CryptLib

CryptLib is a collection of cryptographic functions written in C. Each module is fully independent and requires only a single .c file and a a single .h file. The functions are designed to be portable, however they do require a Little-Endian processor.

This is fully public domain code. This means not only can you copy and use the code however you want, you can reformat it, remove headers or whatever you want. There is no need to acknowledge the source at all. Enjoy.