# Qt Cryptographic Architecture (QCA) version 2.0.2

Date:
  April 24th, 2009
Mailing List
Project Lead/Maintainer (2003-current):
  (March 2007 - August 2007 under Barracuda Networks employment)
Development, Documentation, Unittests (2004-current)
Special Thanks:
  Portugal Telecom (SAPO division)
    for sponsorship
  Alon Bar-Lev
    for smart card and design assistance
  Jack Lloyd
    for Botan and X.509 mentoring
  L. Peter Deutsch
    for the public domain MD5 implementation
  Steve Reid
    for the public domain SHA1 implementation
  Jason Kim
    for the CMS Signer graphics

## Install

## License

## Changes

### New in 2.0.2

- Bugfix release, forward and backward compatible with 2.0.x
- Fix compatibility with Qt 4.5 when QCA::Initializer appears before QApp
- Do not convert to secure memory when Hash::update(QByteArray) is used
- Use configure.exe instead of configwin.bat

### New in 2.0.1

- Bugfix release, forward and backward compatible with 2.0.x
- Ability to build as a Mac framework (and build this way by default)
- On non-Mac Unix, the pkgconfig file is always qca2.pc, even in debug mode
- Certificates containing wildcards are now matched properly
- DirWatch/FileWatch now work
- Keystore writes now work
- Don't delete objects in their event handler (prevents Qt 4.4 warnings)
- Fix potential hang with TLS in server mode
- Windows version can be configured/installed using paths with spaces

## Description

QCA is a library that provides an easy API for a range of cryptographic features, including SSL/TLS, X.509 certificates, SASL, OpenPGP, smartcards, and much more.

Functionality is supplied via plugins. This is useful for avoiding dependence on a particular crypto library and makes upgrading easier, as there is no need to recompile your application when adding or upgrading a crypto plugin.

In order for QCA to be of much use, you will want to install some plugins.

QCA was originally created to support the security needs of the Psi XMPP/Jabber client project.

## API Documentation