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Software components for data protection, secure storage and transfer


Add perfect security to your application!

SecureBlackbox is a suite of software components that allows developers to add strong security to their applications to protect binary data, files, documents and e-mails.

SecureBlackbox includes authentic implementations (no 3rd-party code used) of various data security standards and network communication protocols for various platforms (Windows, .NET, Linux, macOS / iOS, Java / Android).

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Latest version

Release:  15.1.304
23 May 2017

Pre-release:  16.0.303
21 May 2017

XMLBlackbox package of SecureBlackbox®

SecureBlackbox product diagram

With XMLBlackbox you can extend your XML processing applications with outstanding security features, such as XML-compliant password-based, certificate-based and OpenPGP-based encryption, certificate-based and OpenPGP-based signing and timestamping of your XML documents or any generic data.

XMLBlackbox can encrypt or sign and timestamp valid XML document or any data and perform processing according to XMLEnc, XMLDSig and XAdES specifications. For XAdES signing all profiles defined by the specification are supported.

Additionally XMLBlackbox lets you sign SOAP messages and verify signatures of signed SOAP messages according to WS-Security, SOAP-DSig and XMLDSig standards. With addition of HTTPBlackbox you can also send SOAP requests and receive and process SOAP responses.

XMLBlackbox supports on-demand data loading and parsing, so processing large documents does not require large amount of resources.

XMLBlackbox includes built-in XML DOM processor with charset/encoding support which you can use independently of security features of XMLBlackbox.

As the main function of XMLBlackbox is to sign and encrypt XML documents using X.509 certificates and OpenPGP keys, it includes base functions of PKIBlackbox for certificate management and OpenPGPBlackbox for OpenPGP key management.

XAdES specification has several levels, some of which require collection of external timestamps and complete certificate chain revocation information. This is performed by XMLBlackbox with help of additional SecureBlackbox packages (HTTPBlackbox client and LDAPBlackbox) licensed separately, in AdESBlackbox or as part of larger Professional package.

Top 6 reasons to choose SecureBlackbox:


Strict observance of the standards and the most secure algorithms, used in the industry, ensures highest level of security of the offered solutions.


SecureBlackbox is an integrated suite of instruments, equally applicable for building complex security-related software solutions and for adding data protection to existing applications.

Easy to use architecture

SecureBlackbox was carefully designed by software architects, who have extensive experience in software development and design.

Readiness for use

One can use SecureBlackbox even if he/she has only basic knowledge of information security and cryptography.

Flexible support policy

EldoS offers many support options, from forums and knowlegebase to free individual support and expert services.

Affordable licensing schemes

EldoS offers affordable royalty-free licenses for all its products. All licenses include free individual support and free updates.

Read about XMLBlackbox (.NET edition)
Read about XMLBlackbox (VCL edition)
Read about XMLBlackbox (Java edition)
Read about XMLBlackbox (C++ edition)
Read about XMLBlackbox (PHP edition)


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As of July 15, 2016 EldoS business operates as a division of /n software, inc. For more information, please read the announcement.

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