How Do I Encrypt a Document in Adobe Acrobat

Open a file in Acrobat and choose “Tools” > “Protect.”Select whether you want to restrict editing with a password or encrypt the file with a certificate or password.Set password or security method as desired.Click “OK” and then click “Save.”

How do I add encryption to a PDF?

Add a password to Adobe Acrobat (pdf) Open the PDF and choose Tools > Protect > Encrypt > Encrypt with Password. If you receive a prompt, click Yes to change the security. Select Require a Password to Open the Document, then type the password in the corresponding field.

Is Adobe Acrobat encrypted?

Acrobat 7.0 And Later (PDF 1.6) encrypts the document using the AES encryption algorithm with a 128-bit key size. Acrobat X And Later (PDF 1.7) encrypts the document using 256-bit AES. To apply 256-bit AES encryption to documents created in Acrobat 8 and 9, select Acrobat X And Later.