Digital signatures - chapter 2
These examples were written in the context of the white paper Digital Signatures for PDF documents.Files: C2_01_SignHelloWorld.java/* * This class is part of the white paper entitled * "Digital...
View ArticleDigital signatures - chapter 3
These examples were written in the context of the white paper Digital Signatures for PDF documents.Files: C3_01_SignWithCAcert.java/* * This class is part of the white paper entitled * "Digital...
View ArticleDigital signatures - chapter 5
These examples were written in the context of the white paper Digital Signatures for PDF documents.Files: C5_01_SignatureIntegrity.javapackagesignatures.chapter5;...
View ArticleRemove digital signatures
Files: FlattenSignature.java/** * Example written by Bruno Lowagie in answer to the following question: * http://stackoverflow.com/questions/28163159/about-visible-digital-signatures...
View ArticleInspect digital signatures
Files: GetN2fromSig.java/* * Example written by Bruno Lowagie. */packagesandbox.security;...
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What is the connection between LTV and document timestamps?
I am confused about LTV in iText. I have read the paper, discussions but there is one thing still unclear. What is the connection between LTV and document timestamps? Or more precisely, how do I make a...
View ArticleWhat does "Not LTV-enabled" mean?
I'm using iText to sign and timestamp PDF documents. It works very well. But I recently switched from Acrobat Pro X to XI and now I see this new line :the signature is not LTV enabled and will expire...
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How to enable LTV for a timestamp signature?
I'm using iText to sign PDF documents. I need these documents to be timestamped and LTV-enabled. I followed the instructions and used the addLtv() method. I get a PDF with 2 signatures, which is...
View ArticleHow can I create a Reader enabled PDF that can be signed in Adobe Reader
Using iText, I've successfully created a document containing an empty signature field. Now I want to allow people to sign this document in Adobe Reader. I've read that I need to Reader enable my...
View ArticleiText guest blog about digital signatures on GlobalSign!
Language English iText founder Bruno is featured over at GlobalSign with an interesting and extensive piece about electronic document signing. Starting from an issue caused by invoice fraud causing...
View ArticleHow can I create a Reader enabled PDF that can be signed in Adobe Reader
Using iText, I've successfully created a document containing an empty signature field. Now I want to allow people to sign this document in Adobe Reader. I've read that I need to Reader enable my...
View ArticleClik here to view.
What is the connection between LTV and document timestamps?
I am confused about LTV in iText. I have read the paper, discussions but there is one thing still unclear. What is the connection between LTV and document timestamps? Or more precisely, how do I make a...
View ArticleClik here to view.
How to enable LTV for a timestamp signature?
I'm using iText to sign PDF documents. I need these documents to be timestamped and LTV-enabled. I followed the instructions and used the addLtv() method. I get a PDF with 2 signatures, which is...
View ArticleWhat does "Not LTV-enabled" mean?
I'm using iText to sign and timestamp PDF documents. It works very well. But I recently switched from Acrobat Pro X to XI and now I see this new line :the signature is not LTV enabled and will expire...
View ArticleInspect digital signatures
Files: GetN2fromSig.java/* This file is part of the iText (R) project. Copyright (c) 1998-2016 iText Group NV */ /** * Example written by Bruno Lowagie in answer to: *...
View ArticleRemove digital signatures
Files: FlattenSignature.java/* This file is part of the iText (R) project. Copyright (c) 1998-2016 iText Group NV */ /** * Example written by Bruno Lowagie in answer to the following question: *...
View ArticleAre PDF Signatures shattered?
Language EnglishLast week there was a huge buzz surrounding SHA-1. The hashing algorithm has been deemed unsafe for many years, but is still used in outdated software for digital signatures. Recently a...
View ArticleHow can I create a Reader enabled PDF that can be signed in Adobe Reader
Using iText, I've successfully created a document containing an empty signature field. Now I want to allow people to sign this document in Adobe Reader. I've read that I need to Reader enable my...
View ArticleiText guest blog about digital signatures on GlobalSign!
Language UndefinediText founder Bruno is featured over at GlobalSign with an interesting and extensive piece about electronic document signing. Starting from an issue caused by invoice fraud causing...
View ArticleHow can I create a Reader enabled PDF that can be signed in Adobe Reader
Using iText, I've successfully created a document containing an empty signature field. Now I want to allow people to sign this document in Adobe Reader. I've read that I need to Reader enable my...
View Article