PDFArea PDF Encrypt 6.4 reviewDownload
Batch encrypt PDF documents
PDF Encrypt is a quick and easy-to-use PDF utility that is designed to batch encrypt PDF documents. It Supports 40-bit RC4, 128-bit RC4, 128-bit AES and 256-bit AES Encryption. You may set password and permissions (such as disallow printing, disallow copying etc.) to protect your PDF documents. If you encrypt a PDF document by setting the user password, no one can open the PDF document except he knows the correct password.