Open secure pdf file free download
PDF lite is a free and open source PDF viewer and PDF printer. You can convert any document or image to a PDF file – doc to PDF and jpg to PDF. For example, Acrobat 7 cannot open a PDF encrypted for Acrobat X and later. Acrobat 6.0 And Later (PDF 1.5) encrypts the document using 128-bit RC4. Acrobat 7.0 And Later (PDF 1.6) encrypts the document using the AES encryption algorithm with a 128-bit key size.