Secure Software for the Internet of Things

An Embedded SSH Client/Server

RomSShell AE is a Secure Shell (SSH) toolkit that is often used in conjunction with RomCLI AE to deliver secure remote device management capabilities to many Internet of Things (IoT) applications. SSH provides encrypted communications between hosts over an insecure network. SSH and RomSShell AE offer a range of client authentication options other than X.509 public-key certificates which require a fully functioning public key infrastructure. SSH is also useful for port forwarding (sometimes called SSH tunneling) allowing you to arbitrarily tunnel secure TCP connections.

embedded ssh client server toolkit

Although traditionally found in enterprise and networking infrastructure products, SSH popularity has spread to many additional vertical markets and now includes: consumer electronics, defense, gaming devices, medical applications, and the Smart Grid.

Allegro’s RomSShell AE client/server toolkit supports SSH version 2 and is pre-integrated with Allegro’s FIPS 140-2 and Suite B cryptography. RomSShell AE is also tightly integrated with RomCert, an embedded implementation of Online Certificate Status Protocol (OCSP) and Simple Certificate Enrollment Protocol (SCEP), that makes embedding security certificate management into resource sensitive embedded systems and consumer electronics fast, easy and reliable, while decreasing time to market.

Features

Benefits

Small code footprint

More resources available for application features

ANSI C Source Code Distribution

Broad processor architecture support eases porting and support

Processor, RTOS, and TCP/IP stack agnostic

Allegro’s products will work with new or existing hardware and software designs

Interface files for leading RTOS vendors provided

Minimizes porting effort, increase time to market

Shipping in millions of products worldwide

Field-proven reliability

GPL Free

No licensing or development issues related to GPL

Supports multiple simultaneous SSH sessions

Enables a robust design that can support multiple users and various fielded environments

SSH Version 2

Latest SSH technology can be embedded in your device

SSH Client and Server

Your embedded design can reach out to an SSH server or allow an SSH client remotes assess for secure device management

Embedded FIPS 140-2 Cryptography

FIPS 140-2 Level 2 Logo

The Allegro Cryptography Engine (ACE) is a platform independent, high performance, resource sensitive, embedded  FIPS 140-2 Validated cryptography engine specifically engineered for the rigors of embedded computing. ACE enables OEM manufacturers to add sophisticated FIPS approved encryption technology to their designs and dramatically speed the development cycle. The ACE cryptography library is designed to meet the requirements needed for FIPS 140-2 validation.

ACE

Embedded systems are appearing in virtually all industries with the capability to communicate independently. The rapid adoption and deployment of modern communication technologies have enabled new applications in healthcare, military applications, energy management, consumer devices and many other areas. With these capabilities, comes the need for embedded device security. Any network-enabled device must be considered as a potential target for malicious intent. Encryption of sensitive data while in motion or at rest is a key component to thwarting malicious attacks and reducing risk.

ACE is a cryptographic library module for embedded computing systems that provides validated software implementations of FIPS-approved algorithms for the calculation of message digests, digital signature creation and verification, bulk encryption and decryption, key generation and key exchange. Used stand-alone or pre-integrated with Allegro's Secure IoT Suite, ACE provides CAVP validated implementations of sophisticated FIPS approved encryption algorithms for use in embedded systems. In 2005, the National Security Agency (NSA) defined a set of cryptographic algorithms that when used together, are the preferred method for assuring the security and integrity of information passed over public networks such as the Internet. Today, Suite B is globally recognized as an advanced standard for cryptography that defines algorithms and strengths for encryption, hashing, calculating digital signatures and key exchange. ACE includes a platform independent, CAVP validated implementation of the NSA Suite B defined suite of cryptographic algorithms. ACE is delivered as ANSI C source.

Securing Data In Motion

Many IoT applications often collect and correlate valuable sensitive information at the edge of the Internet and routinely transmit it to servers in the cloud securely. TLS and DTLS are the “defacto” standards for keeping data secure when communicating with servers in the cloud. Allegro’s RomSTL, embedded TLS, and DTLS toolkit, tightly integrates FIPS validated cryptography with a standards-based, embedded implementation of TLS/DTLS to keep your data secure while in motion. RomTLS is additionally integrated to make use of ACE’s support of Suite B algorithms (RFC 6460).

Securing Data At Rest

Allegro’s secure data-at-rest solution is tightly integrated with ACE validated FIPS 140-2 cryptography. Before offloading data to cloud-based applications, any sensitive information stored by IoT devices faces numerous threats and risks of unintentional exposure. Adding data encryption to the transmission process has been the traditional method for reducing this risk. However, simply encrypting data transmissions doesn’t fully address many of the threats aimed at recovering small segments of data or potentially the entire collection. Allegro's Secure IoT Suite provides IoT design engineers the ability to proactively address the threat surface created when storing sensitive data on persistent media. Rather than encrypting data at a volume or drive level where exposing a single set of keys potentially compromises a significant amount of sensitive data, Allegro’s secure data-at-rest solution encrypts information at the file level.

ACE can be used stand-alone or pre-integrated with Allegro’s Secure IoT Suite.

