282 results found

1. It would be nice to be able to remove signatures so file could be used easily.

   It would be nice to be able to remove signatures so file could be used easily.

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2. Feature request Redact - please make it possible to use multiple replacement texts/images

   Redact - please make it possible to use multiple replacement texts or images

   I want to use a few of different replacement texts while redacting one document.
   I would be very usefull when each replacement text has an own icon in the tool bar. Each replacement text has an other color on the screen, before the redactions are applied.

   Now I have to save the document each time, when I need to change the replacement text for redaction.

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3. Changing the date format in digital signature

   Please add an option to modify the date format in the digital signature.

   I mean:
   - shortening the format from 2021.10.07 '00'02 + 07:29:00 to simply 2021.10.07,
   - possibility to edit the size of the date,
   - possibility to change the format to dd/mm/yyyy
   - possibility to change the separators to dd.mm.yyyy

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4. BUG: Acrobat DC misreported Invalid Signature

   I have encountered several cases of PDF documents in the past few years. When I signed the first signature, Acrobat DC verified the signature correctly, but when I added the second signature (even though the second signature was signed with Acrobat DC) , Acrobat DC will report that the previous signature is invalid, but I didn’t actually make any changes. Other PDF software (Acrobat 9.0 Pro/iText/Foxit) can verify these signatures correctly. I don't understand what causes the Acrobat DC verification to fail?

   In addition, I also encountered a "1 miscellaneous change(s)" problem in Case1.pdf

   Use the latest Windows 10 and Acrobat Pro DC v2021.007.20091 to reproduce this problem, and Acrobat Reader DC can also reproduce the problem.

   I have encountered several cases of PDF documents in the past few years. When I signed the first signature, Acrobat DC verified the signature correctly, but when I added the second signature (even though the second signature was signed with Acrobat DC) , Acrobat DC will report that the previous signature is invalid, but I didn’t actually make any changes. Other PDF software (Acrobat 9.0 Pro/iText/Foxit) can verify these signatures correctly. I don't understand what causes the Acrobat DC verification to fail?

   In addition, I also encountered a "1 miscellaneous change(s)" problem in Case1.pdf

   Use the latest Windows 10 and… more

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5. I can't create a password shorter than 6 digits

   Remove the 6-digit requirement for a password. I need to be able to do a 4-digit password. I tried the workaround in the registry but it's not working. I am not sure why Adobe feels the need to set this requirement when it's not their document that is being protected.

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6. Multiple documents digital sign at once

   Hi, I use adobe reader dc. Need to digital sign a lot of documents and for this a lot of time is wasted. Selecting each time a specified area and sign every docs. is there a short way to do so that all docs are sign at once. I used the actin wizard and tried it but it also same just some relief.

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7. Certificates & Digitally Signing

   The certificates do out-date, different from the business ones they expire in 1 to 2 years, so all signed document present very often "problems with the validation", you should change they way the errors are handle, since a not changed document, legally signed in the time period of the signature, is a complete different story from a changed document, or not valid signature.

   Once again all signed documents will have expired signature, and it does not really mean there is an issue, just a new signature.

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8. One time password option

   There should be multiple options to password protect a pdf, not just read/edit.

   When you make a pdf that is password protected, you have to make sure that whoever you are sending it to, understands how to enter the password, change the password and/or turn off the password. Not everyone uses Acrobat.

   To remove a password, you don't have to go into File > Properties and click the “Security” tab. Click the “Security Method” box, select “No Security”, and click “OK” to remove the password.

   Not everyone understands Acrobat. When you password protect a pdf, there should be an option to secure a pdf one time, or just to open. When the correct password is entered and the pdf opens, the password information is automatically deleted/removed. The next time you go to open the pdf there is no password. You can always turn it back on, if you know how, but this would be a simple protection if a pdf was sent via email, USB, cloud, …

   Not everyone knows and understands Acrobat.

   There should be multiple options to password protect a pdf, not just read/edit.

   When you make a pdf that is password protected, you have to make sure that whoever you are sending it to, understands how to enter the password, change the password and/or turn off the password. Not everyone uses Acrobat.

