Does PdfEdit support AES256 encryption and which encryption to use? Print

PDFEdit supports all encryption algorithms defined by official PDF reference manual.

Supported encryption algorithms are: RC4 40 bit, RC4 custom length key length, RC4 128 bit, AES 128 bit, AES 256 bit - weak type (not recommended!), AES 256 bit - strong type

AES 256 bit is the most secure encryption, but not all PDF readers aren't yet able to use it. For good security and compatibility, we suggest AES 128 bit.