Hi,
I just signed a PDF with a V1 and a V3 certificat.
The V1's certificate is successfully recognized and all informations appear, but with the V3, it say that the signature have been made by unknown.
When I try to valide the signature, I got this error:
Erreur d'authentification de la signature.
Erreur lors de la validation :
Erreur de chiffrement interne de la bibliothèque.
Code d'erreur: 0x2726
Sorry but it's in french, so this is a translation:
Error of signature authentification.
Error while validation :
Error of internal library encryption.
Error code: 0x2726
(I have the latest version of Adobe Acrobat Reader)