Cryptographic Library: Data Encryption Standard (DES)

A licensable developer's toolkit providing efficient cryptographic functions for integration into software applications to meet your individual data security requirements. The cryptographic algorithm employed is the Data Encryption Standard (DES) as defined by the US Bureau of Standards (FIPS PUB 46-2, 1993 and FIPS PUB 74, 1981). The software tools are designed for OEM use and are available for a wide range of target platform environments. Developers require no cryptographic background to incorporate privacy and authentication services into their applications. Suitable for a multitude of potential applications, e.g. electronic funds transfer, electronic banking, secure E-mail, disk and file encryption, network user authentication, secure software distribution, etc. Performance details are available here.

Consistent and simple-to-use 'C'-language API to the cryptographic routines.
Fully reentrant at the process and at the thread-level
Ultra-fast assembler implementations for Intel architectures
Support for ECB, CBC, 8-bit OFB, and 8-bit CFB operation mode. Tell me more ..
3DES encryption in EDE or EEE order using double-length (112-bit) or triple-length (168-bit) keys
Enclosed File Encryption utility
Performance Benchmark Program
NBS FIPS PUB 81, 1980 (DES modes of operation) test and certification program
Sample make files and source code examples
Free (no license fee) for private use
One-time fee for commercial license
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