The com component will quickly tell you how many pages are in a pdf file without the need for acrobat, ideal for web sites that serve pdf content.
Example .asp, vb, .asp net, cold fusion, php & vc++ code included

AES Encryption library provides a simple interface to encrypt/decrypt files, strings or data from Visual Basic programs using 256-bit AES (Rijndael) encryption keys. Supports CBC and ECB mode, initialization vectors, and buffer padding. Win32/Win64.

File System Tiered Storage Filter Driver SDK, is a data storage technique which automatically moves data between high-cost and low-cost storage media.