Allegro AE™

Security and Connectivity for the IoT Edge

Internet Software for Embedded Devices

Today, the Internet connects billions of users worldwide and is an integral part of how people work, play, and communicate. Research shows that billions of “smart” devices are active members of the networked world busily collecting, securely distributing and acting upon all forms of data. As the premier provider of Internet and Security software for embedded applications, Allegro services OEM manufacturers creating “smart“ and secure devices with easy to use, feature-rich Internet enabling software toolkits.

The Allegro AE Product Suite delivers powerful Internet and device security technology specifically engineered for the rigors of embedded computing to OEM design engineering teams. The Allegro AE suite offers IPv4 and IPv6 operation enabling OEM manufactures to build secure embedded device management architectures that perform seamlessly in IPv4 and IPV6 networking environments alike. The Allegro AE product suite is pre-integrated with the ACE™ (Allegro Cryptography Engine) FIPS 140-2 level 2 validated cryptography module, enabling manufacturers to add standards-based cryptography to resource-sensitive embedded systems quickly, easily, and reliably while decreasing time to market. The family of Allegro AE product toolkits deliver field-proven standards-based protocol components to securely serve Web pages, images or applets, securely retrieve files from resources on the Web, quickly create a secure and robust Command Line Interface (CLI), and exchange XML and SOAP messaging with enterprise or cloud-based computing and storage resources.

Advanced device management architectures

Shipping inside over 200 million products with over 300 design wins worldwide, Allegro is a leading OEM supplier of embedded networking technology. The entire product family is delivered as ANSI-C source and has been ported to all major processor and RTOS platforms. All products utilize a field-proven software abstraction layer to provide an interface to any RTOS, TCP/IP protocol stack and file system environment. Delivered as stand-alone products or as a pre-integrated suite, Allegro’s toolkits offer unprecedented design flexibility and scalable Internet networking solutions for your design needs.

rompager advanced edition product family

RomPager AE

RomPager AE is a full-featured HTTP 1.0/1.1 Web server toolkit that offers IPv4 and IPv6 operation, CGI-style user exit support, an internal security database, optional file support, and PageBuilder HTML offline compiler. The PageBuilder compiler dramatically reduces development time, coding effort, and potential errors by converting HTML into compilable source code. The compiler provides full support for HTML (2.0, 3.2, 4.0 and 5.0), XHTML, JavaScript, object compression, application compression, and international languages with dynamic phrase dictionaries.

RomWebClient AE

The RomWebClient AE toolkit is a full-featured HTTP 1.0/1.1 Web client that retrieves and stores objects from any remote Web server using HTTP over IPv4 or IPv6. Objects can be in any format and are stored in memory or in an optional file system. The toolkit also supports caching, cookies, HTTP pipelining capabilities, and advanced HTTP streaming.


RomSTL is a small, resource sensitive TLS client and server solution specifically engineered for embedded systems. RomSTL is pre-integrated with the full suite of RomPager AE products making it easy to envoke TLS as needed. RomSTL supports the latest RFC standards for TLS 1.0, TLS 1.1, and TLS 1.2 secure server and client sessions. The toolkit is hardware and software platform agnostic and written from the ground up for efficiency. The encryption protocols interoperate with any secure browser or server and include FIPS 140-2 validated RSA, RC4, DES, 3DES, SHA, AES, and Suite B algorithms.


The RomXML AE toolkit is a small eXtensible Markup Language (XML) implementation that enables your embedded device to send (frame) and receive (parse) XML documents. Using XML in your embedded designs provides for free-format interchange of data and is widely accepted in the device management, remote sensing, and enterprise IT communities. Allegro’s RomXML AE has been designed from the ground up for use in embedded devices that often have limited resources. Written in ANSI-C, the toolkit offers built-in capabilities to convert internal data between C language structures and XML documents. The RomXOAP AE toolkit builds upon the capabilities of RomXML AE and offers design engineers a comprehensive solution for creating connectivity between embedded designs and enterprise IT environments utilizing standards-based SOAP technology. Available as stand-alone toolkits or tightly integrated with the other RomPager AE suite of products, RomXML AE and RomXOAP AE provide the foundation for enabling embedded devices with XML, SOAP, XML-RPC, REST, and Web Services capabilities.


The RomCLI AE toolkit is used to build Command Line Interfaces (CLI) similar to Cisco IOS-based products. The RomCLI AE toolkit includes the CliBuilder offline compiler for preparing command definitions along with RomTelnet, a Telnet server, and RomConsole supporting serial communications. A unique variable access structure allows your embedded development team to use the same access functions for RomPager AE, RomCLI AE, and SNMP. Because security is always a concern when connecting embedded devices to a network, RomCLI AE is often used in conjunction with RomSShell AE to provide a Secure Shell interface for device management.

RomSShell AE

RomSShell is an embedded Secure Shell version 2 (SSH) toolkit. SSH provides encrypted communications between hosts over an insecure network. RomSShell offers a range of client authentication options in addition to X.509 public-key certificates. RomSShell can also be used for port forwarding (sometimes called SSH tunneling), allowing you to arbitrarily tunnel secure TCP connections. RomSShell AE also supports the latest RFCs for implementing Suite B with Secure Shell.


RomCert is a platform-independent implementation of the Online Certificate Status Protocol (OCSP) and the Simple Certificate Enrollment Protocol (SCEP) and makes embedding security certificate management into resource sensitive embedded systems and consumer electronics fast, easy, and reliable while decreasing time to market.

ACE – Allegro Cryptography Engine

Allegro’s suite of Embedded Device Security toolkits makes embedding standards-based security protocols into resource sensitive embedded systems and consumer electronics fast, easy and reliable. The ACE (Allegro Cryptography Engine) toolkit is a cryptographic library module specifically engineered to meet the critical needs of embedded computing systems in addition to fulfilling the requirements needed for FIPS 140-2 level 2 validation. The module provides embedded systems developers with a common software interface to enable bulk encryption and decryption, message digests, digital signature creation and validation, and key generation and exchange. Suite B is an advanced standard for cryptography that defines algorithms and strengths for encryption, hashing, calculating digital signatures, and key exchange. ACE includes a platform independent, government validated implementation of the NSA Suite B defined suite of cryptographic algorithms.

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