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  • openSSL tutorial not fully working - Can sign but cannot restore original file

    - by djechelon
    I'm writing, and testing, a little tutorial for my groupmates involved in an openSSL homework. We have a bunch of PDF files, I'm the CA and each one should send me a signed PDF for me to be verified. I've told them to do the following (and tried to do it by myself) Request and obtain a certificate (I'll skip this part) Create a MIME message with the PDF file in it makemime -c "text/pdf" -a "Content-Disposition: attachment; filename=”Elaborato.pdf" Elaborato.pdf > Elaborato.pdf.msg Sign with openSSL openssl smime -sign -in Elaborato.pdf.msg -out Elaborato.pdf.p7m -certfile ca.pem -certfile nomegruppo.crt -inkey nomegruppo.key -signer nomegruppo.crt Verify with openssl smime -verify -in Elaborato.pdf.p7m -out Elaborato-verified.msg -CAfile ca.pem -signer nomegruppo.crt Extract attachment with munpack Elaborato-verified.msg View with Acrobat Reader The problem is that even if I get a file that (from its binary content) resembles a PDF file my current Ubuntu PDF viewer doesn't read it. The XXXElaborato.pdf extracted by munpack is a little bit smaller than the original. What's the problem with this procedure? In theory, they should send me the signed S/MIME message and I should be able to read the PDF within it. Why can't I restore the original content of the PDF file?

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  • running a parallel port controlling program through php.

    - by prateek
    I have a program that is interacting with hardware via parallel port programming. i had compiled it and using its object file to interact with the hardware (a simple led). when i execute it directly on the shell it serves the purpose of glowing the LED but when i execute it using shell_exec() in php the command is executed but unable to interact with the hardware. i am totally confused.. .

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  • Read/Write operation on Fat table with out using System.IO in C#

    - by AZHAR
    Hi i am new to the system programming...i want to read information from fat table like total sector,total physical drive,containing logical drive types and as well containing files in the drives(like their file size,when accessed)with all information of files..and then display of these files with respect of their hierarchy at GUI. this is easy if we use System.IO namespace.but it is restricted for me.so please help

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  • To PHP Namespace or not to PHP Namespace

    - by David
    ok, im relatively new to php programming and have been plodding along quite unaware that it is possible to actually use namespaces in php as I can in c# etc. Its really ugly though as they have decided to use backslashes - why! Anyway, I am interested in other php programmers views on whether namespaces will catch on in php and whether I should begin to use them now?

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  • Which .NET libraries do you use most ?

    - by Quandary
    Which .NET programming libaries do you use most ? I'm putting together a list, kind of "best of" SourceForge, CodePlex, Google Code, GitHub, etc. SourceForge.NET Nhibernate (database ORM) SharpZipLib (ZIP compression) itextsharp (PDF library) GitHub: JQuery (JavaScript) Google Code: aforge (imaging) Codeplex: Excel Data-Reader Other: bouncycastle.org (Encryption)

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  • Scalable Ticketing / Festival Website

    - by Luke Lowrey
    I've noticed major music festivals (at least in Australia) and other events that experience a peak in traffic when tickets go on sale have huge problems keeping their websites running well. I've seen a few different techniques used to try combat this such as short sessions and virtual queues but they dont seem to have much effect. If you were to design a website to sell a lot of tickets in a short amount of time how would you handle scalability? What technologies and programming techniques would you use?

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  • Books to help self-taught programmers.

    - by RHaguiuda
    As a self-taught programmer I find myself sometimes thinking how to improve my learning skills. Are there any books out there that you recommend, that help a self-taught learning aproach? When I ask about books here, please I`m not reffering about programming books, but something more like metacognition and the process of learning.

