[iText-questions] pdf decryption using user password
Hello, In itext, can we decrypt a pdf file using the user password that was used to encrypt the file? I know decryption can be done using owner password. What I want to achieve is: In my web application, keep pdf files in encrypted form. When the authorized user requests for a pdf file, then depending on the permissions (user's role), I send them a file with appropriate permissions - ALLOW_PRINTING, ALLOW_COPY etc. What I am doing right now is I encrypt a file using OWNER and USER passwords and then decrypt it using OWNER password but then that file allows all actions - print, copy etc. thanks, deep -- View this message in context: http://itext-general.2136553.n4.nabble.com/pdf-decryption-using-user-password-tp3031879p3031879.html Sent from the iText - General mailing list archive at Nabble.com. -- The Next 800 Companies to Lead America's Growth: New Video Whitepaper David G. Thomson, author of the best-selling book Blueprint to a Billion shares his insights and actions to help propel your business during the next growth cycle. Listen Now! http://p.sf.net/sfu/SAP-dev2dev ___ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
[iText-questions] iTextSharp Library Question
Good morning, I am currently developing an application for the company where I work, where I need to edit PDF documents. iTextSharp library seems to achieve the desired results. This project is built and designed only to be used by the company as internal project. My question is if in this case is considered personal use or is already considered commercial use? Regards, Marco Rodrigues Applications Programmer Atrium Saldanha Praça Duque de Saldanha, 1 – 10º E 1050-094 Lisboa Tel.: + 351 21 330 10 20 Fax: + 351 21 330 10 21 everis.com melhor consultora melhor empresa para executivos 4ª melhor empresa para trabalhar AVISO DE CONFIDENCIALIDADE. Esta mensagem e os seus conteúdos ou anexos são privados e confidenciais e dirigidos exclusivamente ao seu destinatário. A everis informa a quem possa ter recebido esta mensagem por engano, que a mesma contém informação confidencial, cujo uso, cópia, reprodução ou distribuição é expressamente proibido. Caso não seja o destinatário desta mensagem, pedimos-lhe que informe o remetente, o mais breve possível, e a elimine sem ler, copiar, duplicar, imprimir ou fazer qualquer outro uso do seu conteúdo. CONFIDENTIALITY WARNING. This message and the information contained in or attached to it are private and confidential and intended exclusively for the addressee. everis informs to whom it may receive it in error that it contains privileged information and its use, copy, reproduction or distribution is prohibited. If you are not an intended recipient of this E-mail, please notify the sender, delete it and do not read, act upon, print, disclose, copy, retain or redistribute any portion of this E-mail. image/gifimage/gif-- The Next 800 Companies to Lead America's Growth: New Video Whitepaper David G. Thomson, author of the best-selling book Blueprint to a Billion shares his insights and actions to help propel your business during the next growth cycle. Listen Now! http://p.sf.net/sfu/SAP-dev2dev___ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
Re: [iText-questions] pdf decryption using user password
On 8/11/2010 13:28, dgiscool wrote: Hello, In itext, can we decrypt a pdf file using the user password that was used to encrypt the file? Technically, you can decrypt a password-protected PDF without knowing any password, but iText deliberately disallows decrypting the PDF if you don't have the owner password. -- This answer is provided by 1T3XT BVBA http://www.1t3xt.com/ - http://www.1t3xt.info -- The Next 800 Companies to Lead America's Growth: New Video Whitepaper David G. Thomson, author of the best-selling book Blueprint to a Billion shares his insights and actions to help propel your business during the next growth cycle. Listen Now! http://p.sf.net/sfu/SAP-dev2dev ___ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
[iText-questions] Use library for set sucerity in the especific content on the pdf
Hi, I need information, about, if i used this library for configure security in the especific content in he pdf, for example: I have a pdf with 10 pages, and i want set that especific user can't see the content of the page 5. Can I do this library? Regards, Marielina Munoz -- The Next 800 Companies to Lead America's Growth: New Video Whitepaper David G. Thomson, author of the best-selling book Blueprint to a Billion shares his insights and actions to help propel your business during the next growth cycle. Listen Now! http://p.sf.net/sfu/SAP-dev2dev___ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
Re: [iText-questions] Use library for set sucerity in the especific content on the pdf
Selective encryption of page ranges is not part of the PDF standard. It requires the use of enterprise-level DRM solutions such as Adobe's own LiveCycle Rights Management. From: Marie Diaz [mailto:muno...@hotmail.com] Sent: Monday, November 08, 2010 12:16 PM To: itext-questions@lists.sourceforge.net Subject: [iText-questions] Use library for set sucerity in the especific content on the pdf Hi, I need information, about, if i used this library for configure security in the especific content in he pdf, for example: I have a pdf with 10 pages, and i want set that especific user can't see the content of the page 5. Can I do this library? Regards, Marielina Munoz -- The Next 800 Companies to Lead America's Growth: New Video Whitepaper David G. Thomson, author of the best-selling book Blueprint to a Billion shares his insights and actions to help propel your business during the next growth cycle. Listen Now! http://p.sf.net/sfu/SAP-dev2dev___ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
[iText-questions] Font issue
Hello, I am using Pentaho which in turn uses jFreeChart and itext to display charts. I have installed my Pentaho solution on several CentOS platforms with no problem. However, when I tried to install my solution on a Red Hat Linux system my jFreeChart is not rendering properly. Can anyone point me to what may be missing in the Red Hat environment. Screen shot below that illustrate problem. JFreeChart on CentOS system...correct: JFreeChart on Red Hat system..fonts are superscript (raised) and non-readable. Thanks, Bill image001.jpgimage002.jpg-- The Next 800 Companies to Lead America's Growth: New Video Whitepaper David G. Thomson, author of the best-selling book Blueprint to a Billion shares his insights and actions to help propel your business during the next growth cycle. Listen Now! http://p.sf.net/sfu/SAP-dev2dev___ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
