Rewrite code to sign pdf LTV enabled using itextsharp and C#

I need someone to write code (in existing method) to sign pdf documents using itextsharp .net library. The code should be written in C#.

public byte[] Sign(byte[] document, X509Certificate2 certificate, ITSAClient tsaClient)


//signing code here

return signed_document;


method receives pdf document as byte array that should be signed, certificate to sign with and TSA client and it returns signed document as byte array or null if there was error. Now it returns signed pdf document but it isnt LTV enabled.

Signed document must be LTV enabled, signed documents are used for archiving.

I've attached c# Visual studio test solution. You need to modify method Sign in [login to view URL] file without adding new references or changing any other part except [login to view URL] file (you can add helper Methods if needeed).

When completed i will test method with real world document and certificate and with Adobe reader.

Habilidades: .NET, Programação C#, PDF, Arquitetura de software

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Acerca do Empregador:
( 1 comentário ) Sisak, Croatia

ID do Projeto: #17761744

Concedido a:


Hello Sir/Madam, accept warm greetings from Ken J. I can edit that code for you in at most a day. I have 3 years of experience in C# and .net. Lets talk more over chat. Best regards Ken J.

€23 EUR em 1 dia
(4 Comentários)

2 freelancers estão ofertando em média €27 para esse trabalho


I have over 10 years of experience in programming. I have made several Web and Desktop Applications. I have used iTextSharp library in C# before, I used it to geenrtae PDF from HTML. I have complete command over C#, AS Mais

€30 EUR in 3 dias
(1 Comentário)