securing the Internet of Things Gerard Fianen Copyright 2014 Cypherbridge Systems LLC Page 1
2 INDES-IDS BV - Embedded Software Development The choice of professionals info@indes.com Tel:
3 IoT- Growing Pains Hacking in embedded control systems is increasing risk Securing Personally Identifiable Information (PII) is crucial for the rollout and growth of IoT market Regional or National Regulatory requirements such as HIPPA require electronic data privacylayers to protect personal information, and to verify data integrity and authenticity Removable flash drives make it easy to install and steal programs or data Copyright 2014 Cypherbridge Systems LLC Page 3
4 Security Protocols and libraries ussl/tls point to point secure channel above TCP layer. Use this for perapplication secure client or server. Flexible protocol for embedded TLS HTTPS, SMTPs, DTLS UDP, etc. Supports secure file transfer by FTPS. ussh Secure telnet replacement. Supports secure file transfer by SCP uvpn point to point secure channel at IP layer. Bulk encryption for all traffic between endpoints. Use for road warrior or fixed infrastructure connection. ufile Add encrypted file system to protect stored data on embedded system ucrypt general purpose crypto library including high-strength cipher & hash Copyright 2014 Cypherbridge Systems LLC Page 4
5 SSL and SSH Host Application (modified for SSL) SSH Client CypherBridge SSL TCP/IP stack Link Layer Secure SSH Connection Target SSH Server SSL, TLS 1.0, 1.1 and 1.2, PKI X.509 certificates, crypto, hashing and network protocols. SSH and secure TCP/IP tunnel embedded server and client, flexible interactive shell, and SCP copy option.
6 IPSEC Standard IP-protocol not secure IPsec wil add Encryption Authentication TCP/IP Application (unmodified) TCP/IP Stack Cypher- Bridge IKE CypherBridge IPsec Link Layer Supports AH and ESP connections Integrated ucrypt cryptographic library includes DHM, AES, 3DES, RC4, SHA1, MD5 TCP/IP StacK NetIF interface integrates with RTOS, Kernel, User Mode TCP/IP stacks Network
7 IKE -an application which generates keys and distributes them securely Security Associations are stored in SA database (SADB), used by IPsec Security Policy Database (SPD) governs what security to apply to incoming and outgoing packets SPD SADB IKE Appl TCP/IP stack IPsec SAs can be setup in advance no negotiation overhead when applications need secure communication Appl IKE SPD TCP/IP stack IPsec SADB
8 IPSEC/ IKE
9 VPN
10 Case Study - Malware Install Payment system hacks in large scale retail systems including Target, Home Depot, and others requires new levels of control for software updates System is first compromised by hacking into back office systems Once hackers get command line, then malware installs from IT systems are downloaded to terminals through software update process Terminals fail to authenticate software update Malware becomes resident in terminal and works with compromised back office system to steal payment card track information and PINs Copyright 2014 Cypherbridge Systems LLC Page 10
11 uload Install Defender Overview LKG and factory image rollback Managed registry retains image history Power fail recovery Manage code images and FPGA bitstream files Use standard compilers including IAR, GCC, Keil etc. Example porting : NXP LCP1857 (Cortex-M3) Copyright 2014 Cypherbridge Systems LLC Page 11
12 uload Install Defender Overview Resident loader in embedded terminal Authenticate safe origin and integrity of software updates Software is installed only if genuine and authorized Multi-level encryption and hashing achieves robust solution Encrypted files on USB or MicroSDflash drives are un-hackable if lost or stolen Copyright 2014 Cypherbridge Systems LLC Page 12
13 Prepare Software Update File using WinSDS GUI or ufile command line Toolkit: WinSDSGUI imports compiled and linked binary image from standard toolchain E.g. IAR, GCC etc, etc. User enters activation code Encrypts image and adds managed file header Managed file is safe and ready to install! Copyright 2014 Cypherbridge Systems LLC Page 13
14 uloadinstall Defender Step-by-Step Loader starts at reset, armed with pushbutton hold-down, reads loader.ini options and file names from USB or MicroSDflash drive Loader verifies external system application file integrity using managed image header and keyset Loader verifies internal application against managed image files. Must exact match SHA1 hash. If verify fails, loader reads application file from USB and writes to MCU internal flash. Loader jumps to system application start address Loader failsafe jumps to system application if any load steps fail Copyright 2014 Cypherbridge Systems LLC Page 14
15 Loader Start USB Example Reset Device Manager start USB MSC File System No USB Ready? Yes Read loader options file loader.ini Loader.ini Sysapp.uld Keyset.txt Use compiled default loader options Loader Finish No Use defaults INI Read OK? Yes Loader Install Copyright 2014 Cypherbridge Systems LLC Page 15
16 Loader Installs System Application No Load keyset Verify system application file File Verified? Yes Sysapp.uld Keyset.txt Recovery Enabled? No Compare application internal flash against application file Yes Go to Install Recovery Application Yes Match? No Install system application file to internal flash Loader Finish Copyright 2014 Cypherbridge Systems LLC Page 16
17 Loader Finish Device Manager close file system Yes Failsafe Check? No No Failsafe Enabled? No Install OK? Yes Yes Prompt Operator for Recovery Restart Loader Jump to System Application Copyright 2014 Cypherbridge Systems LLC Page 17
18 Nice.. But how do I add this to my embedded system? Can t I simply download this all from the internet? Embedded systems can be very resource constrained Memory footprint Performance Power Budget Integration in my embedded application Drivers & RTOS integration? Integration with IP-stack Integration with application code Is all this not very complex? I am in a hurry to get to market!! Copyright 2014 Cypherbridge Systems LLC Page 18
19 Integration & porting examples : TexasInstrumentsMSP430, StellarisCortex M3, SitaraCA8 and ARM9. DSP BIOS/NDK platforms includingdm642 NXP3250 ARM9, LPC175x, LPC1768, LPC1788, LPC18x57 ST Microelectronics STM32F2xx and STM32F4xx Freescale KinetisK60 Renesas M16C, RX62N Atmel AT91SAM ADI Blackfin Evaluationboards fromfreescale, STMicroEvaland Discovery, TI, NXP, Phytec, Keil, Atmel, Embedded Artists, Critical Link, and more! Copyright 2014 Cypherbridge Systems LLC Page 19
20 Copyright 2014 Cypherbridge Systems LLC Page 20
21 Integration & time-to-market : - SDK s and Toolkits uload Safe software loader and installer blocks malware & unlicensed updates CDK Cloud Toolkit integrated end-to-end solution to enable devices to connect securely to the cloud, to synchronize and replicate files Copyright 2014 Cypherbridge Systems LLC Page 21
22 Integration & time-to-market : - Vertical Solution packages and customer examples Electric Vehicle Charging Solution usslsdk, Control firmware & TCP-stack on Renesas M16C65 Smart Meter Security ussl SDK, Embedded RTOS & TCP-stack on STM32F207 Scada Secure Telemetry usshsdk, Embedded RTOS and TCP on STM32F407 AK200 Point-Of-Sale Terminal Platform provides a low-power, low-footprint approach to wirelessly secure payment transactions in embedded devices. AK200 includes a nationwide cellular data plan in partnership with WylessGroup, an M2M managed service provider. Copyright 2014 Cypherbridge Systems LLC Page 22
23 INDES-IDS BV - QuickStart service On-site assistance in setting up Tools, RTOS and middleware We can do the integration with your platform and application for you Local expert support You give us (prototype) hardware so we can locally reproduce problems and support you Fixed price integration services Copyright 2014 Cypherbridge Systems LLC Page 23
24 For more information contact: Tel : Page 24
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