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  • Default Browser hangs (IE, Chrome)

    - by Craig Hinrichs
    IE was my default browser about three months ago when I started experiencing this issue. Intermittent hangs would occur when I would open a new main page or new tab to a site I know would be up. What I mean by a hang: The browser would open and say "Waiting for site " and do nothing more. If I closed the window and reopened it it would immediatly connect. Over time I would have to close and reopen the window to get to the page. This would happen to any page including Google. I finally got sick of it and started using chrome and I will never go back. I recently upgraded my anti-virus and now I am experiencing the same issue with Chrome. I use AVG for my antivirus. Empirically it seems if I don't make Chrome my default browser I don't experience the issue. I tested this theory for over two hours yesterday. Possible issues I have found this coudl be but not confirmed yet: MTU settings are not correct. I am infected but my antivirus has not caught it (unlikely but possible) ?? I would like to think this is related to my antivirus but I am unsure how to verify. I don't like the idea of killing my antivirus if #2 is a possibility. I am looking for tips on how I can trouble shoot possible issues. I am on Windows XP SP3 Thanks in advance.

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  • Good Administration Center Templates

    - by Alec Smart
    Hello, This may not be a programming question per se. But I am wondering what template do you use for your sites/webapps admin centers. Am looking primarily at free templates that give a basic structure. I know I can build my own, but I haven't had too much success in something that works for all my webapps/sites. Wondering if there is something nice and comprehensive available. Thank you for your time.

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  • Best approach for coding ?

    - by ahmed
    What should or how should I decide the best approach for coding as a smart programmer. I have just started programming last year in VB, and I keep on listening this statement. But I never could find by myself to choose the best approach for coding. When I search for a coding example on internet I find different types of approach to achieve the same target. So help me finding the best approach. (asp.net,vb.net)

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  • Classic assembly language texts not using x86?

    - by wrp
    I'm looking for texts that give detailed treatment of assembly programming principles and don't use x86 as the target architecture. I haven't found any recent books like that, but I would expect that there were some good ones written in the 1970s and 1980s, when whole applications were still written in assembly. The architecture used should also be one of the cleaner designs, such as the 6502 or VAX.

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  • Should BASIC continue to be recommended for non-programmers and beginners?

    - by Casey
    I just came across a new BASIC implementation for Google Android application called Simple. You can read about it here: http://google-opensource.blogspot.com/2009/07/programming-made-simple.html Clearly, a lot of time and effort has been recently put into enabling this functionality for Android. Should the software industry continue to encourage non-programmers into learning BASIC, or are modern languages like C#, Python, Ruby more appropriate at this time?

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  • do console apps run faster than windows based app?

    - by omair iqbal
    i am reletivly new to world of programming i have a few performance questions 1. do console apps run faster than windows based app? 2.are languages like c and pascal faster than object oriented languages like c++ and delphi?i know language speed depends more on compiler than on language itself but do compilers for prcedural languages like c and pascal produce faster code than oo ones like delphi,c++(including c++ compilers that can procuce c code) sorry for my bad english

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  • Handling User Authentication in .NET?

    - by Daniel
    I am new to .NET, and don't have much experience in programming. What is the standard way of handling user authentication in .NET in the following situation? In Process A, User inputs ID/Password Process A sends the ID/Password to Process B over a nonsecure public channel. Process B authenticates the user with the recieved ID/Password what are some of the standard cryptographic algorithms I can use in above model?

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  • Getting CoreMIDI to work in snow leopard with SimpleSynth

    - by suman-gurung
    I have been trying to follow the steps in the book Ruby Practical Project - making music with ruby and was trying to get CoreMIDI and output some notes using SimpleSynth. I can connect to the destination but when i do something like midi = LiveMIDI.new midi.note_on(0, 60, 100) I get no output from the sound system. Has anyone tried the code and faced similar situation?? And also What are the better libraries for music programming in Ruby?

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  • Autohotkey editor

    - by Kjensen
    What is the best editor for Autohotkey with regards to syntax hightlighting, command completion (intellisense), testing etc. I am doing a bit of Autohotkey programming, and being spoiled rotten by Visual Studio, I really miss these features - especially being new to the language/framework.

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