The project proposes to develop a software library for symmetric cryptographic functions (block and stream ciphers, and cryptographic hash functions) aimed at a variety of lightweight processors commonly used to run embedded software such as ARM, AVR and PIC processors. Features to be paid particular attention to are reliability, power efficiency, compactness and speed. Availability of standard and high-quality implementations is to inspire more confidence in embedded software, ease integration and accelerate time-to-market where security plays a role.