Zeutro offers professional cryptographic software libraries that support a variety of attribute-based encryption (ABE) algorithms, industry standard cryptographic functions and tools, and an intuitive application programming interface (API). These libraries allow developers to seamlessly incorporate ABE technology into applications that would benefit from ABE to protect and control access to sensitive data.
Choose your solution below:
The Zeutro Toolkit (ZTK) includes all the functionality of OpenABE and additional functionalities not included in OpenABE, some of which are patented by Zeutro.
|Content-based ABE Support|
|Role-based ABE Support|
|Zeutro's Patented Multi-authority ABE Support|
|Zeutro's Patented Key Storage Support|
|Best Practices (CCA) Security|
|Types of Policies|
OpenABE and the ZTK offer several attribute-based encryption (ABE) schemes together with other core cryptographic functionalities such as authenticated symmetric-key encryption, public key encryption, digital signatures, X.509 certificate handling, key derivation functions, pseudorandom generators and more.
To make ABE as secure and user-friendly as possible, the following features are provided by default in Zeutro libraries:
OpenABE and the ZTK come with support for efficient and optimized implementations of content-based and role-based ABE schemes. If your application requires multi-authority ABE (Zeutro's US Patent No. 8516244), that comes in Zeutro's Toolkit (ZTK) that is available for commercial license.
OpenABE and the ZTK come with support for efficiently managing an ABE keystore (e.g., a method for storing and selecting private ABE keys for decryption of ABE ciphertexts), which is an essential part of any practical ABE implementation. See Zeutro's US Patent No. 9209974.
For more cryptographic details of OpenABE, see the OpenABE Design Document.
While some ABE systems limit the types of attributes or the number of times they can appear in a policy, Zeutro’s ABE solutions were designed to avoid such restrictions. Any alphanumeric string can be an attribute and the attribute set is not restricted or fixed at system initialization time. The set of attributes you will use can be anything you want and will likely be specific to your application. OpenABE and the ZTK currently support access control policies that are boolean formulas over the attributes, because we believe this offers the best balance of efficiency and practicality for most applications. If your application requires something more, reach out to us.
Our ABE implementations have been optimized for superior performance. For the types of ABE algorithms supported, running times and ciphertext and key sizes scale linearly with the number of attributes used. For most applications, in our experience and even with hundreds of attributes, the overhead of the ABE/ZTK functions is dwarfed by other factors such as network latency.
They can be installed in the following environments:
OpenABE and the Zeutro Toolkit are copyrighted by Zeutro, LLC with all rights reserved.
Our software licensing is offered according to a dual licensing scheme. OpenABE is licensed under the terms of the GNU Affero General Public License (AGPL) as published by the Free Software Foundation, version 3 (or later). You can be released from the requirements of AGPL and obtain additional features by purchasing a commercial license to the Zeutro Toolkit (ZTK). The ZTK includes all the functionality of OpenABE and additional functionalities not included in OpenABE, some of which are patented by Zeutro. Buying a commercial license is mandatory if you engage in activities involving OpenABE that do not comply with the open source requirements of AGPL. Contact us for more information.