Azure Infromation Proteccion error with digital signed pdf

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hello,

i have a pdf signed digital, and i want encript with azure information proteccion but i can´t.

[MikelKlink · Accepted solution]

Azure information protection supports encryption of PDFs as specified in the PDF specification and supported by the common PDF viewers. This kind of encryption, though, must be applied at the same time as any signature as the signature signs the encrypted PDF data.

Thus, encrypting after signing is not possible without breaking the signature. Sensible encryptors, therefore, do not allow encryption of signed PDFs.