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M
maxmichels
Participant
January 14, 2022
Question

Acrobat DC Signature with Smartcard - Alogrithm

  • January 14, 2022
  • 1 reply
  • 5215 views

Hello,

 

we have ECC Smartcards to sign documents with qualified electronic signatures following the EU eIDAS Standard. Therefore the Smartcards were issued from Telesec PKS. The Smartcards are working, we have signed several files with other software.

 

When loading the required PKCS#11 modules we are able to see the certificate from the smartcard in Acrobat DC. But when we try to sign a file using this certificate we get the error that we are using an unsupported algorithm.

 

 

 

 

Does anyone know why we cannot sign documents with the smartcard? Following this page https://www.adobe.com/devnet-docs/acrobatetk/tools/DigSigDC/standards.html we should be able to use ECDSA elliptic curve P256 with digest algorithm SHA256 which i guess means SHA256 ECDSA.

 

Many thanks in advance
Max

 

1 reply

T
Thomas2312321424534
Participating Frequently
January 31, 2023

Hi Max, have you maybe found a solution in the meantime? Today, I received the same Telesec card, exactly with the algorith that is mentioned in your screenshots. I was happy to have figured out the PKCS#11 integration in Acrobat, but now I am stuck with the "not supported algorithm".

T
Thomas2312321424534
Participating Frequently
January 31, 2023

Addition: I have the latest Acrobat 2020 version (20.005.30436) on Windows 10 Pro (22H2), Build 19045.2486.

 

Signing PDF files with SecSigner (so without and outside of Adobe Acrobat) worked fine and the signatures can be successfully validated.

M
maxmichelsAuthor
Participant
January 31, 2023

Nope, i did not find any solution. I am using a different software now to sign the pdfs.

 

 

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