It was reverse engineered from the TSA made with Acrobat. Now you know why signatures are hard even with all the documentation.
Paulo ________________________________ From: Julien zitoune [mailto:[email protected]] Sent: Friday, May 28, 2010 10:23 AM To: itext Subject: [iText-questions] PDF signature Hi, I try to understand how you have developped your TSA request in order to make it by myself. I understood you need to hash 3 times the data (once without OCSP response, once with OCSP response, once with OCSP response and RSA encryted data) before encapsulating it in your TSA request and sending to the TSA server. I've read the Adobe PDF Signature specifications but they explain that nowhere. So how could you know that because it seems to work everytime but it is explained nowhere ? Is there anything else to know that is not written in the Adobe specifications ? Thanks you, Julien ________________________________ Hotmail : un service de messagerie gratuit, fiable et complet Profitez-en<https://signup.live.com/signup.aspx?id=60969> ________________________________ Hotmail : un service de messagerie gratuit, fiable et complet Profitez-en<https://signup.live.com/signup.aspx?id=60969> Aviso Legal: Esta mensagem é destinada exclusivamente ao destinatário. Pode conter informação confidencial ou legalmente protegida. A incorrecta transmissão desta mensagem não significa a perca de confidencialidade. Se esta mensagem for recebida por engano, por favor envie-a de volta para o remetente e apague-a do seu sistema de imediato. É proibido a qualquer pessoa que não o destinatário de usar, revelar ou distribuir qualquer parte desta mensagem. Disclaimer: This message is destined exclusively to the intended receiver. It may contain confidential or legally protected information. The incorrect transmission of this message does not mean the loss of its confidentiality. If this message is received by mistake, please send it back to the sender and delete it from your system immediately. It is forbidden to any person who is not the intended receiver to use, distribute or copy any part of this message.
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