   To remove a password, you don't have to go into File > Properties and click the “Security” tab. Click the “Security Method” box, select “No Security”, and click “OK” to remove the password.

   Not everyone understands Acrobat. When you password protect a pdf, there should be an option… more

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9. Acrobat adds unusable OCSP to documents with long-term validation

   Due to OCSP caching, Acrobat most of the time adds stale OCSP to digitally signed documents with long-term validation (LTV)

   PAdES-LT and -LTA profiles require signature to include qualified timestamp and OCSP's thisUpdate time must be AFTER signature time as certified by qualified timestamp - otherwise OCSP can't be used for signature validation.

   Thus, when adding LTV data to signed documents, Acrobat should always check:

   1) whether the signature contains qualified timestamp
   2) whether OCSP's thisUpdate time is AFTER the timestamp time (it's not allowed to consider any clock skew here since qualified timestamp servers and OCSP responders should be synchronized to precise time source)

   Please note, that caching could occur not just in Acrobat, but also on OCSP servers, which can return responses with thisUpdate being in the past like this:

   Produced At: Dec 12 16:40:29 2020 GMT
   This Update: Dec 12 16:40:20 2020 GMT
   Next Update: Dec 12 16:50:20 2020 GMT

   Such OCSP can't be used to validate a signature created at Dec 12 16:40:28 2020 GMT!

   Due to OCSP caching, Acrobat most of the time adds stale OCSP to digitally signed documents with long-term validation (LTV)

   PAdES-LT and -LTA profiles require signature to include qualified timestamp and OCSP's thisUpdate time must be AFTER signature time as certified by qualified timestamp - otherwise OCSP can't be used for signature validation.

   Thus, when adding LTV data to signed documents, Acrobat should always check:

   1) whether the signature contains qualified timestamp
   2) whether OCSP's thisUpdate time is AFTER the timestamp time (it's not allowed to consider any clock skew here since qualified timestamp servers and OCSP responders should be… more

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10. PDF will redact or self-destruct after fixed time limit

    When sharing PDF files the file should have the built-in function that after a certain time-limit e.g. when information is out of date or to protect IP the contents redact or self-destruct.

    Pairing this with read-only, no download functionality will protect the content from being improperly used

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11. Adobe PAdES digital signature according to EU eIDAS regulation fails validation

    According to EU CEF eSignature Building Block expertise - CAdES/PAdES digital signature created with latest Adobe Acrobat DC has invalid encoding and not valid signatures, that can't be validate via https://ec.europa.eu/cefdigital/DSS/webapp-demo/validation
    source code https://github.com/esig/dss

    More tech details and sample here - https://ec.europa.eu/cefdigital/tracker/browse/DSS-2191

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12. Signatures can not be verified (BUG)

    We are currently experiencing a problematic issue concerning validating signatures in PDF files created with Adobe PRO. We are using a third party platform that places the signatures (3 signers) and its audittrail into the PDF with a Hash. All signings are placed succesfully but after i download the file again it will not validate the signatures because the file has been changed according to Adobe. This, however, is not the case and Foxit PDF does succesfully validate the signatures. After some research we have learned that Adobe registers a change between the placing the last signature and the time stamp. This is one single action so this is simply not possible. We have contacted our PDF rendering company and they have discovered that this is most likely a bug in your software or it is expecting different and or more information in the hash file. We however can not find what that is. This issue has emerged since your most rescent Adobe PRO release.This problem does not occur when we print a file (docx. for example) to PDF. This issue ONLY happens when we use Adobe PRO and not when we use Acrobat Reader.

    We are currently experiencing a problematic issue concerning validating signatures in PDF files created with Adobe PRO. We are using a third party platform that places the signatures (3 signers) and its audittrail into the PDF with a Hash. All signings are placed succesfully but after i download the file again it will not validate the signatures because the file has been changed according to Adobe. This, however, is not the case and Foxit PDF does succesfully validate the signatures. After some research we have learned that Adobe registers a change between the placing the last signature and the time… more

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13. Cannot digitally sign

    I having trouble with digitally signing documents. I use this all the time. Last week, after the MS 10 update, I get to the signature popup, hit the "sign" button, and nothing happens.

