unsupported-security-handler

All codes

• Type: error
• Kind: unsupported (valid input that Lamina PDF doesn’t implement)

What happened

The document uses a security handler Lamina PDF can’t decrypt.

Why

Not /Standard, an unknown /V//R, or an unknown crypt filter method.

How to fix

Use a tool that supports the handler.

Example

trailer << /Encrypt << /Filter /Adobe.PubSec /SubFilter /adbe.pkcs7.s5 … >> >>

A public-key (certificate) handler: Lamina PDF implements only /Standard, so open fails. data.filter holds the handler’s name as read from the file.

Data fields

filter (untrusted: read from the file; the message never includes it), version, revision.