CryptoPressStream is a streaming compression and encryption library.
It provides transparent access to compressed or encrypted data stored
in the stream object. All stream objects are 100% compatible with
TStream and have some advanced functionality such as progress event,
LoadFromStream, LoadFromFile, SaveToStream, SaveToFile methods, Lock
and Unlock methods for multi-thread usage. CryptoPressStream includes
TCPSManager thread-safe component that provides easy settings of
compression and encryption parameters, and contains a list of opened
streams.

CryptoPressStream contains TCPSManager visual component, Component
Reference, 7 demos, License Agreement in License.txt file, History Of
Changes in History.txt file and general information in ReadMe.txt file.

Key features:

- Transparent streaming compression and encryption library with 100% TStream compatibility.
- Forward and backward seeks to any position, partial rewriting of the stream, read cache.
- Support for large 64-bit streams (> 2 Gb).
- Compression and encryption component supporting buffers, strings, files.
- Compression algorithms ZLIB, BZIP and PPM.
- Strong customizable encryption with binary key support (12 algorithms and 4 modes):
Rijndael (AES) 128 and 256, Blowfish, Twofish 128 and 256, DES single, double and tripple, Square.
- TCPSManager component for compression and encryption settings, list of opened stream, memory leaks prevention.
- Native VCL, does not require any DLLs.
- Many Demos, Component Reference with Delphi and C++ prototypes.
- Royalty free.
- Full source code available.