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14. ADOBE SIGN AVAILABILITY TO CHANGE INK COLOR FOR DIGITAL SIGNATURE

    It is not possible to change the by default black color for signature in ADOBE SIGN (see customer service chat attached)

    This is a strong requisite in some countries. If this can not be met we will need to move to other signature software that allows this option.

    I see this option is already available in Adobe Reader Fill and Sign for IOS so PLEASE include this option for ADOBE SIGN since it looks like an easy fix.

    If this is not possible please provide the reason to try to understand the limitation.

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15. Password recovery for document creator

    The creator of a document can edit a password protected PDF by using their regular account password. Or perhaps there is a recovery system for a forgotten password, like email, text, questions, etc.

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16. Delete the requirement to login to Acrobat

    I was unable to view a document during a conference call because you required a login for the first time in over a year. Acrobat let me down when I needed it. How can I trust your software now? Please don't tell me it's for my security. It's just Big Brother wanting to maintain control. Please delete the login.

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17. Protection from editing is overridden in other PDF editors

    The protection for editing does not work at all under mac Os and the popular PDF editor "PDF Expert". With preview the PDF`s cannot be edited, but with PDF-Expert it is possible without any password. A joke! Such "security" is completely useless.
    Acrobat DC latest. macOS 10.14.6

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18. [Bug] Adobe Acrobat/Reader changes font object when doing a signature which invalidates previous signature

    We just notcied a strange behavior of Acrobat/Adobe Reader (DC 2019.021.20056) and found the root cause:

    There's a generated PDF that uses standard fonts which are referenced through the AcroForm default resources entry, too. Strangely the font has a Name entry in its dictionary:

    3 0 obj
    <</Type/Font/Subtype/Type1/BaseFont/Helvetica/Name/F1/Encoding/WinAnsiEncoding>>
    endobj

    We add 2 signature fields with our own tool and certify/sign one field. This results in a valid document, which you can download here (https://customers.setasign.com/adobe/document-with-name-in-font.pdf). Do not wonder, there's really only a single line on the page.

    When you open this document in Adobe Acrobat or Reader and sign the left field the new signature is fine but the previous one is invalid because of changes which were not allowed. The resulting document is available here (https://customers.setasign.com/adobe/document-with-name-in-font-signed.pdf).

    We tracked it down that Adobe Acrobat/Reader simply removes the Name entry from the font dictionary which invalidates the first signature:

    3 0 obj
    <</BaseFont/Helvetica/Encoding/WinAnsiEncoding/Subtype/Type1/Type/Font>>
    endobj

    If we remove the Name key before we add the signature fields and the first signature everything runs without any issue.

    So from my point of view this seems to be a bug in Acrobat, or? Not to say that the generation library should omit the Name entry, too.

    We just notcied a strange behavior of Acrobat/Adobe Reader (DC 2019.021.20056) and found the root cause:

    There's a generated PDF that uses standard fonts which are referenced through the AcroForm default resources entry, too. Strangely the font has a Name entry in its dictionary:

    3 0 obj
    <</Type/Font/Subtype/Type1/BaseFont/Helvetica/Name/F1/Encoding/WinAnsiEncoding>>
    endobj

    We add 2 signature fields with our own tool and certify/sign one field. This results in a valid document, which you can download here (https://customers.setasign.com/adobe/document-with-name-in-font.pdf). Do not wonder, there's really only a single line on the page.

    When you open this document in Adobe Acrobat or Reader and sign… more

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19. ZIP files, save them to my PC

    I have a need to download/save zip files from PDF portfolio to my PC.
    I use the portfolio to make mails arkives. some mails have Zip files attached, thes then become attached in the PDF portfolio. When browsing trough the arkive, i find my self in need to save the zip files to the PC.

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20. Customize Quick Tools - Protect, Encrypt

    Under customizing quick tools, I've added the protect -> Encrypt item to quick tools. When launching a new PDF I can easily click the padlock and choose 2. encrypt with password on my PDFs.

    However, if you go to Edit then Preferences, under the general category, uncheck 'Open documents as new tabs in the same window (requires relaunch)'. Close and reopen any PDF, I can no longer choose 2. encrypt with password. Can you please fix this bug

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