Acrobat (Reader) 8 not able to open AES-256 protection PDF rights management?

Is this really true?

Have not found a sheet explaining the requirements of Client-side, when

PDF documencs with LCRM AES-256 encryption.

In my lab, apparently, as if Reader-9 may open the thin documents, while Reader-8 fails to decrypt.

Dilettanto

Acrobat/Reader 9 was the first version to incorporate AES-256 code, so if you want to stay compatible with Reader 7 or 8 you must continue to use AES - 128. I think that's documented in help for the section that describes how the publishing strategy works.

Jonathan

Tags: Adobe LiveCycle

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