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From Глеб Г.Г. <dartty...@gmail.com>
Subject Re: HOW-TO Question: Signing pdf document, that is already been signed.
Date Sat, 23 Jan 2016 17:08:38 GMT
Sorry for botherting you, it was my faulty code after all.

2016-01-23 20:02 GMT+03:00 Tilman Hausherr <THausherr@t-online.de>:

> Am 23.01.2016 um 17:44 schrieb Глеб Г.Г.:
>
>> Hello again! RC3 version works for previously signtd and encrypted files
>> if
>> I ommit encryption part in code.
>> I encrypt my files with code  I've shown you in JIRA thread PDFBOX-2729.
>> But it fails to encrypt new files. Same code works on RC2 but gives me
>> NullPointerException on RC3 in
>> saveIncremental() call.
>>
>
> Could you post your code and mention to what file it applies?
>
> You're not assumed to encrypt a file that has already been signed. This
> doesn't make sense, it wouldn't be the same file. You first encrypt, then
> you sign, and maybe sign again.
>
> Tilman
>
>
>
> Back then you said my code is faulty because one should not save and load
>> file before applying signature. But how should I do it then?
>>
>> 2016-01-23 13:16 GMT+03:00 Глеб Г.Г. <darttyler@gmail.com>:
>>
>> RC3 version works as you suggested. Thank you and whole team for great
>>> work.
>>>
>>> 2016-01-19 22:52 GMT+03:00 Глеб Г.Г. <darttyler@gmail.com>:
>>>
>>> Thank you, I'll will update my libraries to rc3
>>>>
>>>> 2016-01-19 21:23 GMT+04:00 Tilman Hausherr <THausherr@t-online.de>:
>>>>
>>>> Am 19.01.2016 um 17:59 schrieb Глеб Г.Г.:
>>>>>
>>>>> Dear mr. Hausherr!
>>>>>>
>>>>>> You've posted a comment, that my solution is incorrect, because I
>>>>>> change
>>>>>> and save initial encrypted PDF file before signing.
>>>>>> Can you please provide some sample code how should I do it right
way?
>>>>>>
>>>>>> Well, after the change (which is in 2.0 RC3), you can simply sign
the
>>>>> files as shown in the CreateVisibleSignature.java example. That is
>>>>> what I
>>>>> used for the attached files. It will take the unmodified source file
>>>>> and
>>>>> append the signature stuff.
>>>>>
>>>>> Tilman
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> 2015-12-21 23:12 GMT+03:00 Глеб Г.Г. <darttyler@gmail.com>:
>>>>>>
>>>>>> I've posted comment on PDFBOX-2729 with my pdf's
>>>>>>
>>>>>>> 2015-12-21 23:56 GMT+04:00 Глеб Г.Г. <darttyler@gmail.com>:
>>>>>>>
>>>>>>> I've posted my answer to stackoverflow. Files and passwords are
>>>>>>>
>>>>>>>> irrelevant in this case.
>>>>>>>>
>>>>>>>> 2015-12-21 23:21 GMT+04:00 Tilman Hausherr <THausherr@t-online.de>:
>>>>>>>>
>>>>>>>> Am 21.12.2015 um 20:17 schrieb Глеб Г.Г.:
>>>>>>>>
>>>>>>>>> In my case I protect and then sign. This works on one
signature,
>>>>>>>>> but
>>>>>>>>>
>>>>>>>>>> fail
>>>>>>>>>> on two. Looks like firs signature gets destroyed
in process.
>>>>>>>>>>
>>>>>>>>>> I'm surprised it even works with the first signature.
Feel free to
>>>>>>>>>>
>>>>>>>>> submit your code to PDFBOX-2729, including a PDF preferably
in all
>>>>>>>>> its
>>>>>>>>> steps. Don't forget the password(s).
>>>>>>>>>
>>>>>>>>> Tilman
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> 2015-12-21 22:11 GMT+03:00 Tilman Hausherr <THausherr@t-online.de
>>>>>>>>> >:
>>>>>>>>>
>>>>>>>>>> Hi,
>>>>>>>>>>
>>>>>>>>>> Protect after signing - don't know how without destroying
the
>>>>>>>>>>> signature(s)
>>>>>>>>>>> validity; sign after protect - not yet:
>>>>>>>>>>> https://issues.apache.org/jira/browse/PDFBOX-2729
>>>>>>>>>>>
>>>>>>>>>>> Tilman
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Am 21.12.2015 um 20:06 schrieb Глеб Г.Г.:
>>>>>>>>>>>
>>>>>>>>>>> By the way, is it even possible to protect with
password a
>>>>>>>>>>> document
>>>>>>>>>>>
>>>>>>>>>>> that
>>>>>>>>>>>> is
>>>>>>>>>>>> signed twice?
>>>>>>>>>>>>
>>>>>>>>>>>> 2015-12-21 22:01 GMT+03:00 Глеб Г.Г.
<darttyler@gmail.com>:
>>>>>>>>>>>>
>>>>>>>>>>>> Aw, forgive me big time! It was mine piece
of code that created
>>>>>>>>>>>> the
>>>>>>>>>>>> issue.
>>>>>>>>>>>>
>>>>>>>>>>>> I was protecting document with password and
this somehow messed
>>>>>>>>>>>>
>>>>>>>>>>>>> thing up,
>>>>>>>>>>>>> even if I left passwords blank.
>>>>>>>>>>>>>
>>>>>>>>>>>>> 2015-12-21 21:45 GMT+03:00 Tilman Hausherr
<
>>>>>>>>>>>>> THausherr@t-online.de>:
>>>>>>>>>>>>>
>>>>>>>>>>>>> Am 21.12.2015 um 19:43 schrieb Глеб
Г.Г.:
>>>>>>>>>>>>>
>>>>>>>>>>>>> Or do I need to set specific
>>>>>>>>>>>>>
>>>>>>>>>>>>>> reopsitory?
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> Ooops, yes, indeed:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> https://pdfbox.apache.org/2.0/getting-started.html
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> |<repository> <id>ApacheSnapshot</id>
<name>Apache
>>>>>>>>>>>>>> Repository</name>
>>>>>>>>>>>>>> <url>
>>>>>>>>>>>>>> https://repository.apache.org/content/groups/snapshots/</url>
>>>>>>>>>>>>>> <snapshots> <enabled>true</enabled>
</snapshots>
>>>>>>>>>>>>>> </repository>|
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
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>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
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>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
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>>>>>
>>>>>
>
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