TM: A Certification Mark of NIST, which does not imply product endorsement by NIST, the U.S. or Canadian Governments

ACE - FIPS Mode

 

Digital Signature Algorithms

  • RSA (FIPS 186-4) Key lengths: 2048, 3072
    • Padding Modes: ANSI X9.31, PKCS #1v1.5, PSS
  • DSA (FIPS 186-4) Key lengths: 2048, 3072
  • ECDSA (FIPS 186-4) Curves: NIST P-224, P-256, P-384, P-521

Symmetric Keys

  • AES Key lengths: 128, 192, 256
    • Modes: ECB, CBC, CTR, CFB1, CFB8, CFB128, OFB, CCM
  • AES-GCM Key lengths: 128, 192, 256
  • AES-XTS Key lengths: 128, 256
  • TripleDES
    • Modes: ECB, CBC, CFB1, CFB8, CFB64, OFB

Hash Functions

  • SHA-1
  • SHA-224
  • SHA-256
  • SHA-384
  • SHA-512
  • SHA3-224
  • SHA3-256
  • SHA3-384
  • SHA3-512

Message Authentication

  • HMAC-SHA-1
  • HMAC-SHA-224
  • HMAC-SHA-256
  • HMAC-SHA-384
  • HMAC-SHA-512
  • AES-GMAC Keylengths: 128, 192, 256
  • AES-CMAC Keylengths: 128, 192, 256

Key Agreement

  • DH (NIST SP 800-56A)
  • ECDH Curves: NIST P-224, P-256, P-384, P-521

Key Derivation

  • Password-Based Key Derivation Function 2 (PBKDF2)
  • TLS Key Derivation Functions

Random Number Generator

  • DRBG (NIST SP 800-90B)

 

ACE - Non-FIPS Mode

All of the above in addition to the following:

 

Digital Signature Algorithms

  • RSA: arbitrary key lengths 1024, 2048, 3072
  • DSA: arbitrary key lengths 1024, 2048, 3072

Symmetric Keys

  • DES
  • RC4

Hash Functions

  • MD2
  • MD4
  • MD5

Message Authentication

  • HMAC-MD5

 

 

Features

Benefits

Small code footprint

More resources available for application features

ANSI C Source Code Distribution

Broad processor architecture support, eases porting and support

Processor, RTOS and TCP/IP stack agnostic

Allegro's products will work with new or existing hardware and software designs

Flexible Security and External Security support

Use software encryption or if available make use of hardware cryptography acceleration

Compilation switches for size, feature and speed trade-offs

Allows the development team to optimize for system resources

Supported RFCs

System Requirements

  • Processor Architecture - Works with any 16-bit, 32-bit or 64-bit processor
  • Operating System(OS) - Works with any OS vendor and will function without an OS if needed
  • Compiler - ANSI C

NIST CVMP Validation Reference

FIPS 140-2 Level 2 Logo

Validated FIPS FIPS 140-2 Cryptographic Modules

 

Certificate Number Status NIST Link
3432 Active NIST Reference
2966 Active NIST Reference
2048 Historical NIST Reference

CAVP Validation References

 

AES Validation

Validation Number Date
AES 5574 7/27/2018
AES 5573 7/27/2018
AES 4121 10/14/2016
AES 2671 11/8/2013
AES 2314 1/18/2013
AES 2271 11/15/2012

 

DSA Validation

Validation Number Date
DSA 1116 10/14/2016
DSA 810 11/8/2013
DSA 728 1/18/2013
DSA 708 11/15/2012

 

RSA Validation

Validation Number Date
RSA 3000 7/27/2018
RSA 2999 7/27/2018
RSA 2227 10/14/2016
RSA 1374 11/8/2013
RSA 1197 1/8/2013
RSA 1164 11/15/2012

 

ECDSA Validation

Validation Number Date
ECDSA 1505 7/27/2018
ECDSA 1504 7/27/2018
ECDSA 936 10/14/2016
ECDSA 465 11/8/2013
ECDSA 379 1/18/2013
ECDSA 367 11/15/2012

 

Triple-DES

Validation Number Date
TDES 2251 10/14/2016
TDES 1602 11/8/2013
TDES 1459 1/18/2013
TDES 1418 11/15/2012

 

SHA Validation

Validation Number Date
SHS 4478 7/27/2018
SHS 4477 7/27/2018
SHS 3390 10/14/2016
SHS 2243 11/8/2013
SHS 1997 1/8/2013
SHS 1952 11/15/2012

 

ECC Component Validations

Validation Number Date
Component 2005 7/27/2018
Component 2004 7/27/2018
Component 927 10/14/2016
Component 148 11/8/2013
Component 50 1/8/2013
Component 43 11/15/2012

 

DRBG Validation

Validation Number Date
DRBG 2224 7/27/2018
DRBG 2223 7/27/2018
DRBG 1241 10/14/2016
DRBG 430 11/8/2013
DRBG 286 1/8/2013
DRBG 279 11/15/2012

 

SHAKE/SHA-3 Validation

Validation Number Date
SHA-3 8 7/27/2018

 

KDF TLS Validation

Validation Number Date
Component 2062 9/7/2018
Component 2061 9/7/2018
Component 1074 1/27/2017

 

KAS FFC Validation

Validation Number Date
Component 927 10/14/2016
Component 148 11/8/2013
Component 43 11/15/2012

 

KAS ECC Validation

Validation Number Date
Component 2005 7/27/2018
Component 2004 7/27/2018
Component 927 10/14/2016
Component 148 11/8/2013
Component 50 1/8/2013
Component 43 11/15/2012

 

HMAC SHA2 Validation

Validation Number Date
HMAC 3715 7/27/2018
HMAC 3714 7/27/2018
HMAC 2692 10/14/2016
HMAC 1661 11/8/2013
HMAC 1430 1/8/2013
HMAC 1390 11/15/2012

 

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Boxborough, MA 01719

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