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Asked: 2026-05-16T04:54:21+00:00

I’m looking for a library compatible with microsoft.net framework that allows the creation and

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I’m looking for a library compatible with microsoft.net framework that allows the creation and verification of XAdES signatures (XAdES, XAdES-C, XAdES-XL, etc…).

It is important that the library enable the programmer to choose:

1.- Type of certificate to use in the signature process (PFX file, Windows centralized store, SmartCard)
2.- CRL to validate the certificate.
3.- Possibility to include Time stamping on the signature.
4.- Possibility to include OCSP response on the signature.

All I found are libraries in Java, but have not found any libraries in .NET.

All suggestions are welcome.

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1 Answer

  1. Editorial Team

    It seems XAdES (XML Advances Digital Signature) is dificult to find 😀

    I searched in the web but I only found implementations in Java using Apache libraries, and only 1 .NET library that is mentioned in some web forums:

    SecureBlackbox by EldoS
    http://www.eldos.com/sbb/

    In the tests in ran on this library I found it to work perfectly with documents that only need 1 signature, but when you need to multi-sign a document it surfaces some problems.

    At the moment I have not found a functional implementation of XAdES in .NET that you can use to put multiple signatures in an XML with Timestamping al CRLs.

    EDIT (27/08/2012):

    A team at Microsoft France developed an implementation of XAdES using .NET 3.5.

    At this moment the library is available for download at this Microsoft web site ( http://www.microsoft.com/france/interop/ressources/xades.aspx) and it supports XAdES, XAdES-T, XAdES-C, XAdES-X and XAdES-XL signatures.

    A pretty good solution entirely written in .NET

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