KeySize

KeySize enumeration

Defines different key sizes which can be used to encrypt pdf documents.

Member name	Description
X40	40 bit key. Such key size is used with RC4 algorithm and provides low level of security. Nevertheless old versions of pdf documents can be encrypted only with such keys (v. 1.3 and lower);
X128	128 bit key. Both RC4 and AES algorithms can use such key size.
X256	256 bit key. Such key size can be used only with AES and is recognized with the last Adobe Reader versions (starting from v.9).