Specifies /V version value of security data.

Values:

IG_PDF_STD_SECURITY_VERSION_1	1	Version 1.
IG_PDF_STD_SECURITY_VERSION_2	2	Version 2.
IG_PDF_STD_SECURITY_VERSION_3	3	Version 3.
IG_PDF_STD_SECURITY_VERSION_4	4	Version 4. Crypt filter support.
IG_PDF_STD_SECURITY_VERSION_5	5	Version 5. New encryption method for Acrobat 9.0