Re: [iText-questions] Font issue
On 8/11/2010 23:22, Bill Bolek wrote: Hello, I am using Pentaho which in turn uses jFreeChart and itext to display charts. I have installed my Pentaho solution on several CentOS platforms with no problem. However, when I tried to install my solution on a Red Hat Linux system my jFreeChart is not rendering properly. Can anyone point me to what may be missing in the Red Hat environment. Screen shot below that illustrate problem. Professional reaction: don't ask us, ask Pentaho, because Pentaho doesn't have a business relationship with iText Software Corp. and Pentaho has far more resources to help you. Developer's reaction: I'm 99% sure that Pentaho/jFreeChart uses PdfGraphics2D to render the PDF (as opposed to using native PDF instructions, such as lineTo, moveTo, fill, stroke,...). This means that your application depends on plenty of java.awt classes, and if you're using a JVM different from the one from SUN (now Oracle), then you may experience quirks that are inherent to that other JVM. I didn't see this kind of behavior yet, but I've experienced similar problems in the AWT area with JDKs that were not from SUN. -- This answer is provided by 1T3XT BVBA http://www.1t3xt.com/ - http://www.1t3xt.info -- The Next 800 Companies to Lead America's Growth: New Video Whitepaper David G. Thomson, author of the best-selling book Blueprint to a Billion shares his insights and actions to help propel your business during the next growth cycle. Listen Now! http://p.sf.net/sfu/SAP-dev2dev ___ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
Re: [iText-questions] tutorials
On 9/11/2010 8:30, George Pearson wrote: Is it possible to find any good itext tutorials out there? No tutorial will teach you as much as the brand new second edition of iText in Action: http://itextpdf.com/book/ All other tutorials were removed because they were hopelessly outdated. -- This answer is provided by 1T3XT BVBA http://www.1t3xt.com/ - http://www.1t3xt.info -- The Next 800 Companies to Lead America's Growth: New Video Whitepaper David G. Thomson, author of the best-selling book Blueprint to a Billion shares his insights and actions to help propel your business during the next growth cycle. Listen Now! http://p.sf.net/sfu/SAP-dev2dev ___ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
Re: [iText-questions] pdf decryption using user password
Hello, As a security guy I following your iText-trail concerning, because of a specific interest in PDF Signature (CAdES, PAdES, etc). I read that you say that it is technical possible to decrypt a password-protected PDF without knowning any passwords. How is this possible ? I haven't investigated the PDF standard concerning encryption, but this statement realy scares me. Greetings, DDT 2010/11/8 1T3XT info i...@1t3xt.info On 8/11/2010 13:28, dgiscool wrote: Hello, In itext, can we decrypt a pdf file using the user password that was used to encrypt the file? Technically, you can decrypt a password-protected PDF without knowing any password, but iText deliberately disallows decrypting the PDF if you don't have the owner password. -- This answer is provided by 1T3XT BVBA http://www.1t3xt.com/ - http://www.1t3xt.info -- The Next 800 Companies to Lead America's Growth: New Video Whitepaper David G. Thomson, author of the best-selling book Blueprint to a Billion shares his insights and actions to help propel your business during the next growth cycle. Listen Now! http://p.sf.net/sfu/SAP-dev2dev ___ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php -- The Next 800 Companies to Lead America's Growth: New Video Whitepaper David G. Thomson, author of the best-selling book Blueprint to a Billion shares his insights and actions to help propel your business during the next growth cycle. Listen Now! http://p.sf.net/sfu/SAP-dev2dev___ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
Re: [iText-questions] tutorials
Hello, you've answered off-list. Please stay on the list: itext-questions@lists.sourceforge.net Do not mail to other e-mail addresses. On 9/11/2010 8:44, George Pearson wrote: That's great and will definitely look into it, but being in this country shipping a book like that could take a few weeks, and I don't really have that time. The eBook is available almost immediately, so that's not a valid excuse. I do have a project that I need completed can I ask you perhaps for help? If you're looking to pay for consultancy, please use the consultancy address: consulta...@itextpdf.com Explain your requirements and you'll get an offer with a quote. -- This answer is provided by 1T3XT BVBA http://www.1t3xt.com/ - http://www.1t3xt.info -- The Next 800 Companies to Lead America's Growth: New Video Whitepaper David G. Thomson, author of the best-selling book Blueprint to a Billion shares his insights and actions to help propel your business during the next growth cycle. Listen Now! http://p.sf.net/sfu/SAP-dev2dev ___ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
Re: [iText-questions] pdf decryption using user password
On 9/11/2010 8:47, DDT wrote: Hello, As a security guy I following your iText-trail concerning, because of a specific interest in PDF Signature (CAdES, PAdES, etc). I read that you say that it is technical possible to decrypt a password-protected PDF without knowning any passwords. How is this possible ? I haven't investigated the PDF standard concerning encryption, but this statement realy scares me. I assumed that this was a public secret. http://en.wikipedia.org/wiki/United_States_v._ElcomSoft_and_Sklyarov -- This answer is provided by 1T3XT BVBA http://www.1t3xt.com/ - http://www.1t3xt.info -- The Next 800 Companies to Lead America's Growth: New Video Whitepaper David G. Thomson, author of the best-selling book Blueprint to a Billion shares his insights and actions to help propel your business during the next growth cycle. Listen Now! http://p.sf.net/sfu/SAP-dev2dev ___ iText-questions mailing list iText-questions@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/itext-questions Many questions posted to this list can (and will) be answered with a reference to the iText book: http://www.itextpdf.com/book/ Please check the keywords list before you ask for examples: http://itextpdf.com/themes/keywords.php
