Free botan software for linux

Botan is a C++ library implementing a variety of cryptographic algorithms and formats. At this time, it is quite stable, and is suitable for use in a wide variety of programs. Botans license makes it free for use as part of any commercial or free software without restriction.
It runs on most Unix/POSIX systems and Win32, and on many hardware platforms, including x86, x86-64, IA-64, PowerPC, SPARC, Alpha, MIPS, and ARM. See here for more information about portability.
The library proper is written in ISO C++, but there are optional modules which can be compiled into the library, providing features like zlib compression, high-resolution timers, and automatic entropy gathering.
Botan also has support for the crypto accellerators made by AEP Systems, and can easily be extended to support other hardware accellerators in the future.
It was originally written and is currently maintained by Jack Lloyd, though several others have contributed bug fixes, modules, and other help. Read doc/thanks.txt, included in the distribution, for a list of their names.
Whats New in 1.7.0 Development Release:
- DSA parameter generation has been changed to match the new system in FIPS 186-3.
- OIDs for the Rabin-Williams and Nyberg-Rueppel public key signature schemes have been added, so those keys can now be imported and exported using the same system used for RSA and DSA keys.
- In addition, those keys can be used in X.509 certificates.
- Portions of the API documentation have been reorganized and rewritten to help cover the most common tasks first.
Whats New in 1.6.3 Stable Release:
- A problem with building in debug mode on Visual Studio has been resolved.
- A race condition in the algorithm lookup cache that could cause memory corruption in multi-threaded application code has been fixed.
- All users of Botan in multi-threaded systems should upgrade to this release.

NetSieben SSH Library is a Secure Shell client software written in C++. NetSieben SSH Library utilizes Botan library for its cryptographic functions, allowing for a large choice of algorithms to be used in SSH communications.
As a developer you may wish to integrate SSH client functionality into your applications. You can now use the NetSiebens API, instead of spending countless hours developing your own solution.
The SSH library was created by the NetSieben developers who, after researching the limited number of options available to them from both commercial and open source communities, found these solutions limited and at best, still in early stages of development.
Enhancements:
- A fix for an error logging issue seen during authentication, more detailed authentication error messages, an easier error reporting interface, fixes for some debugging issues in the Windows port, and new code examples that reflect the changes to the error reporting interface.