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Encryption of signed documents “breaks” the existing signature

If a PDF document already has an internal signature, it is no longer possible to encrypt it using a password.
To effectively secure a document with a password, all of the payload it contains must be encrypted. This process inevitably compromises existing signatures.

As the first long-term storage solution available on the market, the proNEXT Archive Manager from the procilon GROUP has received the TR-ESOR certificate from the BSI according to the new version...