Question: Is that anyway that i can signed pdf after set password?

[chayakornjj]

[Context]

• I want to use digital signature and pdf protected for invoice, Now that i can sign the digital signature or set the password of pdf only, I can't do both.

After research seem like it recommend me to set password first. after that before encrypt it need to sign it first..

[Question]

• Any one can give me an example or any idea?

Thanks

[MartinThoma]

Did you find an answer?