Highlighted

Acrobat Reader DC problem with PDF signatures

New Here ,
May 26, 2020

Copy link to clipboard

Copied

Hi! Our company ran into a problem with Adobe Acrobat Reader DC (in the following: Reader). If we digitally sign a fillable PDF document with our software, Reader validates it successfully. But then if we create a second signature with Reader, our first signature becomes invalid and Reader tells us that the signed content changed - although our first signed revision does not have one bit change! We would like to know what does the signature policy of Adobe contain for this specific case - how can a valid signature become invalid with modifications only AFTER the signed revision? We only ran into this problem with a few fillable PDF documents, otherwise everything works as it should be.

Topics

Security digital signatures and esignatures

Views

147

Likes

Translate

Translate

Report

Report
Community Guidelines
Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more

Acrobat Reader DC problem with PDF signatures

New Here ,
May 26, 2020

Copy link to clipboard

Copied

Hi! Our company ran into a problem with Adobe Acrobat Reader DC (in the following: Reader). If we digitally sign a fillable PDF document with our software, Reader validates it successfully. But then if we create a second signature with Reader, our first signature becomes invalid and Reader tells us that the signed content changed - although our first signed revision does not have one bit change! We would like to know what does the signature policy of Adobe contain for this specific case - how can a valid signature become invalid with modifications only AFTER the signed revision? We only ran into this problem with a few fillable PDF documents, otherwise everything works as it should be.

Topics

Security digital signatures and esignatures

Views

148

Likes

Translate

Translate

Report

Report
Community Guidelines
Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more
May 26, 2020 0
Most Valuable Participant ,
May 26, 2020

Copy link to clipboard

Copied

Are you using Signature fields to sign the file? If not, then what?

Likes

Translate

Translate

Report

Report
Community Guidelines
Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more
Reply
Loading...
May 26, 2020 0
Clairou LATEST
New Here ,
May 26, 2020

Copy link to clipboard

Copied

Thank you for your response! What do you mean by "using Signature fields"? We create a certificate-based digital signature with another software first, and then, create an also certificate-based digital signature with Reader (Certificates/Digitally Sign).

Likes

Translate

Translate

Report

Report
Community Guidelines
Be kind and respectful, give credit to the original source of content, and search for duplicates before posting. Learn more
Reply
Loading...
May 26, 2020 0